Maplin Magazine Index

XU87U Issue 4

E N I Z A G A M N I L P A M E H T

INDEX – VOLUMES 1 to 15, NUMBERS 1 to 106

CON TEN TS ............................ ............................. ............................. ............................ .................. .... 1 A GUIDE TO MAINS SAFETY .............. ............................. ............................. .................... ...... 1 A GUIDE TO PROFESSIONAL AUDIO.............. AUDIO ............................ ........................... ............................ ............................. ............................. .................. .... 1 ART OF EL ELEECTRO TRONIC NIC MUSIC MUSIC............. ............................ .............11 AUDIO FREQUENCY INDUCTION LOOP SYSTEMS.............. SYSTEMS ............................. ............................ ............................. ............................ ............. 1 AUDIO IC POWER AMPLIFIER CIRCUITS .............. ........................... ............................. ............................. ............................ ............................. ................. 1 BOBS MINI CIRCUITS ............. ........................... ............................ ............................. ..................... ...... 2 CALCS – Calculations in Electronics ............. ............................ ............................ ............................. ................. 2 CIRCUIT MAKER (READERS CIRCUITS) .............. ............................. ............................ ............................. ..................... ...... 2 COMPUTERS IN THE REAL WORLD ............... ............................. ............................. ............................ .................. .... 2 DATA FILE (APPLICATION CIRCUITS) .............. ............................. ............................ .............22 DESIGN & APPLICATION OF SEQUENTIAL LOGIC .............. ............................ ............................ .............22 DESIGNING DESIG NING & BUILDING BUILDING SUBWOO SUBWOOFER FER SYSTE SYSTEMS MS ............. ............................ ............................ ............................. ................. 2 DISCOVERING SATELLITE TELEVISION .............. ..........................33 ELECTRONIC CHRONICLES – A Brief History of Electronics .......................... ........................... ............................ ............................. ............................ ............. 3 ELECTRONICS ELE CTRONICS BY EXPERIMENT ............. ............................ ............................ ............................. ............................ ............. 3 ELECTRONIC ELE CTRONIC FILTER CIRCUITS .............. ............................. ............................ ............................. ............................. .................. .... 3 ELECTRONICS ELE CTRONICS IN AVIATION ............... ........................... ............................ ....................... ......... 3 EMC - ELECTROMAGNETIC COMPATIBILITY ............. ............................. ............................ ............................. ............................. ............................ .................. 3 EXPLORING RADIO ............... ........................... ............................ ............................. ............................. ......................... ........... 3 FEA FE ATU TURE RESS Ast stro rono nomy my............. ............................ ............................ ............................. ............................. ............................ .................. .... 3 Audio .............. ............................. ............................ .................. .... 3 Automotive Electronics.............. Electronics ............................. ............................. ............................ ....................... ......... 3 Aviation Electronics.............. Electronics ............................. ............................ ............................. ............................. ............................ .................. .... 3 Circuit Design .............. ........................... ............................. ..................... ...... 3 Components, Component s, Ac Active tive & Passive ............. ............................ ............................. ............................ ............. 4 Computer/Microprocessor.............. Computer/Microprocessor ............................ ............................. ............................. .................... ...... 4 Computer Networking .............. ............................ ............................. ............................. ............................ ............................. ................. 4 Control.............. Control ............................. ............................. ............................ ....................... ......... 4 Fibre Optic & Laser .............. ............................. ............................. ............................ ............................. ............................ ............. 5 General .............. ............................ ............................. ............................. .................. .... 5 Logic Circuits............... Circuits ............................. ............................ ............................. ............................. ............................ .................. .... 5 Model Cont Control rol .............. ............................. ............................. ............................ ............................. ............................ ............. 6 Musical .............. ............................ ............................. ......................... ........... 6 Power Supplies & Batteries ............. ........................... ............................. ............................. .................. .... 6 Radio Communications ............. ............................ ............................. ............................ ............................. ............................ ............. 6 Robotics ............. ........................... ............................. ............................. ......................... ........... 6 Security/Protection ............. ............................. ............................ ............................. ..................... ...... 6 Telecommunications ............... ............................ ............................. ............................. .................... ...... 6 Test & Measurement .............. ............................ ............................. ............................. ............................. .................... ...... 6 The Internet ............. ............................. ............................. ............................ ....................... ......... 6 Video & TV.............. TV ............................ ............................. ............................ ............................. ............................. ............................. ............................. .................... ...... 7 FILTERS............... FILTERS ............................. ............................ ............................. ............................. ......................... ........... 7 FINISHING OFF............. OFF ............................ ......................... ...........77 FIRST BASE – A Beginners Guide to Logic Design............... Design ............................. ............................. ............................ ............................. ................. 7 GETTING TO KNOW TEST EQUIPMENT ............... ........................... ............................. ............................. ......................... ........... 7 GUIDE GU IDE TO TO MODE MODERN RN DIG DIGITA ITALL IC ICss ............. .....................................77 HEARING DEAFNESS & ELECTRONIC TECHNOLOGY ..................................... ............................ .............77 HELLO WHO’S CALLING?– History of Telephones............. Telephones ............................ ............................. ............................ ............................. ............................. .................. .... 7 HISTORY HISTO RY OF EL ELEC ECTRO TRONIC NICSS............... ............................ ............................ ............................. ................. 7 HOW TO USE DIGITAL PANEL METERS .............. INDUSTRIAL ELECTRONICS ASSEMBLY – A World Apart?............................ Apart? ............................77 ............................. ............................ ............................. ............................. ......................... ........... 7 INTEGRATED INTEGRATE D CIRCUITS CIRCUITS............... ........................... ......................... ...........88 INTRODUC INTRO DUCTION TION TO DIGIT DIGITAL AL SIGN SIGNAL AL PRO PROCE CESSING SSING............. ............................. .............. ............................. ............................ ....................... ......... 9 LED MOVING MESSAGE DISPLAY

............................ ............................. ............................. ................ 9 LOUDSPEAKERS – The First 111 Years .............. ........................... .............99 MAINS OPERATED LINEAR DC POWER SUPPLIES.............. SUPPLIES ............................ ..................................99 MEASURING DISTORTION IN THE HOME WORKSHOP .................................. ............................ .................. .... 9 MICROCOMPUTER TESTING & FAULT FINDING............. FINDING ........................... ............................ ............................ ............................. ............................. ............................ ......................... ........... 9 MINI CIRCUITS .............. ............................ ............................. ............................. ............................ .................. .... 9 MODERN BRIDGE CIRCUITS .............. ............................. ............................. ........................... ............. 9 MODULAR MIXING SYSTEM (Velleman) .............. ............................. ............................. ............................. ................ 9 NOISEE – What is it and Why?.............. NOIS Why? ............................. ............................. ............................ ............................. ............................. ........................... ............. 9 OUT & ABOUT............. ABOUT ............................ ............................ ............................. ....................... ........ 9 PASSIVE ELECTRICAL ELECTRICAL COMPONENT GUIDE .............. ............................ ............................. ................ 9 POWER ELECTRONICS IN THEORY & PRACTICE ............. ............................ ........................... .............99 PREDICTING WAVESHAPES USING A COMPUTER .............. ............................ ............................. ............................. ............................ .................. .... 9 PR OJ OJECTS Audi o.............. o ............................ ............................. ............................ .................. 10 Automotive Electronics.............. Electronics ............................. ............................. ............................. ......................... ........... 10 Computer/Microprocessor.............. Computer/Microprocessor ............................ ............................. ............................. ............................. ............................ ............. 11 Control.............. Control ............................. ............................ ............................. ..................... ...... 11 Fibre Optic & Laser ............... ........................... ............................. ............................. ............................ ....................... ......... 11 Funtronics ............. ............................. ............................ ............................. ............................. ......................... ........... 11 General ............... ............................ ............................. ............................. ............................ .................. 12 Model Cont Control rol .............. ............................. ............................ ............................. ............................. ......................... ........... 12 Musical ............... ............................ ............................ ....................... ......... 12 Power Supplies & Batteries .............. ............................ ............................ ............................. ................. 12 Radio Communications .............. ............................ ............................ ............................. ............................. ......................... ........... 13 Robotics .............. ............................ ............................. ............................ ....................... ......... 13 Security/Protection ............. ........................... ............................ ............................. ..................... ...... 13 Telecommunications ............. ........................... ............................ ............................. ..................... ...... 13 Test & Measurement ............. ............................. ............................ ............................. ..................... ...... 14 Video & TV.............. TV ............................. ............................. ............................ ............................. ..................... ...... 14 PROJECT FAULT FINDING............. FINDING ............................ ............................. ............................. ......................... ........... 14 PULSES ON LINES – A Beginners Guide .............. ............................ ............................. ..................... ...... 14 RS232 SERIAL PORT EXPANSION SYSTEM .............. ............................ ............................. ............................. ............................ ....................... ......... 14 SECOND TIME AROUND .............. ............................. ............................. ............................ ....................... ......... 14 SEMICONDUCTOR PROCESSING .............. ........................14 SOUND REINFORCEMENT SYSTEMS FOR GIGGING BANDS ........................ 14 SQUARE 1 – A First Course in the Theory & Practice of Electronics.................. Electronics..................14 14 ............................. ............................. ............................ ............. 14 SURROUND SOUND – FAD or FANCY? ............... ............................. ............................ .................. 14 SWITCHED MODE POWER SUPPLIES.............. SUPPLIES ............................. ............................. ............................ ............. 14 THE FASCINATION OF VINTAGE RADIO.............. RADIO ............................ ............................ ............................. ............................. .................. .... 14 THE HISTORY OF AMATEUR RADIO .............. ............................ ............................. ............................. ......................... ........... 15 THE HISTORY OF COMPUTERS .............. ............................ ............................. ............................. ............................ ....................... ......... 15 THE INTERNET............... INTERNET ............................. ........................... ............................. ............................. ......................... ........... 15 THE OSCILLOSCOPE IN ACTION ............. ............................ ............................ ............................. ............................. ......................... ........... 15 THE STORY OF RADIO .............. ............................ ............................. ............................. .................. .... 15 USING AUDIO PREAMP ICs.............. ICs ............................ ........................... ............................. ............................. .................. .... 15 VALUE ADDED INTERNET SERVICES ............. ............................ ....................... ......... 15 VALVE TECHNOLOGY – A Practical Guide............... Guide ............................. ............................ ............................. ............................. ............................ ............................. ..................... ...... 15 VELLEMAN KITS .............. ............................ ............................. ............................. ......................... ........... 15 VIDEO PROCESSING SYSTEMS .............. ........................... ............................. ............................. .................. .... 15 WAVEFORM GENE GENERATOR RATOR CIRCUITS ............. ............................ ............................ ............................. ............................. .................. .... 15 WORKING WITH OP-AMPS .............. ...............16 APPENDIX A – Magazine Volume & Number vs. Period Covered ............... 16 ............16 APPENDIX B – Magazine Kit Codes vs. Conventional Order Codes ............ 16 ............................. ............................ ............................. ............................. .................. .... 17 APPENDIX C – Corrigenda ...............

denotes that there is a reference to that item in Appendix C – Corri Corrigenda genda.. Note:: A * against an entry in the main index denotes Note INDEX – VOLUMES 1 to 15

ELECTRONICS AND BEYOND

Title A GUIDE TO MAINS SAFETY Part 1 – Shock, Mains Supply Basics, Types of Shock etc. A GUIDE TO PROFESSIONAL AUDIO Part 1 – Standards, Interconnection Standards, Balanced Lines, PPM Meters * Part 2 – Understanding Microphone Specifications, Connectors & Impedance Part 3 – More on Microphones, Transducer Types, Phantom Power, Cables Part 4 – Choosing & Using Microphones, Amplifiers, Microphone Techniques Part 5 – Stereo Techniques, MS Stereo, Multi-Microphone Set Ups Part 6 – Mixers, Theory of Operation, Virtual Earth Mixers, Input Stages Part 7 – Analogue Tape Recording * Part 8 – Studio Recorders, Broadcast Cartridge, Stereo Recorders Part 9 – Multi-track Recording Equipment Part 10 – Digital Recording, Media and Formats Part 11 – Sony MiniDisc, Digital Compact Cassette, Floppy Disk Part 12 – Equalisation as a Form of Correction ART OF ELECTRONIC MUSIC Part 1 – An Introduction Part 2 – Music Goes Digital * Part 3 – The Art of Sampling Part 4 – The Future AUDIO FREQUENCY INDUCTION LOOP SYSTEMS Part 1 – Introduction & Design Part 2 – Small System Practice & Large System Circuits Part 3 – Bigger & Better Systems Part 4 – A Practical System & Other Stories Part 5 – On the Receiving End AUDIO IC POWER AMPLIFIER CIRCUITS Part 1 – Introduction, LM386/LM389/LM381 Circuits Part 2 – TDA7052/TDA2822/LM1877/TBA820/ LM380/LM384 Circuits Part 3 – TBA810S to TDA1514A-N7 (6 to 40W) Circuits BOBS MINI CIRCUITS Accented Metronome Add-On BFO Adder/Subtracter (Audio) AF Signal Source Analogue Thermometer Atari 8 Channel ADC Audio Isolator Audio Level Tester Audio Millivoltmeter Audio/Visual Metronome Baby Alarm/Intercom Amplifier Basic Noise Gate Bass Fuzz Cable Finder Camera Shutter Timer Capacitance Meter Capacitance Meter Adaptor Capacitor Checker Cassette Processor CBM64/VIC-20 Sequencer Interface PAGE 1

Vol. No. Page

13 82

25

12 64

32

12 65

48

12 66

67

12 67

4

12 68

48

12 69 12 70

64 40

12 71 13 72 13 73

70 27 53

13 74 13 75

49 59

14 14 14 14

92 93 94 95

20 10 68 52

9 39

35

9 10 10 10

40 41 42 43

43 43 72 64

13 80

39

13 81

28

13 82

63

8 4 3 8 4 4 6 6 4 14 4 8 6 4 4 4 7 11 3 4

10 62 55 22 63 56 61 58 25 26 24 12 25 60 61 56 26 74 59 26

30 14 9 31 14 13 22 22 16 88 16 30 21 14 14 13 28 47 11 15

Title

Chorus Unit Clap Switch * CMOS Logic Tester Crystal Calibrator Crystal Checker Discriminating Continuity Tester Door Alarm Dual Effect Tracking Unit DXer’s Notch Filter DXer’s State Variable Filter Dynamic Treble Booster Electronic Die Electronic J oystick Electronic Lock Envelope Tremolo Fuzz Unit Games Timer Guitar Compressor Guitar Headphone Amplifier Headphone Enhancer High Z Voltmeter In-Circuit Resistance Meter Low Resistance Meter Lowpass Filter Effects Unit Metal Pedal Microphone Preamp/Limiter Microphone Preamplifier Midi Lead Checker Midi Through Box Model Traffic Light Model Train Chuffer Model Train Signal Lights Model Train Steam Whistle Modulated Syndrum Morse Code Tone Decoder Morse Regenerator Movement Alarm Ni-Cd Charger Timer Noise Gate Opto Coupled RPM Meter Opto Port Parametric Equaliser Personal MW Radio Pink Noise Generator Portable Stereo Amplifier (LM377) Pseudo Stereo AM Radio Pulsed Speed Controller * Radio Control Field Strength Meter Reaction Tester Resistance Meter RF Probe RTTY Decoder Scratch & Rumble Filter Sensitive Flash Slave Series – Parallel Converter Signal Tracer Signal Tracer * Simple Capacitance Meter Simple Digital Capacitance Meter Simple Fibre Optic link Simple Graphic Equaliser Simple Metal Locater Sinewave Generator Snooze Timer Sound Checker Sound Triggered Flash Speech Processor Stepper Motor Driver

