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Power Supply Project Report
This report report summarizes the the procedure of Power Supply making, a project given to as a semester project.
Submitted To: Sir Mohsin Jameel
Submitted y! "uhammad #bdullah $aroon Shah $usnain "urtaza Talha T alha %ousuf %ousuf
he project re7uired us to apply the knowledge obtained /n asic electronics 4ourse to make a Power Supply. /nput of power supply is --83 #4 589:8 $z provide from a regular wall socket while the output is 53 4.
2 Com5onents !ist: • • • • •
Transformer;-83,58$z999999<'=3,58$z> iode;'(&88?> @ & ;for rectiAcation> 4apacitor ;--88 B) as a Alter > Resistor ;'k> Regulator! 1?=85 ;53,'.5#>
" #lo46 Dia7ram: ' S4hemati4 Dia7ram:
'.1
)un4tion O8 ea4h Com5onent:
'.1.1 Trans8ormer: Transformers are used to change #4 voltages from one voltage level to another within power networks. Transformer works on the principle of +lectromagnetic /nduction. # varying current in the transformerCs primary winding creates a varying magnetic DuE in the transformerCs secondary winding. This varying magnetic DuE at the secondary winding induces a varying voltage in the secondary winding due to electromagnetic induction. In our 5ro9e4t trans8ormer is used to ste5don the ;olta7e 8rom the so46et %C 22/, to <%C1=,. '.1.2 Diode: # diode is a two9terminal electronic component that conducts primarily in one direction. In our 5ro9e4t 8our diodes are used to ma6e a 8ulla;e re4ti>er. '.1." )ull +a;e Re4ti>er: # full9wave rectiAer converts the whole of the input #4 waveform to one of constant polarity ;positive or negative> at its output. )ull9wave rectiAcation converts both polarities polarity ;positive or negative> of the input waveform to pulsating 4 ;direct current>. The conAguration of diodes to produce pulsating 4 voltage from #4
/nput
*utput
/n our project we converted '=3#4 transformer output to 4 pulsating voltage using full wave rectiAer.
'.1.' Ca5a4itor: # capacitor is a passive two9terminal electrical component used to store electrical energy temporarily in an electric Aeld. In our 5ro9e4t 4a5a4itor is used as >lter Ca5a4itor as >lter: 4apacitor in power supply is used as Alter to remove Ductuations in the output of )ull9wave rectiAer and provide a constant 4 voltage .4onstant 4 voltage is re7uired for many
electronic devices so Alter is very important component in power supply.Ca5a4itor Alter is simply the capacitor connected from rectiAer output to ground. The load is applied parallel to capacitor. The 4on>7uration o8 4a5a4itor as >lter: The voltage produced from Altering is not constant but rather with minute Ductuations. These Ductuations are called ripples. 1arger the Ductuations less eFective the Altering. )iltering depends on capacitance of capacitor. 1arger the capacitance more eFective
Altering voltage at the end of Alter is!
.The
'.1.* Re7ulator: # regulator is a component of power supply which maintains a constant output voltage ;current> despite changes in input, load current or temperature "ost regulators are integrated circuits with three terminals9an input terminal, an output terminal, and reference terminal. !3=/* Re7ulator 2e have used the !3=/* re7ulator. /t is an integrated circuit regulator .2e can apply the input voltage of range *,1=, and can obtain *, at output The conAguration is!
* Simulation: *.1 Out5ut )rom trans8ormer:
*.2 %8ter re4ti>4ation:
*." )iltered +a;e:
*.' Re7ulated *, Out5ut:
*.* 88e4t o8 loerin7 8ilter 4a5a4itor 22//?)@1?): The less the value of capacitor, the greater will be Ductuation
- Con4lusion: /t was a good learning eEperience to apply the theoretical knowledge and produce a power supply. 2e faced many problems during the project like )aulty components, Soldering issues etc but it was rather good eEperience to face and solve such problems.