250 to 5000 watts PWM DC_AC 220V Power Inverter.pdf

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Pure Sine Wave Wa ve Inverter Special Price, From € Special 89,00 89,0 0 Fast Shipping From Italy

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inverter (/tag/type-id/category-technology/k (/tag/type-id/category-technology/keyword-i eyword-inverter/) nverter/) converter (/tag/type-id/category-technology/k (/tag/type-id/category-technology/keyword-conv eyword-convert erter/) er/) dc (/tag/type-id/category-technology/key (/tag/type-id/category-technology/keyword-dc/) word-dc/) ac (/tag/type-id/category-technology/key (/tag/type-id/category-technology/keyword-ac/) word-ac/) pwm (/tag/type-id/category-technology/k (/tag/type-id/category-technology/keyword-pwm/) eyword-pwm/) 3524 (/tag/type-id/category-technology/k (/tag/type-id/category-technology/keyword-3524/) eyword-3524/) dc ac (/tag/type-id/category-technology/key (/tag/type-id/category-technology/keyword-dc+ac word-dc+ac/) /)

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YOUR GUIDE TO DC to AC POWER INVERTERS (/id/YOUR-GUIDE-TO-DCto-AC-POWERUdhëzues juaj për DC për të AC Inverter Fuqie (/id/Udhëzues-juaj-për-DCpër-të-AC-Inverter-Fuqie/)

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pure sine wave inverter using pic microcontroller (/id/pure-sine-waveinverter-using-picEasy High Voltage DC Crank up Generator. (/id/Easy-High-Voltage-DCCrank-up-Generator/) 12vDC to 220vAC 100watts inverter (/id/12vDC-to220vAC-100wattsinverter/) See More (/tag/type-id/?q=)

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This is a heavy duty design of a Pulse Width Modulator DC/AC inverter using







1500 watts inverter that i built, to increase the power of the circuit you have to add more of the Q7 and Q8 transistors in parallel, each pair you add will increase your power by 250 watts, ex: to get 750 watts of power from the inverter you need to add in parallel 2 of Q7 and 2 of Q8 to the original design. 2> If 2> If you increase the power transistors you have to enlarge the T2 transformer to match the new needs, the circuit's transformer is rated 25 amps to handle 250 watts of 220v, for every 1 additional amp you need on the 220v side you have to increase 10 amps on the 12v side, of course there are limits to the thickness of the winding so if you need more than 750 watts i recommend that you use a 24VDC supply instead of 12 volts: DC voltage and Transformer "T2" winding recommendation: Power Supply Winding 750w 12VDC P:24V "12-0-12" / S:220V 1500w 24VDC P:48V "24-0-24" / S:220V 2250w 36VDC P:72V "36-0-36" / S:220V 3000w 48VDC P:96V "48-0-48" / S:220V 3750w 60VDC P:120V "60-0-60" / S:220V 4500w 72VDC P:144V "72-0-72" / S:220V 5250w 84VDC P:168V "84-0-84" / S:220V *The transformer should be "center tapped" at the primary side. **You **You can make the secondary 110v if needed. ***The ***The transformer in the pic is a custom made (48V center tapped / 220v ) 2000 watts, weights like 10 kilos. 3> R1 is to set the PWM duty cycle to 220v. Connect voltmeter to the output of your inverter and vary VR1 till the voltage reads 220V. 4> R2 4> R2 is to set the frequency to 50 or 60 Hz (R2 range is between 40Hz to 75Hz), so guys that do not have a frequency meter are advised to blindly put this variable resistor mid-way which should drop you in the range of 50~60 Hz. If you want you can substitue the variable resistor with a fixed resistor using the following formula: F = 1.3 / (RxC) in our case to get a 50Hz output we remove both the 100K and the variable 100K both from pin 6 and we put instead a 260K fixed resistor and we leave the 0.1uF (the 104 cap) as it is, this change should give out a fixed 50Hz as per the formula : 1.3 / (260,000 ohm x 0.0000001 farad) = 50Hz But in reality it will not exactly give 50Hz because the 260K resistor has a specific error value margin so does the capacitor, that's why i recommend a variable resistor so that accurate calibration can be achieved. 5> Use 5> Use either tantalum or polyester film "as in pic" for the 104 caps, ceramic disc caps change value once hot and this in turn changes the frequency of the inverter so they are not recommended. 6> Pin 10 of the SG3524 can be used to auto shut down the inverter, once a positive voltage is given instead of negative to pin10, the SG3524 will stop oscillating. This is useful for persons wanting to add some cosmetic makeup to their inverters like overload cutoff, low battery cutoff or overheating cutoff. 7> Wiring 7> Wiring connections on the power stage side should be thick enough to handle the huge amps drain from the batteries. I marked them with dark black on the schema also I included a pic so you see how thick those wires must be. 8> The design does not include a battery charger since each person will be building a custom version of the inverter with specific power needs. If you are