INDEX – VOLUMES 1 to 14

Vol. No. Page

11 5 9 7 5 9 3 11 9 4 11 8 9 7 6 4 7 11 8 2 4 6 5 5 6 3 4 11 7 9 3 14 4 12 9 8 6 3 6 3 6 3 3 6 2 3 7 12 8 4 4 6 6 12 7 4 9 11 14 7 14 4 2 5 11 6 4 6

57 18 36 28 18 39 11 57 36 13 47 30 39 25 21 15 27 57 31 6 13 22 18 18 23 9 16 47 28 39 12 88 14 60 36 31 23 9 21 12 23 11 12 23 6 9 25 60 30 13 15 21 21 60 27 15 39 57 88 27 88 13 6 18 47 22 16 23

63 28 28 28 29 5 58 62 27 58 78 13 3 59 27 28 28 65 18 46 57 60 27 26 62 57 26 75 27 2 52 27 61 37 26 19 58 55 26 51 61 60 50 60 44 54 57 36 11 54 29 28 29 36 27 27 4 64 24 26 26 59 45 28 76 59 28 58


Title

Stereo Bargraph Stereo VU Meter Stylus Organ SW Aerial Amplifier Syndrum Interface Tape Preamplifier Telephone Amplifier Telephone Indicator Temperature Alarm Total Harmonic Distortion (THD) Filter Train Controller Transistor Checker Transistor Tester Transistor Tester Treble Booster Tremolo Unit Tremolo Unit / Dynamic Tremolo Unit TTL Logic Pulser TTL Logic Tester Two-Tone Train Horn Ultrasonic Remote Control Voice-Over Unit Volume Expander Wah Wah Effects Unit Whistle Activated Indicator Woodblock Synthesiser CALCS – Calculations in Electronics Part 1 – Complex Numbers Part 2 – Boolean Algebra Part 3 – Number Systems Part 4 – Indices, Exponents & Logarithms Part 5 – Trigonometry Part 6 – Error Correcting Codes CIRCUIT MAKER – Readers Circuits Audio Lead Connections Car Battery Meter Car Lights Reminder Car Race Starter Modifications Car Race Starter Power Saver Chirping Cricket – Light Activated Annoyance Dan Dare Super Space Age Torch Dual Wire Transmission System Fuse Failure Indication LED Flasher Live Wire Bargraph Ni-Cd Backed-Up Siren for Car Alarms Novel Sound To Light Pseudo Phaser Retriggerable 555 Timer Simple 1:1 M/S Ratio on 555 Timer Simple Ni-Cd Charger Simplified Car Lights Reminder Single Rail to Dual Rail for Op-Amps Variable M/S Ratio with Constant Frequency – 555 Timer COMPUTERS IN THE REAL WORLD Part 1 – Introduction, Processors, Interfaces & Buses, Signal Conversion Part 2 – Encoders, Transducers for Temperature Measurement & Control etc. Part 3 – Input Sampling, Quantisation, S&H Circuits, Signal Conditioning etc. Part 4 – Software Polling, Interrupts, Masking, PICs, DMA, Handshaking Part 5 – Serial v. Parallel, Baud Rates, Parity, 6402UART, 6850ACIA etc. ELECTRONICS AND BEYOND

Vol. No. Page

7 7 2 4 3 4 3 4 4 3 7 4 7 9 11 3 12 8 8 14 9 6 3 12 11 4

27 27 6 16 9 15 12 16 14 11 25 16 28 39 47 12 60 31 31 88 36 21 11 60 57 13

24 25 47 26 56 27 50 23 59 58 58 23 29 6 77 51 34 21 20 24 29 25 59 38 66 54

7 8 8 8 8 8

28 29 30 31 32 33

42 20 2 60 27 43

1 11 1 1 1 11 10 12 1 11 11 11 1 1 11 11 2 2 1

1 55 1 1 1 56 46 60 2 55 51 48 1 2 58 50 5 5 2

51 56 51 50 50 65 74 30 26 56 22 39 50 26 39 67 27 27 26

11 50

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8 33

60

8 34

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9 35

35

9 36

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9 37

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Title

Vol. No. Page

Part 6 – Keyboards, ASCII Code, Other Input Devices, VDUs * Part 7 – Magnetic Recording Principles, Hard & Floppy Disk Systems Part 8 – Linear & Stepper Motors, Control Systems Part 9 – Printers, Dot Matrix, Daisy Wheel, Laser, Inkjet, Thermal, Interfaces DATA FILE – Application Circuits 418MHz Low Power Transmitter & Receiver Modules 78/79 Variable Voltage Regulators 78XXX/79XXX Series Voltage Regulators E510 MIDI Keyboard Scanning Module H14/H14DL Humidity Sensors L200 Adjustable Voltage/Current Regulator * L9801 High Side Driver LM1035 Dual DC Operated Tone/Volume/Balance Control LM1037 Dual Four Channel Analogue Switch LM13700 Dual Transconductance Operational Amplifier – Part 1 LM13700 Dual Transconductance Operational Amplifier – Part 2 LM1875 20W Audio Power Amplifier LM331 V to F / F to V Converter LM386 Low Voltage Power Amplifier MAX293/297 Elliptic Filter MF10 Universal Switched Capacitor Filter MN3004 Bucket Brigade Delay Line MN3011 BBD Reverberation Integrated Circuit MSM6322 Speech Pitch Controller Multi-Purpose 741 Operational Amplifier Card * RC4195 ±15V Regulator Siren Sound Generator SL560C Low Noise RF Amplifier SL561C Low Noise Preamplifier SL6270 AGC Microphone Preamplifier SSM2015 Microphone Preamplifier * SSM2016 Low Noise Differential Audio Preamplifer SSM2017 Microphone Preamplifier SSM2044 4-Pole Voltage Controlled Filter SSM2045 Music Voicing System * SSM2120 Dynamic Range Processor TDA1514A 50W IC Power Amplifier TDA3048 Infra-Red Receiver TDA7052 1W Power Amplifier TLC548I 8 Bit Analogue to Digital Converter UA3730 Electronic Code Lock ULN3390T Twilight Switch UM3750 Encoder/Decoder ZN419/409 Precision Servo Driver

9 38

58

9 39 9 40

25 29

10 41

58

13 11 11 12 11 10 11 8 8

73 53 52 69 55 46 54 33 34

40 64 73 24 48 48 32 32 28

8 31

32

8 8 11 8 13 9 11 11 10 12 11 14 13 13 11 9 10 12 10 10 11 9 9 9 13 11 13 9 10

32 30 57 29 80 38 48 49 44 68 50 90 74 76 51 39 41 69 42 43 47 40 35 37 75 56 73 36 45

48 16 8 32 59 24 56 48 56 28 32 28 20 28 56 40 4 8 64 4 32 64 32 76 24 66 8 57 24

11 11 11 11

49 50 51 52

64 19 35 64

11 53 11 54

58 10

11 55

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DESIGNING & BUILDING SUBWOOFER SYSTEMS Part 1 – How to Begin Part 2 – Box Losses & Amplifier Gains Part 3 – Adding a Tweeter

13 74 13 75 13 76

57 46 60

DISCOVERING SATELLITE TELEVISION Part 1 – The Origin

11 59

65

DESIGN & APPLICATION OF S EQUENTIAL LOGIC Part 1 – Design Concepts involved in Digital Electronics Part 2 – Asynchronous Counters Part 3 – Asynchronous MSI Chips Part 4 – State Diagrams, Karnaugh Maps Part 5 – Synchronous MSI Counters, TTL Counter Chips Part 6 – Serial & Parallel Registers, Ring Counters Part 7 – Interfacing Counters & Registers to Displays


PAGE 2

Title

Vol. No. Page

Part 2 – Signals from the Clarke Belt Part 3 – Europe Sans Frontieres, The Scrambling Phenomenon Part 4 – Beyond The Grave Part 5 – Beyond The Grave (Continued) Part 6 – IRDs (Integrated Receiver-Decoders) – A Change for the Better? Part 7 – For The Enthusiast – Multi Satellite Receivers Part 8 – For The Enthusiast – The Echostar SR-50 *

12 60

24

12 62 12 63 12 64

32 56 53

12 68

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12 69 12 70

32 28

ELECTRONIC CHRONICLES – A Brief History of Electronics Part 1 – Introduction, Early Beginnings 3 10 Part 2 – The Dawn of a New Era 3 11 Part 3 – Henry, Siemens, Kirchhoff, Lord Kelvin, Maxwell, Hertz 3 12 Part 4 – Edison, Tesla, Marconi 4 13 Part 5 – The History of Television 4 14 Part 6 – The History of the Digital Computer, Babbage, Hollerith 4 16 ELECTRONICS BY EXPERIMENT Part 1 – Introduction, Power Supply for Digital Circuits, Logic Probe etc. Part 2 – Addition & Subtraction, Decoders, BCD to 7 Segment, 555 Timer Part 3 – J -K Flip Flops, Debounce Switch, Counters Part 4 – D Type Flip Flops, Shift Registers, Ring Counters Part 5 – Schmitt Triggers, Monostables Part 6 – Operational Amplifiers Part 7 – Operational Amplifier Applications Part 8 – Unijunction Transistors Part 9 – Silicon Controlled Rectifiers (SCRs) Part 10 – Triac, Diac, SCS, SUS, SBS, & PUT Part 11 –Power Supplies, Zener Diodes, Voltage Multipliers Part 12 –Waveform Generator Circuits ELECTRONIC FILTER CIRCUITS Part 1 – Passive, Band Pass & Notch, Twin ‘T’ Part 2 – Resonant L C Filters

9 55 16 36 5 20

7 25

52

7 26 7 27

27 19

7 8 8 8 8 8 8

28 29 30 31 32 33 34

47 26 21 51 10 35 51

9 35 9 36

65 42

15 105 15 106

66 66

ELECTRONICS IN AVIATION Part 1 – The Early Years Part 2 – Air Traffic Control Part 3 – Communication Part 4 – Navigation Part 5 – Instrumentation Part 6 – The Space Shuttle

11 11 11 11 11 11

49 50 51 52 54 55

4 4 24 4 4 4

EMC - ELECTROMAGNETIC COMPATIBILITY Part 1 – Where We Are & How We Arrived There Part 2 – Emissions Part 3 – Immunity Part 4 – Frequently Asked Questions (FAQs)

15 97 15 98 15 99 15 100

46 57 66 85

EXPLORING RADIO Part 1 – Introduction, A Little Theory, The Crystal Set Part 2 – The TRF Receiver Part 3 – ZN414 AM Tuner IC – MW Receiver Part 4 – Expansion of MW Receiver to Cover LW Part 5 – SW Receiver Part 6 – How to Build an FM Stereo Receiver Part 7 – TRF Reflex Receiver Part 8 – TRF Marine Band Receiver FEATURES – Astronomy An Introduction to Radio Astronomy PAGE 3

7 7 7 7 8 8 8 8

25 26 27 28 29 30 31 32

12 60

26 40 38 38 66 26 44 37 56

Title

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Collision Earth Discover J upiter and its Satellites Hipparcos Satellite - The Road Map in the Sky Light Pollution The Hunt for Dark Matter The Infra Red Space Observatory The New Look Planetarium The SOHO Mission - Sun Gazing Window on The Universe FEATURES – Audio Compact Disc Digital Audio Computer Graphic Equaliser with Remote Control Coupled Cavity Speakers – Part 1 Coupled Cavity Speakers – Part 2 Coupled Cavity Speakers – Part 3 Designing Op Amp Circuits How Audio Data Compression Systems Work How Digital Compact Cassette Works Loudspeaker & Amplifier Specifications Maplin Dolby Surround Sound Processor – Guide to Using Microphones * MS Stereo – Part 1: The Basic Principles MS Stereo – Part 2: Experiments RIAA – CD Versus Vinyl – Part 1 RIAA – CD Versus Vinyl – Part 2 RIAA – CD Versus Vinyl – Part 3 Saved in the Nick of Time . . . Recovering Rare Recordings Sound Advice – Replacement Loudspeakers Speaker Design - Software Review Taped – Part 1 Taped – Part 2 The Rock Circus The War of the Digital Formats . . . Enter the Sony MiniDisc Watts in an Amplifier? – Part 1 Watts in an Amplifier? – Part 2 Which Power Amplifier? Integrated Circuit Power Amplifiers

14 93 14 84 15 97 14 85 15 101 15 106 15 96 15 105 14 86

32 3 32 16 8 30 4 6 68

2 8 14 14 14 13 14 13 7

5 31 90 91 92 83 86 72 26

8 72 55 68 46 52 47 8 19

9 10 14 14 14 14 14

40 46 89 90 88 89 90

32 37 58 62 16 16 20

13 77 4 13 15 104 9 40 10 41 9 35

12 17 28 24 64 5

13 73 6 21 6 22

16 54 14

7 26

48

FEATURES – Automotive Electronics An Introduction to Car Electrics – Part 1 3 10 An Introduction to Car Electrics – Part 2 3 11 Autoguide – Traffic J am Buster? 9 35 Dwell Angle Measurements 3 12 Electronic Ignition – Part 1 11 53 Electronic Ignition – Part 2 11 54 In Car Routefinder Review 15 104 Microcontrollers in Automotive Applications – Part 1 11 48 Microcontrollers in Automotive Applications – Part 2 11 49 Traffic Master – In Car Navigation System 11 47 Trafficmaster Traffic Data Network 15 102 Taking Toll of Traffic J ams – Automatic Vehicle Identification Explained 12 61 Weigh-in-Motion, Vehicle Weighing on the Move 12 64 FEATURES – Aviation Electronics The Godfrey Manning Aircraft Museum FEATURES – Circuit Design Designing Linear Circuits with Bipolar Transistors Improve Your Circuit Design with the Aid of a Scientific Calculator FEATURES – Components, Active & Passive Copper Indium Selenide (CIS) Photocells Diodes


20 16 72 62 44 43 37 12 18 4 24 4 4

13 77

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13 82

29

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39

11 58 7 27

48 54


Title

LEDs and Their Applications – Part 1 LEDs and Their Applications – Part 2 LEDs and Their Applications – Part 3 Low Distortion Operation of LM358 New Standards le Logic 3.3V Logic Arrives Power Management in Semiconductors – Part 1 Power Management in Semiconductors – Part 2 Resistors in Series and Parallel Which Bipolar? (Transistors) Which Capacitor? Which FET? Which NAND Gate? Which Op-Amp? Which Resistor?

Vol. No. Page

14 85 14 86 14 87 14 95 15 102 14 86 14 87 11 47 6 22 5 20 6 23 7 25 6 24 6 21

FEATURES – Computer/Microprocessor A Boot-up Protection System for the PC 13 A to D to A Conversion Techniques 5 Allophone Speech Synthesis Techniques 2 An Introduction to Programming in BASIC – Part 1 * 10 An Introduction to Programming in BASIC – Part 2 10 An Introduction to Programming in BASIC – Part 3 10 An Introduction to Programmable Logic 14 An Introduction to Single Chip Microcomputers/Controllers 10 An Overview of Computer Viruses 12 Basically BASIC – Part 1 1 Basically BASIC – Part 2 1 Basically BASIC – Part 3 1 Basically BASIC – Part 13 1 Basically BASIC – Part 14 2 Basically BASIC – Part 15 2 Casio FX-850P Personal Computer 8 Catching A Virus Cold – Computer Viruses 8 CD-ROM – A Match Made in (Silicon) Heaven 11 Citizen LCM64 Compact Liquid Crystal Display Monitor Review 12 Colour Printing (Computer Printer Guide) 14 Computer Aided Design & The Personal Computer 11 Computer Modelling – With A Difference 13 Computers Can Be A Right Pain – Repetitive Strain Injury 12 Computing without Clocks 15 Content Based Indexing for Multimedia 15 Coprocessors 12 Database Management – Part 1 3 Database Management – Part 2 3 Flash EPROMs (Explained) 14 Frame Relay Put Plainly 12 Galleon MSF Computer Clock 15 Getting a Better Image – Image Processing 11 Getting A J ob in Computers 9 Guarding Against Disk Failure 12 High Bandwidth Memory 15 IBM PC based ‘Electronic Principles’ Educational Software 13 Inter-Networking 11 Interfacing Microprocessors Using Parallel I/O Ports 2 Interfacing the BBC Micro 2 Introduction to Neural Networks 12 Low Energy Personal Computers 14 Machine Code Programming with the 6502 – Part 1 2 Machine Code Programming with the 6502 – Part 2 2 Machine Code Programming with the 6502 – Part 3 3 Machine Code Programming with the 6502 – Part 4 3 Machine Code Programming with the 6502 – Part 5 3 Machine Code Programming with the 6502 – Part 6 3 Machine Code Programming with the 6502 – Part 7 4 ELECTRONICS AND BEYOND

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Machine Code Programming with the 6502 – Part 8 Machine Code Programming with the Z80 – Part 1 Machine Code Programming with the Z80 – Part 2 Machine Code Programming with the Z80 – Part 3 Machine Code Programming with the Z80 – Part 4 Machine Code Programming with the Z80 – Part 5 Machine Code Programming with the Z80 – Part 6 Machine Code Programming with the Z80 – Part 7 Machine Code Programming with the Z80 – Part 8 Magnetic Disks & New Applications Networking Intelligence – A Protocol for Control Applications Network Management Now Hear This – Getting the Voice Processing Message Optical Computing Optical Disks PCMCIA (PC Memory Cards) Personal Communications Network – Implementation in the UK Pictures by Numbers:MPEG Video Compression Raising the CLANS (Cableless Local Area Networks) Road Testing The Sord M5 Microcomputer RS232 Explained . Serial Packet Controllers Sitting in Your Lap or Palm, or on your Desk? The 486/386 Debate The EPP-1 EPROM Programmer The Leading LAN Operating Systems in Europe The Quiet Revolution – PCs The Next Ten Years The VIC 20 Colour Computer TMS320C26 DSP Starter Kit TMS77C82 Microcontroller – Part 1 TMS77C82 Microcontroller – Part 2 Touch Screen Technology Transferring BBC Text Files to PC MS-DOS Transputers – The Component Computer Social Computing What Are PIC Chips? What on Earth is Fuzzy Logic? When Disaster Strikes! (Computer Security) When The Computer Chips Are Down – Help Is At Hand Workgroup Networking

15 17 18 19 20 21 22 23 24 95

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FEATURES – Computer Networking A Technical Look at Network Management All About Internet Client Server IEEE-488 Explained Network Computers - The Set-Top Box Quo Vadis? – Future of Computers Satellite Based Networking (VSAT) Secure Information – Electronic Data

15 13 15 14 15 13 14 14

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FEATURES – Control Driving for Control - Electric Motor Drives Improved Timer Control (555/7555 Timer ICs) Keeping in Step - Stepper Motors Lamp/LED Brightness Control Circuits Mains Power Control with Triacs Remotely Operated Vehicles (ROVs) Tram Technology on the Move

15 2 14 15 5 13 13

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FEATURES – Fibre Optic & Laser An Uncertain Future for FDDI-II (Optical Fibre Networks) Fibre Optic Technology Holography Theory & Practice

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Lasers & Fibre Optics Optical Computing Optical Materials The Use of Lasers in Ophthalmology What’s in a Laser?

Vol. No. Page

4 15 15 15 12

13 96 99 101 63

FEATURES – General A Brief History of ‘Electronics The Maplin Magazine’ 15 100 A Century of Magnetic Materials 15 106 Access Control - Biometrics 15 97 Aerogels 15 103 Apple Expo ‘95 Review 15 98 New Landmark for the Thames (Thurrock-Dartford Bridge) 11 49 Across The Board – A Look at PCB Manufacturing 11 59 Barred for Life – Bar Codes & Electronic Point of Sale 9 37 Bringing the Waxworks to Life At Madame Tussaud’s 12 66 Broadband ISDN 11 57 Building Gets Smart – Office Comms Cabling 9 37 Club Med Gets Smart 8 29 CNN (Cable News Network) International Tells it to the World 11 50 Cold Fusion – Fact or Fantasy? 13 80 Connections Made Easy (IDC Connectors & Ribbon Cable) 3 12 Countdown to 1992 – European Single Market 9 36 Earth Resources Satellites 15 100 Educational Solar Energy Kits 12 68 Electronic Home Monitoring of Offenders 9 36 Electronic Point of Sale – High Tech in the High Street 10 42 Eurostar (Eurotunnel Express) 14 94 Exploring Venus – The Magellan Mission 12 70 Extra Terrestrial Life – The Search Goes On! 13 81 Face to Face – An Interview with R. A. Penfold 10 46 Facsimile Developments 11 56 Fast Food Counter – Microwave Facts * 10 45 Fast Forward to The Future 12 60 Ferrofluids 9 35 Fit for Electronics 11 53 Flexible Business Revolutions Ahead 15 102 Food Drink and EPOS (Electronic Point of Sale) 11 50 Frame Relay Networks 11 59 Fundamentals – Basic Principles of Electricity * 10 42 Genius or Magician? Arthur C Clarke 15 101 Global Climatic Changes 12 69 Harnessing Wind Power – Wind Turbines 12 63 Here Now in Dolby Stereo – Cinema Sound 9 37 Hi-Tech Kicks Off Euro 96 15 103 History of Defibrillation 14 91 Hobbyist in Action – Ian Connolly 9 36 Hobbyist in Action – Philip Walker 8 30 Hobbyists in Action – Model Railway Layouts 8 32 Holography 9 36 How To Solder 1 1 Hubble Back on Track – The Hubble Space Telescope 13 82 Imaging in Nuclear Medicine 12 67 Introducing Velleman 11 50 It’s About Time! Chronology of The Modern Timepiece 15 96 Knowledge Based Systems, Neural Networks & Expert Systems 11 51 Life Beneath The Ocean 14 87 Live ‘95 - The Consumer Electronics Show 15 96 London’s Trocadero - The High Tech Experience 15 105 Make It With Maplin – Part 1 4 14 Make It With Maplin – Part 2 4 15 PAGE 5

6 32 24 24 16

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Title

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Make It With Maplin – Part 3 4 16 Make It With Maplin – Part 4 5 17 Making Your Own PCBs 1 3 Making Your Own PCBs Using CAD 14 90 Maplin Comes To Nottingham 8 31 Maplin Comes To Leeds 8 33 Maplin in Bristol 8 29 Mysterious Mars The Dreamer’s Planet 13 73 New Maplin Shop in London 8 34 Outsourcing and Facilities Management 13 78 PCB Etching Kits 15 106 Piezo Technology – How to use Piezo Electric Film 12 61 Projecting Ahead – The Life Story of a Maplin Project 11 58 PUFFIN – Pedestrian User Friendly Intelligent Crossing? 13 79 Refrigeration The Production of Cold 5 19 Rewiring Your House – Part 1 2 8 Rewiring Your House – Part 2 3 9 Say It With Satellites – Part 1 1 4 Say It With Satellites – Part 2 2 5 Say It With Satellites – Part 3 2 6 Say It With Satellites – Part 4 2 7 Say It With Satellites – Part 5 2 8 Scouts Show Off Their Electronic Skills 8 29 Searching for Creation – The European CERN Facility 13 74 Space Propulsion Present & Future 14 95 Starting Point – Part 1 – Transistor Amplifying Modes 1 1 Starting Point – Part 2 – Transistor Amplifying Modes cont. 1 2 Starting Point – Part 3 – Classes of Amplification 1 3 Starting Point – Part 4 – Inductance 1 4 Starting Point – Part 5 – UJ Ts, FETs & SCRs 2 5 Static Electricity Friend and Foe 12 62 Taken for Granted – House Wiring & Electrical Safety 4 13 The BT Global Challenge Yacht Race 15 104 The Changing Face of Maplin – New Maplin Distribution Centre 9 36 The First Picture Show – A History of Facsimile Transmission 12 61 The History of Maplin 15 106 The Identity of the Electron 15 105 The Lament of the Engineer’s Wife – Part 1 8 34 The Lament of the Engineer’s Wife – Part 2 9 35 The National Lottery (Explained) 14 90 The Revolution in Microscopy 15 98 The Rutherford Appleton Laboratory 15 104 The Search for Superconductivity 13 76 The Zeeman Effect - The Missing link 15 105 Thermal Protection – Too Hot to Handle! 13 80 Tunnel Vision (About Eurotunnel) 14 93 UV Radiation (About UV Light) 14 92 Virtual Reality 11 52 Visions of the Future - The Millennium and Beyond 15 101 What Do You Know About Your Microwave Oven? 11 53 What Is Pulse Code Modulation? 5 17 When Lightning Strikes! 15 97 Wires & Wherefores – Cables & Wires Discussed 2 5 Yesterday’s Electricity (The Pioneers) 14 92

44 37 38 22 21 3 19 4 4 30 16 24 22 40 22 77 2 16 42 62

FEATURES – Logic Circuits Boolean Algebra – Part 1 – Intro, The Truth Table, De Morgan’s Laws 11 49 Boolean Algebra – Part 2 – The Karnaugh Map 11 50 Boolean Algebra – Part 3 – Design of Logic Circuits 11 51

36 44 42

FEATURES – Model Control Getting Into Radio Control Model Car Racing Radio Controlled Model Cars – Introducing


9 37

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The Basics Radio Controlled Model Cars – Advanced Techniques

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73

FEATURES – Musical Digital Signal Processing Kit Review MIDI Interfacing Techniques

14 87 6 22

16 2

FEATURES – Power Supplies & Batteries Battery Technology Circuit Breakers Domestic Power Supply Problems – Spikes, Noise & Glitches Fuses (Choosing) Lead Acid Battery Charger (4V, 6V & 12V) Mains Safety in Hobby Projects Mains Transformers – Part 1 – From Theory to Practice Mains Transformers – Part 2 – Pulling It All Together Not Flat J ust Run Down – Rechargeable Batteries Positive Thinking - Negative Voltages from Battery Supplies Recycling Batteries The Basic Principles of AC Power Supply The Sealed Nickel Cadmium Battery The Shocking Truth (About Electric Shock) FEATURES – Radio Communications A Listeners Guide to Radio Propagation – Part 1 – The Story Below 30MHz A Listeners Guide to Radio Propagation – Part 2 – The Story Above 30MHz Amateur Radio on the HF Bands Amateur Radio on VHF and UHF Broadcasting To The World – The BBC World Service Demodulating FM Radio Signals – The Amplitude Locked Loop Frame and Ferrite Rod Antennas Global Positioning System Software Hospital Radio – The Patient Voice How a Superhet Radio Works How To Repair Radios – Part 1 How To Repair Radios – Part 2 H/VHF Aerial Analyser Review Loudspeaker Radio Receiver Project Review Pagers - Getting The Message Across Paging on The Move – Radio Paging Radio Data System (RDS) Update Radio with Brains – Radio Data System (RDS) Receiving Weather Satellite Images Satellite Sound Broadcasting – White Elephant in Orbit Setting Up a Radio Shack Short Wave Broadcasting Today The Amateur Radio Novice Licence & How to Obtain It The Birth of the Antenna The Future of GPS What are Scanners? What are Phase Locked Loops? Whatever Happened to CB (Citizens’ Band) Radio? What is Paknet? FEATURES – Robotics Practical Robotics Techniques– Part 1 Practical Robotics Techniques– Part 2 * Practical Robotics Techniques– Part 3 Practical Robot Techniques – A PC Update ELECTRONICS AND BEYOND

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Title FEATURES– Security/Protection Domineye - The TV Watchdog ISecurity Camera) Making The Most of The Maplin Security System Security on the Move – The Incident Command Vehicle Stop Thief! Versatile Multi-Purpose Intruder Alarm Vixen Car Alarms (Fox Security)

Vol. No. Page

15 106 11 59

48 48

12 66 13 82 15 106

32 74 54

8 31 14 84 3 12

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FEATURES - The Internet Internet Search Engines Netscape Navigator 3.0 Browser Pop in for a Byte - The Internet Cafe The New Cyber Provider - AOL

15 15 15 15

104 105 100 101

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FEATURES – Video & TV Datavideo VP-275 Video Effects Processor Review

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FEATURES – Telecommunications Adding Value To Your Telephone All About Maplin Key Call All About Your Telephone An Uncertain Future for FDDI-II (Optical Fibre Networks) Circuit Mode Switching Corporate FAX Market Trends Digital Switched Networks and the Consumer Getting the Low-down on the BT Tower Omnicom FS1515 Telephone Exchange Sailing Ship to Satellite – Part 1 Sailing Ship to Satellite – Part 2 Tackling Nuisance or Obscene Telephone Calls Telecommuting – Going To Work At Home The Cordless Phone Box Arrives What Is System X Anyway? – Part 1 – The New Digital Network What Is System X Anyway? – Part 2 – The Digital Exchange FEATURES – Test & Me asurement 20 & 40MHz Topward Oscilloscopes Review A Practical Guide to Impedance Matching & Mismatching An Instrument for All Seasons – Philips Scopemeter Review Attenuators – Theory & Design Beginners Guide To Circuit Testing – Part 1 Beginners Guide To Circuit Testing – Part 2 FLUKE Series 10 Digital Multimeters Review & Typical Applications Frequency Measurement in the Home Laboratory K7100 Digital Multimeter Kit Review Measurements in Electronics – Part 1 Measurements in Electronics – Part 2 Measurements in Electronics – Part 3 Measurements in Electronics – Part 4 Measurements in Electronics – Part 5 Measurements in Electronics – Part 6 Multimeters Test Gear & Measurements – Part 1 Test Gear & Measurements – Part 2 Test Gear & Measurements – Part 3 Test Gear & Measurements – Part 4 * Test Gear & Measurements – Part 5 Test Gear & Measurements – Part 6 Test Gear & Measurements – Part 7 Trouble Shooting Digital Circuits with Logic Pulser, Probe & Clip Using The Signature Analyser – Flight Electronics 20MHz Analyser Within Your Scope


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Digital VHS Explained Digital Video Technology From Up Above or Down Below – Satellite or Cable? Getting HDTV into Perspective – The Next Phase Granada Future Television HDTV Pictures Still Out of Focus Making the Right Connections in Video (Video Connectors) New French Revolution Gathers Pace – Minitel Videotex NICAM 728 – British Digital Stereo Sound for Television NICAM 728 – Part 1 – Digital Stereo Sound Comes to Television NICAM 728 – Part 2 – NICAM Decoder Construction & Use Pictures by Numbers – MPEG Video Compression Pictures of Confusion – TV Picture Conversion Between Standards Putting You in Control of Your CD Player SKY Flies High The Care & Feeding of Video Modulators The Digits are Coming – Digital Techniques in TV Receivers The Video Revolution UK IBA NICAM Coverage Videoconferencing – Getting into the Picture Video Networking and Smart Hubs Videotex – Teletext & Viewdata Video Termination – When, Where & Why FILTERS – How and Why? Part 1 – Why and How? Part 2 – High-Pass and More Theory Part 3 – Band-Pass and Band-Stop Part 4 – Band-Pass and Notch, Tuned Circuits Part 5 – High Performance Active Filters Part 6 – All Pass Filters and Networks Part 7 – Computers in Filter Design FINISHING OFF Part 1 – Drilling Holes Part 2 – Building The Kits Part 3 – Selecting Design & Layout of Controls Part 4 – Spraying, Covering & Labelling

15 15 11 12 15 10

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FIRST BASE – A Beginners Guide to Logic Design Part 1 – Introduction, Logic Power Supplies * 2 Part 2 – Schottky Devices, Logic Levels, Truth Tables 2 Part 3 – ALUs, Half Adders, Full Adders * 2 Part 4 – Hexadecimal Numbers, Clocks 3 Part 5 – Loose Ends, Open Collector Outputs, Counters & Displays 3 Part 6 – More Chips, Memory, Static RAM, Sequential Addressing 3 Part 7 – CMOS Devices, Logic Gates, Counters 3 Part 8 – Crystals, Crystal Clocks 4 Part 9 – Multiplexers, Microprocessor Buses 4 Part 10 –Microprocessor Based Systems 5 GETTING TO KNOW TEST EQUIPM ENT Part 1 – Identifying the Needs and Applications Part 2 – Analogue Test Equipment * Part 3 – Oscilloscopes Part 4 – Digital Meters Part 5 – Counters and Signal Sources Part 6 – Automatic Test Equipment (ATE) PAGE 7

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GUIDE TO MODERN DIGITAL ICs Part 1 – Basics Part 2 – TTL and CMOS Families Part 3 TTL Basic Usage Rules etc Part 4 - CMOS Basics,Power Supplies etc Part 5 CMOS 4007UB Basics Part 6 - Practical Buffers,lnverters & Logic Gate ICs Part 7 - Waveform Generator Basics * Part 8 - Clocked Flip-Flop Basics Part 9 - Down & Up/Down Counters Part 10 - Latches, Registers & Comparators Part 1 1 - Multiplexers, Decoders etc.

14 93 14 94 14 95 15 96 15 97 15 98 15 99 15 100 15 101 15 102 15 103

HEARING DEAFNESS & ELECTRONIC TECHNOLOGY Part 1 – The Hearing Process 10 Part 2 – Cochlear Implants 10 Part 3 – Overcoming Barriers 10 Part 4 – Sound Advantage 10 HELLO WHO’S CALLING? - History of Telephones Part 1 – Invention, Early Systems, Post Office Intervention Part 2 – Central Battery System, Development of ‘Candlestick’ Telephone Part 3 – Hand Combination Set, Initial Development, ASTIC System Part 4 – The First One Piece Telephone, No. 330 Part 5 – Postwar, The 700 Type Telephone Part 6 – Loudspeaking Telephones Part 7 – Modern Telephones HISTORY OF ELECTRONICS Part 1 – The Foundations Laid Part 2 – The First Uses of Electricity Part 3 – The Thermionic Age Arrives Part 4 – The Transistor is Discovered Part 5 – Miniaturisation and ICs HOW TO USE DIGITAL PANEL METERS Part 1 – Digital Panel Meter Basics, Basic DPM Configurations Part 2 – Maplin LCD DPM Application Details Part 3 – Voltage, Current and Resistance Meter Circuits Part 4 – Capacitance and Frequency Meter Circuits

27 49 58 50 58 46 42 58 58 66 66

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INDUSTRIAL ELECTRONICS ASSEMBLY – A World Apart? Part 1 – PCBs, PCB Classifications etc. 12 65 Part 2 – Surface Mounted Components & Soldering Processes 12 66

48

INTEGRATED CIRCUITS 555/7555 Timer 555 Timer 555 Timer 6502A 8 Bit Microprocessor (Pinouts) 6522 VIA (Versatile Interface Adaptor) 6821 Programmable Interface Adaptor 741 Operational Amplifier 8255A Programmable Peripheral Interface AY-3-1350 ROM Music Synthesiser E100SV1 Infra-Red Detector E510 MIDI Keyboard Scanner HT1030 3V Regulator HT281 1 Doorbell Sound Generator HT2811 Doorbell IC HT2860 Siren Sound Generator HT82207 Wild West Sound Generator

7 51 40 72 25 56 28 24 22 48 24 5 5 11 28 4


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HT82231 Animal Sound Generator 14 HT8950 Voice Modulator 15 HT8955A Voice Echo IC 14 ICL8038 Waveform Generator 11 ICL8038CCPD Waveform Generator 11 ICL8211CPA Precision Voltage Detector 13 ICM7216A Counter Timer 10 ICM7224IPL LCD 41/2 Digit Counter/Driver 11 ISD1016A Voice Record/Playback IC 14 ISD1016AG Voice Record/Playback IC 14 ISD1016AP Voice Record/Playback IC 14 L200 Adjustable Voltage/Current Regulator 10 L9801 High Side Driver 11 LM1037 Dual Four Channel Analogue Switch 8 LM1310P Stereo Decoder 8 LM13700 Dual Transconductance Operational Amplifier 8 LM13700N Dual Transconductance Operational Amplifier 11 LM1830 Fluid Detector 3 LM1871 6 Channel Transmitter 4 LM1872 6 Channel Receiver 4 LM1875 20W Audio Power Amplifier 8 LM1875N 25W Audio Power Amplifier 13 LM1881N Sync Separator 11 LM1894 DNR (Dynamic Noise Reduction) Processor 9 LM2879 Dual 9W Audio Power Amplifier 13 LM331 V to F / F to V Converter 11 LM334Z Constant Current Source 13 LM339 Quad Operational Amplifier 12 LM3240uad Op Amp 14 LM358 Dual Op Amp 14 LM377 Dual 2W Audio Amplifier 7 LM380 3W/4Ω Audio Amplifier 7 LM381/LM382/LM387 Integrated Circuits 13 LM383(TDA2003) 8W Audio Power Amplifier 13 LM386 Low Voltage Power Amplifier 8 LM387/TDA3410/MC3340P/NE570/571 Integrated Circuits 13 LM389 Audio Preamplifier/Power Amplifier 4 MAX293/297 Elliptic Filter 13 MF10 Universal Switched Capacitor Filter 9 MN3011 Bucket Brigade Delay Line 11 MSM6322 Speech Pitch Controller 10 NE5534A Low Noise Op-Amp 12 NE571 Compander 9 OP470 Quad Operational Amplifier 11 PIC16C54RC 8 Bit CMOS Microcontroller 11 PIC16C54RC 8-Bit CMOS Microcontroller (RM9011 Module) 13 PIC16C71 Microcontroller 14 PIC16C84 Microcontroller 14 RC4195N Dual Polarity Tracking Regulator 15 SAA1027 Stepper Motor Driver 5 SAA1027 Stepper Motor Driver 14 SAA1099 Sound Generator 11 SAB0600 Tone Generator 11 SL560C Low Noise RF Amplifier 13 SL560C Low Noise RF Amplifier 13 SL561C Low Noise Preamplifier 13 SL6270C VOGAD Preamplifier 11 SL6270CDP VOGAD Preamplifier 15 SPO256 Speech Synthesiser 9 SSM2015 Microphone Preamplifier 9 SSM2016 Low Noise Differential Audio Preamplifier 10 SSM2017 Microphone Preamplifier 12 SSM2044 4-Pole Voltage Controlled Filter 10 SSM2045 Music Voicing System 10 SSM2120 Dynamic Range Processor 11 SSM2120 Dynamic Range Processor IC 15 ELECTRONICS AND BEYOND

93 96 89 58 48 76 45 55 85 87 91 46 54 34 30 31 54 11 13 13 30 82 51 40 82 57 76 61 95 95 26 26 74 82 29

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SSM2142 Balanced Line Driver SSM2142 Balanced Line Driver TEA2000 Colour Encoder & Summer TA8662N Quadrant Phase Shift Keying Modulator TBA2800 Infra-Red Receiver TBA810S/P 6W Audio Power Amplifier TBA820M 500mW Amplifier TBA820M Audio Amplifier TBA820M Audio Amplifier TCA6011N Pulse Code Modulation Detector TD6710AN 14 Bit D to A with Dual Channel Audio Outputs TDA1010 6W Car Radio Amplifier TDA1074A Dual Stereo Electronic Potentiometer TDA1514A 50W IC Power Amplifier TDA1514A Audio Power Amplifier TDA1514A-N7 40W Audio Power Amplifier TDA1520 22W Audio Power Amplifier TDA1520 11W/8Ω Audio Amplifier TDA2004 Dual 9W Audio Power Amplifier TDA2005M 20W Bridge Mode Audio Power Amplifier TDA2006V 12W Audio Power Amplifier TDA2030 10W Audio Amplifier TDA2030 15W Power Amplifier TDA2030 15W Power Amplifier TDA2030AV 18W Audio Power Amplifier TDA2050V 32W Audio Power Amplifier TDA2822 0.6W Stereo Amplifier TDA2822 1W Stereo Amplifier TDA2822 1W Stereo Amplifier TDA3048 Infra-Red Receiver TDA7000 FM Radio Integrated Circuit TDA7000 FM Radio Integrated Circuit TDA7052 1.2W Bridge Amplifier TDA7052 1W Power Amplifier TDA7052 Headphone Power Amplifier TEA2000 Colour Encoder TLC548I 8 Bit Analogue to Digital Converter TMS1601ANLL Masked Programmable Microcontroller TMS77C82 Microcontroller U2400B Ni-Cad Charger Controller U6047B Long Duration Timer UA3730 Electronic Code Lock ULN2455A Lamp Failure Monitor ULN3390T Twilight Switch UM34811A Multi Tune Generator UM3511A Melody Generator UM3561 Siren Sound Generator UM3750 Encoder/Decoder UM3763 Voice Control (Whistle) IC UM5100 Voice Processor UM66 Melody Generator XR-2206 Waveform Generator XR-2211 Phase Locked Loop Tone Decoder XR-2211 Phase Locked Loop Tone Decoder Z80A 8 Bit Microprocessor (Pinouts) ZN419/409 Precision Servo Driver ZN425E D to A / A to D Converter ZN449 Successive Approximation D to A Converter ZNA234E Video Pattern Generator

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INTRODUCTION TO DIGITAL SIGNAL PROCESSING Part 1 – Introduction and Simple Filters 13 Part 2 – Digital Filters 14 Part 3 – DSP Workbench Design Program 14 Part 4 – Pole-Zero Diagram Filter Design 14

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LED MOVING MESSAGE DISPLAY Part 1 – System Overview & Moving Message Display Module Part 2 – Testing the Display Module, Controller Module Construction Part 3 – The Expandable Power Supply Part 4 – Software Development LOUDSPEAKERS – The First 111 Years Part 1 – The Early Years Part 2 – War and the First Wave of High Fidelity Part 3 – Late 50’s Stereo to Swinging 60’s Stereo Part 4 – The Frantic 70’s Part 5 – The Uncertain 80’s

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MAINS OPERATED LINEAR DC POWER SUPPLIES Part 1 – The Basics 11 48 Part 2 – The Rest of The Basics 11 49 Part 3 – Computer Aided Design 11 50

44 69 60

MEASURING DISTORTION IN THE HOME WORKSHOP Part 1 – What is Distortion? 8 Part 2 – Some New Concepts 9 Part 3 – Equipment for Practical Measurements 9 Part 4 – Selective Measurements 9

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MICROCOMPUTER TESTING & FAULT FINDING Part 1 – An Introduction to Microcomputer Hardware 11 Part 2 – I/O Devices 11 Part 3 – Floppy & Hard Disk Drives 11 Part 4 – Test Equipment 11 Part 5 – Software 11

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MINI CIRCUITS CMOS 4001/4011 Chip Tester CMOS 4017 Chip Tester CMOS Heads or Tails Indicator Go/No Go Thyristor Tester LM3909 Signal Injector Soil Moisture Tester

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MODERN BRIDGE CIRCUITS Part 1 – The Wheatstone Bridge Part 2 – Precision LCR Part 3 – Specials

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MODULAR MIXING SYSTEM (Velleman) Part 1 – Stereo VU Meter Part 2 – Dual Stereo Tone Control Module Part 3 – Dual Stereo Fader Module Part 4 – Monitor & Effects Module Part 5 – Dual Input Amplifier Module Part 6 – Master & Headphone Module Part 7 – Unregulated Power Supply Module Part 8 – Bringing It All Together, 6 and 12 Channel Mixers NOISE – What is it and Why? Part 1 – History and Basics Part 2 – Semiconductors and Valves Part 3 – Noise in Circuits Part 4 – Noise Measurement OUT & ABOUT And The Walls Came Tumbling Down Behind The Auto-Cue – TV News BT’s Best Kept Secret – The BT Museum Cellular Radio Networks – Cellnet Drives Home The Quality Message Channel Wars – Break Out! Curtain Up On High Tech – Miss Saigon Fasten Your Seat Belts – Virgin Atlantic Hands-On High Tech in London – Science Museum High Tech Comes to Coronation Street Mastering Sound Hits! – The Hit Factory Recording Studio PAGE 9

Title

Vol. No. Page

MOMI – Museum Of The Moving Image 12 Moving with the Times – London Transport Museum11 Oh-Not Such a Lovely War – Imperial War Museum 10 Take Off at the RAF Museum Hendon 11 Taken for a Ride at Alton Towers 11 The London Dungeon 10 The London Hippodrome – Maplin goes Bopping 9 The London Planetarium 10 The New High Tech Knights of the Road – The RAC 12 The Spitting Image Rubberworks 10 Tuning into Capital (Capital Radio) 11 PASSIVE ELECTRICAL COMPONENT GUIDE Part 1 – Resistors Part 2 – Capacitors Part 3 – Inductors, Transformers, Switches

60 48 42 57 55 44 36 43 69 45 49

40 40 40 68 32 32 40 40 48 32 40

12 62 12 63 12 64

51 69 57

POWER ELECTRONICS I N THEORY & PRACTICE Part 1 – The Diode, The SCR, The TRIAC etc. 12 Part 2 – Rectifiers, Regulators & Transformers (Power Supplies) 13 Part 3 – The Silicon Controlled Rectifier (SCR) 13 Part 4 – Trigger Pulse Generators, Unijunction Transistor13 Part 5 – Basic PUT Oscillator, UJ T Circuits 13 Part 6 – Regulated Battery Charger, LV DC Flasher etc.13 Part 7 – SCR Ring Counters, Bridge Type Temperature Controller etc. 13 Part 8 – The Triac, Phase Control, Zero Voltage Switching etc. 13

71

56

72 73 74 75 76

39 35 62 52 68

77

16

78

73

45 46 47 48 49 50 51

4 29 52 52 45 36 61

12 71 7 26 8 29

61 2 8

10 12 1 12 2 14 11 1 12 12 13 7 15 7 8 11 12 2 4 15 5 9 11 14 8 11 9 12

69 24 38 40 22 72 32 2 48 52 75 56 48 13 57 8 57 8 47 50 36 30 24 16 65 24 8 57

PREDICTING WAVESHAPES USING A COMPUTER Part 1 – The Resistor Capacitor Circuit 10 Part 2 – The Capacitor Resistor Circuit 10 Part 3 – The Resistor Inductor Circuit 11 Part 4 – Transformer Mutual Induction 11 Part 5 – The Resistor Inductor Capacitor Circuit 11 Part 6 – The Inductor Resistor Capacitor Series Circuit 11 Part 7 – The Rectifier Circuit 11 PROJECTS – Audio 10 Band Graphic Equaliser (Velleman) 1kW High Power MOSFET Amplifier – Part 1 * 1kW High Power MOSFET Amplifier – Part 2 1kW High Power MOSFET Amplifier Update (Instability – Mains Hum) 15W Power Amplifier Module 25W Stereo MOSFET Hi-Fi Amplifier * 50W Hi-Fi Power Amplifier 75W MOSFET Amplifier Bridging Module * 100W Mono/Stereo Amplifier 100W Pro-Amp Professional Amplifier 120W Combo Amplifier * 300W Mono MOSFET Power Amplifier 300W Stereo / 600W Mono MOSFET Amplifier 400W Mono/Stereo Amplifier 2 Way 16 Litre Loudspeaker System 3 Channel Sound to Light Unit 3 Way Loudspeaker System (20 Litre) 4 Way Speaker Switch 16 Way Audio Patchbay 7 LED Audio Power Meter (Velleman) A Simple Sweep Oscillator Active Cross-Over With Three Channel Amplifier Active Transformer DI Box ADA-Echo Digital Echo Unit ADA-Echo Digital Echo Unit Update Amplifier Monitor – Loudspeaker Protection * Animal Sounds Generator Audio & Video Modulator Audio Balanced Line Transmitter Audio Controlled Switch Audio Frequency Peak to Peak Millivoltmeter


41 64 3 67 6 87 56 1 70 71 83 28 105 27 30 52 69 7 15 106 19 37 47 93 30 49 38 67


Title

Vol. No. Page

Audio Frequency Sine/Square Wave Generator 12 63 Audio Spectrum Analyser (Velleman) 12 70 Auto-Waa Effects Unit 3 10 Car Audio Switching Power Supply Unit 10 46 Digital Playback Module 8 31 Digital Record & Playback Module 8 30 Digital Record & Playback Module – Corrigenda 8 31 Dual Input Amplifier Module – Velleman Modular Mixing System 12 63 Dual Stereo Fader Module – Velleman Modular Mixing System 12 61 Dual Stereo Tone Control Module – Velleman Modular Mixing System 12 60 Dynamic Noise Gate 9 40 Dynamic Range Processor 15 103 Earth Lift Box 15 102 Electromuse (Piezo Electric Tweeters) 11 49 Electronic Record and Playback Module 14 85 Envirosynth – Versatile Noise Generator 11 54 Fibre Optic Audio Link 5 20 Graphic Equaliser – Final Assembly Modules & Enclosure (Velleman) 13 74 Hi-Fi Loudspeakers & Enclosures 6 22 High Power Speaker Cabinet * 8 33 High Quality Power Supply * 10 42 Interfacing Computers to Consumer Electronics 13 73 K4000 Stereo Valve Amplifier – Part 1 – The Review (Velleman) * 11 51 K4000 Stereo Valve Amplifier – Part 2 – Assembly & Testing * 11 52 K4100 Digital Controlled Preamplifier (Velleman) 11 52 LED Power Meter 13 72 Light Sequencer Sound to Light Adaptor 15 99 Loudspeaker DC Protection Unit 13 82 Low Z Microphone Preamp 5 20 Mapmix – Six Channel Audio Mixer 3 11 Master & Headphone Module – Velleman Modular Mixing System 12 64 Metrobeat – Electronic Metronome 11 58 Microsonic Audio Booster 11 55 MIDI 8 Way Through Box 8 34 Millennium 4-20 20W Valve Power Amplifier – Part 1 13 73 Millennium 4-20 20W Valve Power Amplifier – Part 2 * 13 74 Millennium 4-20 Update 14 87 Mixing It – Part 1 – Module Specifications, Construction & Use 5 17 Mixing It – Part 2 – Module Specifications, Construction & Use cont. 5 18 Mixing It – Part 3 – Using The Modules 5 19 Monitor & Effects Module – Velleman Modular Mixing System 12 62 Newton Valve Preamplifier Phono Module * 14 85 Newton Valve Preamplifier PSU Module * 14 85 Newton Valve Preamplifier Tone Control Module 14 86 Newton Valve Preamplifier Update. Tone Control Unit 15 103 Noise Reduction Unit Mark 2 * 3 11 Passive Direct Injection Box 15 102 Peak Level Indicator * 1 1 Personal Stereo DNL (Dynamic Noise Limiter) 3 9 Pink Noise Generator 13 72 Play Along Mixer 5 17 Pre-Programmed Sound Generator (Velleman) 11 57 Psychedelic Wah Wah Pedal 13 82 Public Address System 6 21 Remote Controller for 25W MOSFET Amplifier * 1 4 ROM Expansion Module for Digital Speech Playback Module 9 35 Simple 4-to-1 Audio Mixer 15 105 Simple MIDI Merge Unit 13 77 ELECTRONICS AND BEYOND

24 32 52 16 64 48 67 48 56 16 72 32 15 78 32 16 37 68 19 48 32 64 8 56 24 72 4 56 54 2 65 16 8 41 24 36 48 19 16 49 48 9 64 36 40 10 32 22 36 60 53 24 16 47 14 56 56 46

Title

Siren Sound Generator SPO256 Speech Synthesiser * Steam Whistle/2-Tone Diesel Horn Stereo 100W Car Amplifier (Velleman) Stereo Dynamic Noise Reduction System SM-666 Stereo RIAA Correction Preamplifier Surround Sound Processor Syntom Drum Synthesizer TA-10 Stereo Preamplifier TDA2822M 650mW Stereo Amplifier The Walkamp – Add On Amplified Loudspeaker Three Gun Sound Generator Tunable Scratch Filter Two Way MIDI Switch Box * Ultrasonic Detector/Listening Device Universal Stereo Preamplifier Unregulated Power Supply Module – Velleman Modular Mixing System Voice Modulator Voice Vandal (Speech Processor) * Watt Watcher Western Sounds Generator PROJECTS – Automotive Electronics Automatic Rear Wiper Control Unit Car Alarm Ultrasonic Interface Car Audio Switching Power Supply Unit Car Battery Charge/Discharge Idle Monitor Car Battery Monitor Car Battery Monitor (Second Time Around) Car Burglar Alarm Car Digital Tachometer (Second Time Around) Car Headlight Alarm (Velleman) Car Headlights Delay Car Interior Light Controller Car Lamp Monitor Car Lights On Warning Indicator Car Parking Radar System (Velleman) Courtesy Light Controller Courtesy Light Extender Digital Miles-Per-Gallon Meter Digital Tachometer Frost Indicator (Velleman) Ignition Amplifier (Velleman) In-Car Amplifier PSU Intelligent Split Charge Unit Intermittent Wiper Controller (Velleman VE03D) Over Rev Indicator Rear Window Demister Aerial Rear Window Demister Timer Simple Car Test Probe Stereo 100W Car Amplifier (Velleman) Ultrasonic Car Alarm PROJECTS – Computer/M icroprocessor 16 Channel Logic Tester 16 Channel Logic Tester Update 24 Line Programmable I/O Card for the IBM PC & Compatibles Amstrad 8 Bit Input Port (CPC464/664/6128 Computers) Amstrad Expansion System – Part 1 (CPC464/664/6128 Computers) Amstrad Expansion System – Part 2 (CPC464/664/6128 Computers) * ASCII Encoded Keyboard Computer Interface Board Dragon 32 ExtendiPort Dragon 32 Input/Output Ports Dragon 32 RS232/Modem Interface *


Vol. No. Page

15 9 13 11 9 14 9 9 8 8 12 9 2 10 14 14

104 36 83 55 40 90 36 38 33 34 65 36 6 46 90 91

34 48 8 24 56 52 16 48 56 4 24 77 16 4 12 76

12 15 14 7 14

65 96 89 27 92

53 9 48 39 4

13 74 13 79 10 46 13 78 1 1 9 37 1 4 9 37 12 65 14 95 13 82 13 80 11 50 12 62 15 100 10 44 1 2 14 90 12 60 12 68 14 84 13 81 13 75 15 102 15 96 15 98 13 76 11 55 4 15

4 52 16 4 16 56 20 65 36 48 33 24 8 24 6 36 52 36 77 53 56 44 56 40 64 14 59 24 40

4 16 9 37

54 62

10 43

24

5 20

48

5 18

36

5 5 14 3 2 2

19 17 88 10 8 8

20 42 40 3 23 54

PAGE 10

Title

Vol. No. Page

EPROM Programmer Card Extra High Resolution Graphics for the ZX81 Full Size Keyboard for ZX81 Microcomputer * IBM Golfball Printer Driver – Part 1 IBM Golfball Printer Driver – Part 2 * IBM PC Centronics Input Port Interfacing Computers to Consumer Electronics Keypad for the Z80 Light Pen for Atari, VIC20 & Commodore 64 Logic Pulser Mains Tx/Rx Driver Module Motherboard for the BBC Micro Oric 1 Maplin Modem Interface Oric Talk Back Speech Synthesiser * Packet Radio Modem Parallel Interface Relay Card PC Opto-Isolator Card for the IBM PC and Compatibles PC Prototyping Card for the IBM PC and Compatibles * PC Relay Card for the IBM PC & Compatibles PC Sound Generator PC Teletext Decoder Interface Card PC Teletext Decoder Tuner Module PC Weather Station * PC Weather Station Software Update PlC16C84 Programmer 44RM9011 Serial to Parallel Converter Module RS232 Serial Line Tester RS232 Serial Line Tester Issue 89 Update RS232 to 8 Bit Digital 110 Converter RS232 to TTL Converter RS232 to TTL Converter MkII Serial to Parallel Converter Sharp MZ-80K Serial Interface * Sound Generator for the ZX81 Spectrum Easyload * Spectrum I/O Controller Spectrum Keyboard Spectrum Parallel/Serial Port Using Temperature Module FE33L (Interfacing to a PC) VIC 20 Extendiboard VIC 20 RS232 Interface * VIC 20 Talk Back Speech Synthesiser * Video Digitiser Z80 CPU Module Z80 Development System Z80 Development System (Second Time Around) Z80-B CPU Card (Frame Store – Part 1) ZX Spectrum RS232/Modem Interface * ZX Spectrum RS232/Modem Interface Modifications ZX81 Extendi-RAM ZX81 Input-Output Port ZX81 Modem Interface * ZX81 Talk Back Speech Synthesiser * ZX81 TV Sound & Normal-Inverse Video PROJECTS – Control 1 to 300 Second Timer 1.2kW Power Controller 2.8kW Power Controller 15 Channel Infra-Red Transmitter 15 Channel Infra-Red Remote Control Receiver (Velleman) 2-Wire 8-Channel Communication Transmitter and Receiver Automatic Rear Wiper Control Unit PAGE 11

8 3 1 4 5 13 13 6 3 3 4 3 3 3 13 11

31 9 3 16 17 77 73 22 12 9 16 11 10 9 78 57

64 46 2 2 25 30 64 28 38 59 44 27 37 24 48 46

12 66

8

12 67 12 65 11 58 14 94 14 94 12 70 15 100 15 105 11 49 14 89 15 100 15 97 3 9 8 31 11 49 4 15 2 5 3 10 4 14 3 9 4 16

24 8 24 24 40 8 44 32 32 32 76 40 22 40 32 18 50 42 8 5 37

12 3 2 2 15 4 15 11 6 2 3 3 1 2 2 2

71 9 7 6 96 15 97 58 23 8 11 9 4 7 6 6

28 13 2 2 40 2 4 56 10 60 29 63 56 22 8 50

9 9 3 11

38 40 10 59

52 4 12 56

12 69

72

13 77 13 74

60 4

Title

Vol. No. Page

Car Interior Light Controller Day/Night Thermostat Digital Central Heating Controller Digital Enlarger Timer/Controller * Drill Speed Controller Four Channel Running Light Galactic Timer – Part 1 – The Timer Card * Galactic Timer – Part 2 – The Relay Card Galactic Timer – Part 3 – The Triac Card Hi-Low Switch Hobbyists’s Temperature Controller Infra-Red Door Lock * Infra-Red Remote Control Extender Infra-Red Switch Interfacing Computers to Consumer Electronics Intermittent Wiper Controller (Velleman VE03D) Light Level Switch Liquid Level Controller Mains Controller for 8 Channel Fluid Detector Model Train Signal Lights Controller Multi-Purpose 555 Timer Card Multi-Strobe Interface Pattress Mounting Dimmer Switch PWM Drill Speed Controller PWM Motor Drive Module * Remote Power Switch SA-218 Intelligent Keypad Slave Flash Trigger 22Sound Activated Trigger Steam Whistle/2-Tone Diesel Horn Stepper Motor Driver Temperature Controller * Three Mini Model Train Projects – Track Circuiting, Automatic Loop, Head and Tail Lamps (Update) Tungsten Lamp Surge Controller TY41 MKV Infra-Red Remote Control Switch Universal Timer Universal Timer Module Versatile Automatic Lamp Dimmer Zero Crossing Opto Switch *

13 82 14 84 2 5 2 7 15 104 15 103 10 44 10 45 10 46 8 32 5 17 12 68 13 72 12 71 13 73 13 75 9 37 15 105 4 13 14 86 12 69 15 104 15 103 13 81 3 12 8 34 8 32 15 98 14 88 13 83 5 18 10 43

33 73 44 50 24 56 8 56 24 24 37 12 16 21 64 56 48 24 34 20 40 9 9 16 44 46 32 22 32 8 35 8

14 6 8 1 14 14 10

84 21 33 1 86 87 41

30 58 64 38 60 56 56

PROJECTS – Fibre Optic & Laser 10 Channel Fibre Optic Digital Multiplexer 2mW Laser and Controller Digital Data Link Module Fibre Optic Audio Link Laser Pointer

11 8 11 5 15

48 29 47 20 103

48 40 48 37 24

PROJECTS – Funtronics Project No 1 – Bulb and Fuse Tester Project No 2 – Transistor Tester Project No 3 – Water Indicator Project No 4 – Light-Dark Indicator Project No 5 – The Flasher Project No 6 – Electronic Siren Project No 7 – Pet Communicator Project No 8 – Decision Maker Project No 9 – Morse Code Communicator Project No 10 – Music Maker

11 11 11 11 11 11 11 11 11 11

48 49 50 51 52 53 54 55 56 57

16 56 76 32 48 32 40 68 48 40

PROJECTS – General Christmas Star and Zero Crossing Opto Switch Christmas Tree Light Sequencer Colour Snap Game Digital Alarm Clock Disco Partylite – 3 Channel Light Controller Display Driver Module (LM3914/15/16) Door Chime * Doorbell For The Deaf Dual Electronic Dice (Velleman)

11 14 1 15 7 4 14 2 12

48 84 1 99 25 14 95 8 61

32 9 18 56 18 46 5 42 40



Title

Eight Channel Fluid Detector Electronic Digidice Electronic Memo Pad Enlarger Exposure Meter * Fest-O-Meter Flickering Christmas Candle & Lantern Forged Bank-Note Detector Games Timer General-Purpose Stroboscope Module Interactive Doorbell Kojak Siren Large 7 Segment Numeric Display Modules (Velleman VF01B & VE63T) LED Christmas Tree Live Wire Game Multi Colour Pendant Multi-Strobe (Strobe Light) * Multi Strobe Part 2 - The Sequencer Pass The Bomb! Electronic Pass The Parcel Priority Quiz Buzzer/Indicator Quiz Game Scorer Reusable Fuse Soldering Iron Station * The Breeze – Air Ioniser The ZX81 and Your Boat – Part 1 The ZX81 and Your Boat – Part 2 Torch Finder – Rechargeable Torch & Emergency Light Weather Station Wheel of Fortune – Electronic Roulette Wheel Wind Speed & Direction Indicators Xenon Flash Tube Driver * Xmas Star

Vol. No. Page

3 8 14 3 12 13 13 1 12 14 15

11 34 87 11 60 72 77 1 68 91 101

51 24 9 24 4 4 4 24 44 8 32

13 11 13 1 14 15 1 13 14 13 11 9 3 4

74 48 78 1 92 100 1 72 84 79 59 35 12 13

53 4 16 25 36 48 12 32 24 20 8 40 2 26

12 8 8 8 3 10

66 33 29 31 11 41

40 8 16 8 21 32

PROJECTS – Model Control 4 Channel PWM Controller * Control-A-Train PWM Controller Digital Multi-Train Controller * Digital Model Train Controller Mk II Low Power Radio Control System * Model Train Automatic Loop Control Model Train Chuffer * Model Train Head & Tail Lamp Control Model Train Receiver Mk II Model Train Signal Lights Controller Model Train Track Circuiting Remote Control for Digital Multi-Train Controller * Servo & Driver Module Servo Tester Train Effects Generator

4 4 1 12 4 2 13 2 12 14 2 1 3 6 15

14 14 2 71 13 5 79 5 71 86 5 3 11 22 106

42 54 2 4 43 60 4 60 44 20 60 16 45 22 61

PROJECTS – Musical 120W Combo Amplifier * Active Transformer DI Box ADA-Echo Digital Echo Unit ADA-Echo Digital Echo Unit Update Computadrum Earth Lift Box Electronic Volume Pedal Electromuse (Piezo Electric Tweeters) Guitar Equaliser Guitar Headphone Amplifier Guitar Phantom Power Supply Unit Loudspeaker DC Protection Unit Melody Maker Metrobeat – Electronic Metronome MIDI Test Box Musical Announcer – Doorbell with a Difference * Passive Direct Injection Box

1 15 5 9 3 15 15 11 4 14 15 13 11 11 14 4 12

1 106 19 37 12 102 99 49 15 86 104 82 56 58 94 13 67

2 50 36 30 20 15 16 78 54 4 40 56 16 16 6 22 32


Title

Passive Direct Injection Box Programmable Metronome Psychedelic Wah Wah Pedal Simple Melody Generator * Simple MIDI Merge Unit Sound Generator for the ZX81 Synchime * Three Tone Chime (Velleman) UM34811A Multi-Tune Generator * PROJECTS – Power Supplies & Batteries +/-15V Regulator Kit 12V DC to 230V AC Inverter (Velleman VF35Q) 12V DC to 240V AC Converter 12/24V to 220V Inverter * 220/240V AC 100W Inverter 8W 12V Fluorescent Tube Driver Car Audio Switching Power Supply Unit Cautious Ni-Cd Charger * Graphic Equaliser Power Supply & Switching Unit (Velleman VE45Y) High Quality Power Supply * Intelligent Ni-Cad Battery Charger Mark II Intelligent Ni-Cd Battery Charger Intelligent Split Charge Unit * Laboratory Power Supply 0-30V 10A Lead Acid Battery Charger Modules 6V and 12V Light Sensitive Battery Saver Low Cost Power Supply Unit – Fixed/Variable up to 1A * Mains Power Conditioner Mains Power Switch Rapid Charger – Track Side Charger for Ni-Cd Racing Packs Simple Stabilised Valve Power Supply Slow Charger for 7.2V & 8.4V Ni-Cd Packs The Maplin MiniLab, Power Supply, Logic I/O & Oscillator Uninterruptible Power Supply (Using 12V DC to 240V AC Converter) Unregulated Power Supply Module – Velleman Modular Mixing System Versatile Power Supply – 5V, ±15V, 3-20V Voltage Regulator Kits

PROJECTS – Radio Communications 2-Metre 30 Watt Amplifier 2-Metre FM Receiver 20 Metre 20 Watt Linear Amplifier * 20 Metre All Mode Receiver (CP13P) 20 Metre CW Transmitter (CP09K) 418MHz Encoded FM Receiver * 418MHz Encoded FM Transmitter 80 Metre Amateur Receiver * Active Aerial & Tuning Unit Aerial Activator AFSK (Audio Frequency Shift Keying) Generator AR-1 Aircraft Band Radio Receiver (CP17T) Beginners AM (Amplitude Modulated) Radio CMOS Crystal Calibrator * CW Filter Direct Conversion Short Wave Receiver Dxer’s Audio Processor Electronic CW Keyer Maplin Ranger – 160m Receiver * Maplin TU1000 RTTY Terminal


Vol. No. Page

15 7 13 7 13 2 2 11 7

102 26 82 26 77 5 8 58 26

32 53 16 24 46 50 2 4 35

15 13 12 15 2 3 10 3

105 78 66 98 5 10 46 11

12 64 64 29 20 18 16 36

13 10 15 13 13 11 11 15

73 42 100 79 81 58 53 96

77 32 22 35 44 40 48 72

11 47 14 91 14 93

64 24 42

7 25 12 68 7 25

45 39 29

12 66

24

12 66

64

12 65 9 39 15 106

53 14 11

14 13 13 13 13 13 13 3 5 13 9 13 10 2 14 7 2 14 10 3

48 24 62 44 44 56 47 4 2 8 48 40 48 39 50 2 44 48 48 6

85 83 81 76 76 83 83 10 19 80 39 75 42 7 93 28 7 91 43 12

PAGE 12

Title

Vol. No. Page

Morse Code Practice Oscillator 7 Morse Decoder (Velleman) * 11 Micron III MSF Rugby Clock (Mk 3) 14 Notch Filter 6 Packet Radio Modem * 13 RTTY FSK Demodulator – Part 1 8 RTTY Serial Format Translator 9 RTTY Sharp Audio Filter 8 Rugby Clock Receiver 11 Shortwave Regenerative Receiver 14 SSB Filter 14 Superscan (HF/VHF/UHF Radio Scanner) * 14 SW TRF Receiver (Exploring Radio – Part 5) 8 Synthesised Digital VHF/FM Tuner 12 TDA7000 FM Radio * 3 TDA7000 FM Radio MkII 7 TDA7000 FM Radio MkII – Modifications for Stereo Operation 8 TRF Marine Band Receiver (Exploring Radio – Part 8) 8 TRF MW Reflex Receiver (Exploring Radio – Part 7) 8 TRF Receiver (Exploring Radio – Part 2) 7 UHF Prescaler 14 VHF Crossed Dipole Aerial 14 VHF Preamplifier 6 VHF/UHF Preamplifier * 13 Weather Satellite Down Converter – Part 1 6 Weather Satellite Down Converter – Part 2 * 6 Weather Satellite Prediction Table 6 Weather Satellite Receiving System – Part 1 – Receiver 5 Weather Satellite Receiving System – Part 2 – Decoder * 5

27 53 88 21 78 32 35 33 47 92 94 89 29 67 9 27

46 72 8 35 48 16 24 24 8 52 73 8 68 8 42 2

30 32 31 26 94 85 24 81 22 23 24

29 37 44 41 56 76 20 32 46 35 30

18

2

20

2

4 14

16

4 15 4 14

17 36

PROJECTS – Robotics

Trundle – The Channel Four Robot Zero 2 Ins and Outs – Interfacing to Various Computers Zero 2 Robot PROJECTS – Security/Protection 418MHz Radi-Call Receiver 418MHz Radi-Call Transmitter 6 Channel Burglar Alarm Panel Anti Theft Device Automatic Floodlight Controller Bicycle Alarm Car Alarm Ultrasonic Interface Code Lock * Compuguard Vehicle Alarm – Part 1 * Compuguard Vehicle Alarm – Part 2 * Doppler Module Control & Interface Unit Electronic Watchdog (Velleman) Explosive Gas Alarm * 1C Shortwave Receiver 1 ~.- 1 02 10 418MHz Radi-Call Receiver 418MHz Radi-Call Transmitter Crystal Radio Set External Horn Programmable Timer External Horn Programmable Timer – Update Fridge Check G PS Development System - Part 1 G PS Development System - Part 2 Home Security System * Infra-Red Code Lock (Velleman) Infra-Red Proximity Detector (Second Time Around) Infra-Red Door Lock * Infra-Red Movement Detector * Infra-Red Proximity Detector * PAGE 13

15 15 6 13 4 11 13 2 9 10 1 11 4

102 101 21 80 16 49 79 8 40 41 3 53 13

48 16 10 44 14 8 52 12 9 8 9 4 2

15 15 15 2 6 13 15 15 1 11 11 12 3 5

102 101 100 5 24 76 97 102 2 56 54 68 9 20

48 16 90 40 28 12 24 56 38 4 48 12 19 20

Title

Vol. No. Page

Keycode Lock (Velleman VE76H) Loop Alarm * Loudspeaker DC Protection Unit Low Cost Home Alarm Mains Failure Alarm Maplin RTX3 Radar Doppler Intruder Detector Panic Button (for use with Maplin Home Security System) Peep Alarm Reusable Fuse Rugby Clock Superhet Receiver Siren Sound Generator * Superscan Mark II Active Aerial The Ultrasonic Intruder Detector Vehicle Intruder Alarm VHS Video Recorder Alarm Wireless Alarm Upgrade

13 12 13 10 14 1

80 70 82 45 95 3

71 24 56 40 40 6

2 11 13 15 7 15 1 10 6 14

5 51 79 99 26 106 4 46 24 89

16 48 20 32 44 21 51 56 59 24

PROJECTS – Telecommunications 32 Line Expansion for Maplin Digi-Tel Telephone Exchange AutoRing – Telephone Ring Simulator Call Code Switch Maplin Digi-Tel Telephone Exchange * Telecommunications Amplifier (Velleman) Telephone Bell Repeater The Maplin Modem *

3 12 14 1 12 13 2

10 61 92 4 60 83 5

48 24 12 2 48 40 2

PROJECTS – Test & Me asurement 41/2 Digit LCD Counter 41/2 Digit LCD Counter (Second Time Around) A Simple Sweep Oscillator * Audible TTL Logic Probe Audio Frequency Peak to Peak Millivoltmeter Audio Frequency Sine/Square Wave Generator Car Battery Charge/Discharge Idle Monitor Christmas Tree Lights Continuity Tester CMOS Logic Probe CMOS Logic Probe Digital Capacitance Meter Digital Storage PC Oscilloscope . Discriminating Continuity and Leakage Tester Discriminating Continuity Tester Flash Meter * Frequency Meter Adaptor Fridge Check H14/H14DL Humidity Sensors In-Situ Transistor Tester * Infra-Red Remote Control Tester K7000 Signal Tracer/Injector (Velleman) L/C Meter Adaptor Let’s Get Digital with the TTL Test Unit Live Wire & Mini Metal Detectors Live Wire Detector Logic IC Tester Logic Probe Low Cost 10MHz Counter Low Cost Audio Waveform Generator Low Cost Bench Amplifier (500mW) Low Resistance Continuity Tester Maplin Moisture Meter Mini Metal Detector Multi-Mode Digital Stopwatch * Noise Generator Nuclear Radiation Monitor Pink Noise Generator Programmable Pulse Generator Programmable Timer/Clock Module Signal Tracer

6 11 2 12 12 12 13 13 1 10 6 15 14 9 4 3 13 11 12 10 11 13 13 11 4 8 2 10 11 12 11 2 7 1 7 6 13 12 11 9

22 55 7 66 67 63 78 72 1 46 23 101 87 39 13 9 76 55 64 44 54 82 78 48 14 32 8 45 48 64 53 6 25 2 27 24 72 61 50 39

35 40 8 54 57 24 4 44 20 32 46 40 24 5 12 10 12 48 16 24 67 49 32 64 2 40 48 48 24 8 16 40 32 16 56 2 60 8 48 4



Title

Simple Car Test Probe SM-43 Digital Panel Meter 0-200mV Temperature Gauge Temperature Module Expansion Temperature Monitor Tester for Domestic Electrical Appliances Tetraprobe – 4 in 1 Tester The 8 Digit Frequency Counter * The Maplin MiniLab, Power Supply, Logic I/O & Oscillator The Maplin MiniLab, Power Supply, Logic I/O & Oscillator (2nd Time Around) Transistor Tester Using Temperature Modules FE33L, FP64U, YT99H, YU00A Wide Range Lightmeter Wiring Allocation Tester PROJECTS – Video & TV Audio & Video Modulator Audio/Video Generator CCD Camera TV Modulator IUpdated Circuit) CCD TV Camera Modulator Frame Store – Part 1 – Z80-B CPU Card Frame Store – Part 2 – High Resolution Card, PSU, Motherboard etc. * Infra-Red Remote Control Extender Infra-Red Video Link – Part 1 – The Transmitter Infra-Red Video Link – Part 2 – The Receiver Monochrome CCD Camera NICAM Stereo TV Tuner Unit – IR Remote Control System NICAM Stereo TV Tuner Unit – Part 1 NICAM Stereo TV Tuner Unit – Part 2 NICAM Television Tuner * PAL Colour Encoder Television Effects Unit The Maplin Video Box The Maplin Video Box (March 92) Modification TV Colour Bar Generator VHF/UHF Preamplifier * VHS Video Recorder Alarm Video Amplifier * Video Digitiser Video Digitiser Video Dubber Switching Amplifier Video Kaleidoscope Video Line Selector PROJECT FAULT FINDING Part 1 – Checking, Component Testing Part 2 – Initial Checks, Voltage Checks Part 3 – Signal Injection & Tracing Part 4 – Using Logic Probes & Pulsers Part 5 – Using Your Oscilloscope to the Full

Vol. No. Page

13 8 1 7 11 7 10 1

76 31 1 25 48 25 42 4

59 56 58 2 8 40 4 40

2

8

16

12 66 9 39

24 6

12 71 12 71 10 45

28 41 8

8 9 15 13 6

30 37 98 75 23

65 8 4 8 10

6 13 11 11 11

24 72 51 52 50

40 16 16 32 16

10 9 9 9 8 10 11 11 13 13 6 10 5 15 8 15 14

41 38 39 36 29 42 51 57 77 81 24 44 17 96 30 96 95

24 16 16 32 48 8 64 21 20 32 59 48 12 40 40 16 24

12 14 15 16 18

47 50 44 50 52

PULSES ON LINES – A Beginners Guide Part 1 – A Circuit Around the Fields, Transmission Lines – Ideal & Real 13 77 Part 2 – Bouncing with Energy, Pulse Transmission 13 78 Part 3 – Terminal Cases, Lumped or Distributed 13 79

39 45 55

RS232 SERIAL PORT EXPANSION SYSTEM Part 1 – Intelligent Motherboard * Part 2 – Open Collector Output Card Part 3 – Analogue to Digital Converter Card Part 4 – Add-on Relay Card Part 5 – Opto Coupler Input Card Part 6 – Digital to Analogue Converter Card Part 7 – 8 to 1 Channel Analogue Multiplexer Card

72 64 65 64 64 72 40


3 4 4 4 5

11 12 12 12 12 12 12

59 60 61 62 63 64 65

Title SECOND TIME AROUND 100W MOSFET Power Amplifier 41/2 Digit LCD Counter Car Battery Monitor Car Digital Tachometer CMOS Logic Probe Courtesy Light Controller Dynamic Noise Gate Infra-Red Proximity Detector Intelligent Ni-Cad Battery Charger Mark II Syntom Drum Synthesizer The Maplin Minilab, Power Supply, Logic I/O & Oscillator Vehicle Intruder Alarm Z80 Development System

Vol. No. Page

41 55 37 37 46 100 40 54 100 38

48 40 56 65 32 6 72 48 22 48

12 66 10 46 11 58

24 56 56

13 76 13 77 13 78

20 54 24

SOUND REINFORCEMENT SYSTEMS FOR GIGGING BANDS Part 1 Cables, DI Boxes, Mains wiring etc. 15 102 Part 2 - Mixing Desks, Typical Set-ups 15 103

29 27

SEMICONDUCTOR PROCESSING Part 1 – Refining of the Raw Materials * Part 2 – Production Techniques Part 3 – From Die to Device

10 11 9 9 10 15 9 11 15 9

SQUARE 1 – A First Course in the Theory & Practice of Electronics Part 1 – Introduction, Components, Units & Magnitudes etc. 9 Part 2 – Electric Current, Series Parallel Circuits, Decibel etc. 9 Part 3 – Resistance, Reactance & Impedance, Phase etc. 9 Part 4 – Semiconductor Diodes 9 Part 5 – Analogue v. Digital Systems, Digital Logic, Boolean Algebra 10 Part 6 – Using Digital Logic to Perform Arithmetic Functions 10 Part 7 – Buses, Microprocessors, Address Decoding & Memory 10 Part 8 – Sine Wave Oscillators 10 Part 9 – Phase Shift & Wien Bridge Oscillators 10 Part 10– Relaxation & Square Wave Oscillators 10 Part 11– Clock Oscillators, Crystal Oscillators & Monostables 11 Part 12– Positive & Negative Feedback 11

37

16

38

2

39 40

8 53

41

36

42

18

43 44 45 46

32 27 18 8

47 48

56 19

13 79 13 80 13 81

46 66 52

SWITCHED MODE POWER SUPPLIES Part 1 – I ntroduction, Linear v. Switched 9 37 Part 2 – Flyback & Boost Regulators etc. 9 38 Part 3 – Push Pull Converter, Half & Full Bridge etc. 9 39

53 12 44

THE FASCINATION OF VINTAGE RADIO Part 1 – What’s It All About? Part 2 – Widening Horizons Part 3 – Devices, Instruments & Data Part 4 – Preservation & Restoration

60 61 62 63

8 16 72 32

11 59 12 60

4 73

12 61

60

SURROUND SOUND – Fad or Fancy? Part 1 – The First Four Channels Part 2 – Multichannel and Ambisonics Part 3 – Dolby Surround and THX

THE HISTORY OF AMATEUR RADIO Part 1 – Foundations Laid Part 2 – New Licences, Atlantic Contacts etc. Part 3 – War Years, New Licences, Television, VHF Licence etc.


12 12 12 12

PAGE 14

Title

Vol. No. Page

THE HISTORY OF COMPUTERS Part 1 – The First Attempt: The Abacus Part 2 – The Second Attempt: The Slide Rule Part 3 – The Third Attempt: The Pascaline – Mechanisation Arrives Part 4 – The Fourth Attempt: Leibniz’s Calculator: Improved Mechanisation Part 5 – The First Computer Scientist: Babbage Part 6 – The Early Theoreticians: Boole and J evons Part 7 – Other Men, Other Machines, 1870 to 1940 Part 8 – ENIAC and its Creators Part 9 – The Reduction in Size of Computer Hardware Part 10– The Future – Towards the Brain THE INTERNET Part 1 - What is the Internet Part 2 - Review of Internet Providers Part 3 - The World Wide Web Part 4 - Business on the Internet Part 5 - The Future of the Internet THE OSCILLOSCOPE IN ACTION Part 1 – The Cathode Ray, Screen, Timebase etc. Part 2 – AC/DC Voltage/Current Measurement Part 3 – Time, Frequency & Phase Measurement Part 4 – Lissajous Figures, Circular Timebase, Modified Ring Pattern THE STORY OF RADIO Part 1 – The Early Years Part 2 – The First Decade Part 3 – The Birth of the Valve Part 4 – The First World War Part 5 – The 1920s Part 6 – The Golden Age Part 7 – The Second World War Part 8 – The Post War Years

12 63 12 64

30 14

12 65

46

12 12 12 12 12

66 67 69 70 71

44 46 78 5 50

13 72 13 73

70 22

15 15 15 15 15

73 72 35 72 36

96 97 98 99 100

11 53 11 54 11 55

35 36 13

11 56

28

5 5 5 5 6 6 6 6

17 18 19 20 21 22 23 24

31 22 26 44 31 38 54 37

USING AUDIO PREAMP ICs Part 1 – LM381/LM382/LM387 Integrated Circuits 13 74 Part 2 – LM387/TDA3410/MC3340P/NE570/571 Integrated Circuits 13 75

20

VALUE ADDED INTERNET SERVICES Part 1 - Internet Access Part 2 - Adding More Value Part 3 - On-Line Services - Compuserve Part 4 - On-Line Services - AOL, MSN

76 74 74 64

15 15 15 15

VALVE TECHNOLOGY – A Practical Guide Part 1 – A Little History, Thermionic Emission, Diode & Triode Valves etc. 12 Part 2 – Introducing the Triode Amplifier 12 Part 3 – Design of a Triode Amplifier, The Cathode Follower Part 4 – The Tetrode Valve, Pentode Valve 12 Part 5 – The Pentode Amplifier Equivalent Circuit & Voltage Amp Design 12 Part 6 – Preamplifier, Equaliser & Driver Circuits 13 Part 7 – Triode v. Pentode, Output Transformer, Hi-Fi Amplifiers 13 VELLEMAN KITS 10 Band Graphic Equaliser 12V DC to 230V AC Inverter (Velleman VF35Q) 15 Channel Infra-Red Remote Control Receiver 7 LED Audio Power Meter PAGE 15

12 13 12 12

101 102 103 104

67 68

28

48 36

70

57

71 72

66 47

73

57

71 78 69 69

61 64 72 57

Title

Vol. No. Page

8 to 1 Channel Analogue Multiplexer Card (RS232 Expansion System) Add-on Relay Card (RS232 Expansion System) Analogue to Digital Converter Card (RS232 Expansion System) Audio Spectrum Analyser Car Headlight Alarm Car Parking Radar System Digital to Analogue Converter Card (RS232 Expansion System) Dual Electronic Dice Dual Input Amplifier Module (Modular Mixing System) Dual Stereo Fader Module (Modular Mixing System) Dual Stereo Tone Control Module (Modular Mixing System) Frost Indicator Graphic Equaliser – Final Assembly (Modules & Enclosure) Graphic Equaliser Power Supply & Switching Unit (Velleman VE45Y) Ignition Amplifier Intermittent Wiper Controller (Velleman VE03D) Keycode Lock (Velleman VE76H) Large 7 Segment Numeric Display Modules (Velleman VF01B & VE63T) Master & Headphone Module (Modular Mixing System) Monitor & Effects Module (Modular Mixing System) Open Collector Output Card (RS232 Expansion System) Opto Coupler Input Card (RS232 Expansion System) Unregulated Power Supply Module (Modular Mixing System) VIDEO PROCESSING SYSTEMS Part 1 – Introduction, Picture Composition, Synchronisation, Interlacing etc. Part 2 – Deriving the Colours, NTSC, PAL, SECAM Part 3 – Synchronisation, Colour Decoding, Field Sequences, Test Signals Part 4 – Video Recording, Digital TB Correction, Video Mixing & Sync. Part 5 – Video Tape Editing, Standards Conversion, Genlock etc. Part 6 – Digital Timebase Correctors, Frame Stores WAVEFORM GENERATOR CIRCUITS Part 1 – Wien Bridge & Twin-T Part 2 – Sine Wave Generators Part 3 – Square Wave Generators Part 4 – Pulse Generators Part 5 – Triangle, Sawtooth, White & Pink Noise, Crystal Controlled Oscillators WORKING WITH OP-AMPS Part 1 – The Ideal Op-Amp, 741, Offset Null, CMRR, Power Supplies etc. Part 2 – Astable, Bistable & Monostable Multivibrators Part 3 – The Hysteresis Oscillator, Twin Tee and Wien Bridge Oscillator Part 4 – Active Filters Part 5 – Peak Signal Detector, Linear Rectifier, Linear Ohmmeter etc. Part 6 – Sound Generators & Alarms


12 65 12 62

40 64

12 12 12 12

61 70 65 62

65 32 36 24

12 64 12 61

72 40

12 63 12 61

48 56

12 60 12 60

16 77

13 74

68

13 12 13 13

73 68 75 80

77 53 56 71

13 74

53

12 64 12 62

65 48

12 60

64

12 63

64

12 65

53

11 52 11 53

16 24

11 54

56

11 55

36

11 56 11 57

8 54

11 11 11 12

57 58 59 60

32 69 43 44

12 61

50

1

2

13

1

3

56

1 2

4 5

12 18

2 2

6 7

48 42


APPENDIX A – M AGAZINE VOLUM E & NUM BER vs. PERIOD COVERED Vol. No. Period Covered 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 8 8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

December 81 / February 82 March 82 / May 82 June 82 / August 82 September 82 / November 82 December 82 / February 83 March 83 / May 83 June 83 / August 83 September 83 / November 83 December 83 / February 84 March 84 / May 84 June 84 / August 84 September 84 / November 84 December 84 / February 85 March 85 / May 85 June 85 / August 85 September 85 / November 85 December 85 / February 86 March 86 / May 86 June 86 / August 86 September 86 / November 86 December 86 / February 87 March 87 / May 87 June 87 / August 87 September 87 / November 87 December 87 / February 88 March 88 / May 88 June 88 / August 88 September 88 / November 88 December 88 / January 89 February 89 / March 89 April 89 / May 89 June 89 / July 89 August 89 / September 89

Vol. No. Period Covered 8 9 9 9 9 9 9 10 10 10 10 10 10 11 11 11 11 11 11 11 11 11 11 11 11 11 12 12 12 12 12 12 12

34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66

Vol. No. Period Covered

October 89 / November 89 December 89 / January 90 February 90 / March 90 April 90 / May 90 June 90 / July 90 August 90 / September 90 October 90 / November 90 December 90 / January 91 February 91 / March 91 April 91 / May 91 J une / J uly 91 August / September 91 October 91 November 91 December 91 J anuary 92 February 92 March 92 April 92 May 92 J une 92 J uly 92 August 92 September 92 October 92 November 92 December 92 J anuary 93 February 93 March 93 April 93 May 93 J une 93

12 12 12 12 12 13 13 13 13 13 13 13 13 13 13 13 13 14 14 14

67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

Vol. No. Period Covered 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 15 15 15 15

J uly 93 August 93 September 93 October 93 November 93 December 93 J anuary 94 February 94 March 94 April 94 May 94 J une 94 J uly 94 August 94 September 94 October 94 November 94 December 94 J anuary 95 February 95

87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106

March 95 April 95 May 95 J une 95 J uly 95 August 95 September 95 October 95 November1995 December 1995 J anuary 1996 February 1996 March1996 April 1996 May 1996 J une 1996 J uly1996 August 1996 September 1996 October1996

DID YOU MISS US? If you ever want to lay your hands on an elusive issue of Electronics – The Maplin Magazine, then we can help! Many editions are still available, as back issues. Where issues are out of print, details of projects that are still current can be found in Maplin Projects Books and Best of Maplin Projects Books. Copies of back issues(subject to availability) can be obtained from Maplin Stores countrywide; by Mail Order, or by calling the Credit Card Hotline on 01702 554000. If you are not sure which issue or projects book you require, call Customer Services on 01702 554002. Photocopies of out of print feature articles are available; a charge will be made, dependent on the length of the article to be copied – call Customer Services for details.

APPENDI X B – M AGAZINE KIT CODES vs. CONVENTIONAL ORDER CODES (Issue 90 onwards) Order Code

Magazine Code

Title/Item

VE01B VE23A LT85G LT91Y VE22Y RU90X LT81C LT84F RU61R VE86T LT95D LU10L LU13P LT96E LT97F LT98G LT49D LU14Q LU15R LU00A LU04E LU16S LU03D LU02C LU06G VF71N LU08J LU01B LT99H LT62S VX16S LT37S LP47B LP57M VF62S

90013 90014 90008 90011 90022 90018 90019 90023 90032 90029 90031 90043 90045 90033 90035 90037 90050 90055 90057 90047 90083 90063 90059 90077 90073 95010 90065 90053 90079 95018 95011 95020 95027 95015 95013

K2625 Digital Tachometer K2573 Stereo RIAA Preamp Ultrasonic Frequency Translator HT2860 Siren Sound Generator K2572 Universal Stereo Amp CW-7 Electronic Keyer Mains Power Conditioner Interactive Doorbell MFJ SW Regenerative Receiver K2650 Call Code Switch HT82207 Sound Generator Mains Power Switch CW Filter HT82231 Sound Generator PC Teletext Decoder I/F PC Teletext Decoder Tuner MIDI Test Box UHF Prescaler SSB Filter Mains Failure Alarm Car Headlights Delay Door Chime Video Line Selector Voice Modulator Video Kaleidoscope Video Digitiser Rear Window Demister Aerial Z80 Development System GPS Development System Hardware . RS232 to 8 Bit Digital I/O Converter K7100 Digital Multimeter Kit CCD Camera TV Modulator Rear Window Demister Timer Slave Flash Trigger 12/24V to 220V Inverter


Issue

90 90 90 90 91 91 91 91 92 92 92 93 93 93 93 94 94 94 94 95 95 95 95 96 96 96 96 97 97 97 97 98 98 98 98

Order Code

Magazine Code Title/Item

LU17T LT94C LP63T WE62S LP64U LU07H LW11M LT92A LU28F AB83E LU20W VE87U VF75S WE57M LU24B LU23A LU22Y LU27E DT01B LU25C WC97F LT77J VE55K LT74R VE90X WE56L LP78K LU43W VF11M LU29G VF60Q LU34M LU33L LU32K WE64U

90075 90088 95021 95035 95059 95056 95069 90040 95062 95070 95080 95116 95086 95092 95093 95099 95096 95083 95051 95102 95120 95131 95119 95107 95192 95191 95104 95162 95210 95128 95212 95133 95136 95139 95219


Issue

Light Sequencer Sound to Light Adaptor 99 Electronic Volume Pedal 99 Rugby Clock Superhet Receiver 99 Digital Alarm Clock 99 Courtesy Light Controller 100 Intelligent Ni-Cad Battery Charger Mark II 100 PC Weather Station Software 100 Multistrobe - The Sequencer 100 RS232 Serial Line Tester 100 Crystal Radio Set 100 418MHz Radi Call Transmitter 101 Kojak Siren 101 Digital Storage PC Oscilloscope 101 IC Shortwave Receiver 102 Earth Lift Box 102 Passive Direct Injection Box 102 Over Rev Indicator 102 418MHz Radi-Call Receiver 102 GPS Development System Software 102 Pattress Mounting Dimmer Switch 103 Laser Pointer 103 Stereo Valve Preamplifier Tone Control Unit 103 Four Channel Running Light 103 MuIti-Strobe Interface 104 Drill Speed Controller 104 Siren Sound Generator 104 Guitar Phantom PSU 104 Plus/Minus 15V Regulator Kit 105 Liquid Level Controller 105 PIC 16C84 Programmer 105 3 Channel Sound to Light Unit 105 Simple 4 to-t Audio Mixer 105 Superscan Mark II Aerial 106 Active Transformer DI Box 106 Train Effects Generator 106 PAGE 16

APPENDIX C – CORRIGENDA Title

Vol. No. Page

20 Metre 20 Watt Linear Amplifier (Vol.13 No.81) 13 82 12/24V to 220V Inverter (Vol.15 No.98) 15 99 120W Combo Amplifier (Vol.1 No.1) 1 2 120W Combo Amplifier (Vol.1 No.1) 1 3 120W Combo Amplifier (Vol.1 No.1) 5 20 1kW High Power MOSFET Amplifier (Vol.7 No.26) 7 27 25W Stereo MOSFET Hi-Fi Amplifier (Vol.1 No.3) 3 12 4 Channel PWM Controller (Vol.4 No.14) 4 15 418MHz Encoded FM Receiver (Vol.13 No.83) 14 92 75W MOSFET Amplifier Bridging Module (Vol.2 No.6) 5 18 80 Metre Amateur Receiver (Vol.3 No.10) 4 15 Amplifier Monitor (Vol.11 No.47) 11 50 Amstrad Expansion System – Part 2 (Vol.5 No.19) 5 20 An Introduction to Programming in BASIC – Part 1 (Vol.10 No.42) 10 43 Art of Electronic Music (Vol.14 No.93) 14 94 Bobs Mini Circuits – Clap Switch (Vol.5 No.18) 5 19 Bobs Mini Circuits – Pulsed Speed Controller (Vol.7 No.25) 7 26 Bobs Mini Circuits – Signal Tracer (Vol.9 No.39) 10 41 Cautious Ni-Cd Charger (Vol.3 No.11) 4 13 Cautious Ni-Cd Charger (Vol.3 No.11) 4 14 CMOS Crystal Calibrator (Vol.2 No.7) 2 8 Code Lock (Vol.2 No.8) 3 9 Compuguard Vehicle Alarm – Part 1 (Vol.9 No.40) 10 42 Compuguard Vehicle Alarm – Part 2 (Vol.10 No.41) 10 42 Computers in the Real World – Part 6 (Vol.9 No.38) 9 39 Data File – L200 (Vol.10 No.46) 11 55 Data File – SSM2045 (Vol.10 No.43) 10 46 Digital Multi-Train Controller (Vol.1 No.2) 1 3 Digital Train Controller (Vol.12 No.71) 13 75 Discovering Satellite TV – Part 8 (Vol.12 No.70) 12 71 Door Chime (Vol.14 No.95) 15 96 Dragon RS232/Modem Interface (Vol.2 No.8) 3 9 Enlarger Exposure Meter (Vol.3 No.11) 4 14 Enlarger Timer (Vol.2 No.7) 2 8 Explosive Gas Alarm (Vol.4 No.13) 5 18 Explosive Gas Alarm (Vol.4 No.13) 7 25 Fast Food Counter – Microwave Facts (Vol.10 No.45)11 47 First Base – A Beginners Guide to Logic Design – Part 1 (Vol.2 No.6) 2 7 First Base – A Beginners Guide to Logic Design – Part 3 (Vol.2 No.8) 3 9 Flash Meter (Vol.4 No.13) 4 16 Frame Store (Vol.6 No.24) 7 25 Frequency Counter (Vol.1 No.4) 2 6 FSK Demodulator – Part 1 – Tone System & Data Filter (Vol.8 No.32) 8 34 Fundamentals – Basic Principles of Electricity (Vol.10 No.42) 10 44 Galactic Timer (Vol.10 No.44) 10 45 Getting To Know Test Equipment (Vol.13 No.81) 13 82 Guide to Modern Digital ICs (Vol.15 No.99) 15 103 High Power Speaker Cabinet (Vol.8 No.33) 8 34 High Quality Power Supply (Vol.10 No.42) 10 43 Home Security System (Vol.1 No.2) 1 3 Home Security System (Vol.1 No.2) 2 6 Home Security System (Vol.1 No.2) 2 7 Home Security System – External Horn Kit (Vol.1 No.2) 5 18 IBM Golfball Printer (Vol.5 No.17) 5 19 IBM PC Prototyping Card (Vol.12 No.67) 12 69 In-Situ Transistor Tester (Vol.12 No.64) 12 66 Infra-Red Door Lock (Vol.12 No.68) 12 69 Infra-Red Movement Detector (Vol.3 No.9) 4 13 Infra-Red Movement Detector (Vol.3 No.9) 5 18 Infra-Red Proximity Detector (Vol.5 No.20) 7 26 Intelligent Split Charge Unit (Vol.13 No.81) 13 82 K4000 Stereo Valve Amplifier – Part 1 (Vol.11 No.51) 11 54 K4000 Stereo Valve Amplifier – Part 2 (Vol.11 No.52) 11 55 Loop Alarm (Vol.12 No.70) 12 71 PAGE 17

54 71 64 64 29 35 36 63 51 64 63 1 29 1 13 64 32 1 49 41 38 4 1 1 1 1 1 64 2 2 7 4 41 38 64 60 1 26 4 49 60 64 1 1 1 54 55 1 1 64 64 26 64 64 2 2 2 49 64 32 54 1 1 2

Title

Vol. No. Page

Low Cost PSU (Vol.11 No.47) 11 Low Power Radio Control System (Vol.4 No.13) 4 Maplin Digi-Tel Telephone Exchange (Vol.1 No.4) 3 Maplin Ranger – 160m Receiver (Vol.10 No.43) 10 Medusa Infra Red Control Extender (Vol.13 No.72) 13 Microphones (Vol.10 No.46) 11 Millennium 4-20 Valve Amplifier (Vol.13 No.74) 13 Model Train Chuffer (Vol.13 No.79) 13 Model Train Chuffer (Vol.13 No.79) 14 Morse Decoder (Vol.11 No.53) 11 Multi Mode Digital Stopwatch (Vol.1 No.2) 1 Multi-Purpose 741 Op-Amp Card (Vol.12 No.68) 12 Multi-Stobe (Vol.14 No.92) 14 Multi-Strobe (Vol.14 No.92) 15 Musical Announcer (Vol.4 No.13) 6 Newton Valve Preamp Phono Module (Vol.14 No.85) 14 Newton Valve Preamp PSU Module (Vol.14 No.85) 14 NICAM TV Tuner Project (Vol.9 No.36) 9 Noise Reduction Unit Mark 2 (Vol.3 No.11) 4 Oric Talkback (Vol.3 No.9) 7 Packet Radio Modem (Vol.13 No.78) 14 PC Weather Station (Vol.12 No.70) 12 Peak Level Indicator (Vol.1 No.1) 1 Practical Robotics Techniques – Part 2 (Vol.10 No.43) 10 Professional Audio – Part 1 (Vol.12 No.64) 12 Professional Audio – Part 7 (Vol.12 No.70) 12 PWM Drill Speed Controller (Vol.13 No.81) 13 PWM Motor Driver (Vol.3 No.12) 4 Quizzer Priority Buzzer (Vol.13 No.72) 13 Remote Control for Digital Multi-Train Controller (Vol.1 No.3) 1 Remote Controller for 25W MOSFET Amplifier (Vol.1 No.4) 2 Semiconductor Processing – Part 1 (Vol.13 No.76) 13 Sharp MZ-80K Serial Interface (Vol.4 No.16) 4 Simple Melody Generator (Vol.7 No.26) 7 Simple Sweep Oscillator (Vol.2 No.7) 2 Siren Sound Generator (Vol.7 No.26) 7 Soldering Iron Station (Vol.11 No.59) 12 Spectrum Easyload (Vol.3 No.10) 3 SPO256 Speech Synthesiser (Vol.9 No.36) 9 SSM2015 Microphone Preamplifier (Vol.9 No.39) 10 Superscan Aerial (Vol.14 No.89) 14 Synchime (Vol.2 No.8) 3 TDA7000 Radio (Vol.3 No.9) 3 Temperature Controller (Vol.10 No.43) 10 Test Gear & Measurements – Part 4 (Vol.6 No.22) 6 The Maplin Modem (Vol.2 No.5) 2 The Maplin Modem (Vol.2 No.5) 2 The Maplin Modem (Vol.2 No.5) 4 Two Way MIDI Switch Box (Vol.10 No.46) 11 UM34811A Multi Tune Generator (Vol.7 No.26) 7 VHF/UHF Preamplifier (Vol.13 No.81) 13 VIC20 RS232 Interface (Vol.2 No.7) 2 VIC20 Talkback (Vol.2 No.6) 2 Video Amplifier (Vol.10 No.44) 10 Voice Vandal (Vol.14 No.89) 14 Weather Satellite Decoder (Vol.5 No.20) 6 Weather Satellite Decoder – Sync Tone Board (Vol.5 No.20) 6 Weather Satellite Down Converter – Part 2 (Vol.6 No.23) 7 Xenon Flash Tube Driver (Vol.3 No.11) 5 Zero Crossing Opto Switch (Vol.10 No.41) 10 ZX Spectrum RS232/Modem Interface (Vol.2 No.8) 3 ZX Spectrum RS232/Modem Interface (Vol.2 No.8) 4 ZX81 Keyboard (Vol.1 No.3) 1 ZX81 Keyboard (Vol.1 No.3) 2 ZX81 Modem Interface (Vol.2 No.7) 3 ZX81 Talkback (Vol.2 No.6) 2 ZX81 Talkback (Vol.2 No.6) 3


50 16 9 44 73 47 75 82 93 55 3 69 93 96 21 90 90 38 13 26 93 71 2 44 65 71 82 15 73

1 49 4 1 2 1 2 54 63 1 64 2 63 7 63 72 72 1 49 32 63 2 64 1 1 2 54 63 2

4

64

7 78 16 27 8 27 61 12 39 41 92 9 12 44 23 7 8 13 50 27 82 8 7 46 92 22

26 2 49 35 38 35 1 36 1 1 51 4 36 1 64 26 38 49 1 35 54 38 26 1 51 64

21 25 18 43 10 13 4 6 12 7 12

63 60 64 1 36 49 64 64 36 26 36


Maplin Magazine Index

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