transformer, when you power up the circuit the fan will start this will always give you a simple way to know that 220v is present and everything is OK.. You can use a computer's old power supply fan if you like. Note that the fan must suck air out from the inverter case and NOT blow inside, so install it the correct way or it will be useless. Also note how I fixed both the heat sinks and where the fan is, in a way that the fan sucks hot air from like a channel between the 2 heatsinks. 10> 2 10> 2 circuit breakers are recommended instead of fuses, one on the DC side and one on the AC side, depending on your design Ex: for a 24vDC ( 1500 watts design ) put a 60Amp breaker on the DC side and a 6Amp on the AC side. For every 1amp of 220vAC you will be draining like 8 to 10 Amps from the 12v battery, make your calculations ! 11> The 11> The 2 Heat sinks should be big enough to cool the transistors, they are separate and should NOT touch each other. "see the pics" 12> Important: If you're building a big design that uses more than 24VDC as power source, make sure not to supply the driver circuit with more than 24v maximum. (EX: If you have 4 batteries 4x12 = 48v , connect the v+ supply of the driver circuit to the second battery's (+) terminal with a thin 1 mm wire which is more than enough. this supplies the driver circuit with +24v while supplies the power transformer with +48v) "see the batteries pic example" 13> "Optional" 13> "Optional" : Deep Cycle batteries are your best choice, consider them for best results .. read more (http://en.wikipedia.org/wiki/Deep_cycle_battery) 14> Be 14> Be cautious when building this circuit it involves high voltage which is lethal, any part you touch when the circuit is ON could give you a nasty painful jolt, specially the heat-sinks, never touch them when the circuit is on to see if the transistors are hot !! I ate it several times :) 15> The 15> The optional "Low voltage warning" is already embedded in the PCB layout,

250 to 5000 watts PWM DC/AC 220V Power Inverter by Nick_Zouein you can disregard it and not install it's components if you do not need it. It does (/member/Nick_Zouein/)

not affect the functionality of the main circuit. Download

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16> The Motorola 2N6277 is a durable heavy duty power transistor, it is used in many US tanks for it's reliability but unfortunately it is a very hard to find part, instead you can substitute each 2N6277 with 2 x 2N3773 or any equivalent. 17> I've 17> I've included an optional "Battery level indicator" circuit diagram that has 4 LEDs, you can see it installed on the front panel of my inverter pic, it is functioning great and shows precisely how much juice the batteries still have. I have included a small relay that is powered by the last LED to auto shutoff the inverter once last LED is off. 18> Also 18> Also included an optional "Overload circuit", it is very easy to build and can be calibrated to the desired overload current threshold cutoff point through the potentiometer VR1. R1 is rated 5watts for inverters upto 1000 watts. For bigger versions of the inverter like 1000 to 3000 watts inverters, replace R1 (1 ohm, 5watts) with (1 ohm, 17watts) which should handle loads upto 10 VA. Make sure you install a proper relay to handle big current drains. 19> Please guys take your time to read and understand my notes, browse and read the posts and questions asked by others because there are many

-10%

429,99 lei

449,99 lei







22> Testing your completed circuit with crocodile clips or thin wires WILL NOT WORK ! You'll get wrong voltage readings.

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oyinzy (/member/oyinzy/) (/member/oyinzy/)

8 days ago Reply

Hi Nick i want to ask if i could use diff power transistors in this project coz electronic components availability and the cash to get it is a heck of a problem (/member/oyinzy/) in my region.


8 days ago Reply

Hi Nick i want to ask if i could use diff power transistors in this project coz electronic components availability and the cash to get it is a heck of a problem (/member/oyinzy/) in my region.


8 days ago Reply

Oyinz (/member/oyinzy/)

MathieuB1 (/member/MathieuB1/) (/member/MathieuB1/)

1 month ago Reply

hello i de like to know if my transformer 12/220v 150VA could work for 3000 thanks for helping me

(/member/MathieuB1/) watts output!

AlexanderH4 (/member/AlexanderH4/) MathieuB1

12 days ago Reply

150VA is 150 watts with a power factor of 1, so no. (/member/AlexanderH4/)

mascarenhasrohan mascarenhasrohan (/member/masca (/member/mascarenhasrohan/) renhasrohan/)

1 month ago Reply

Is it a pure sine wave pwm inverter? pwm inverter? Kindly reaspond. Thank you. (/member/mascarenhasrohan/)

eeteddy (/member/eeteddy/) (/member/eeteddy/) made made it!

1 month ago Reply









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Nick_Zouein (/member/Nick_ (/member/Nick_Zouein/) Zouein/) (author)

eeteddy 1 month ago Reply

Hello eeteddy, (/member/Nick_Zouein/)

Happy to hear that you built one. The diodes are not necessarily needed, you can completely remove them they will not make any effect on the functionality on the inverter.

eeteddy (/member/eeteddy/) (/member/eeteddy/) Nick_Zouein

1 month ago Reply

Thank you, but how do i protect the transistors from shortcircuit? (/member/eeteddy/)

ciprian1903 (/member/ciprian1903/) (/member/ciprian1903/)

2 months ago Reply

hello sir. i want to know if a 12v750w inverter can start a fridge that have a motor, and if the inverter is pure or modified sine wave.good day

(/member/ciprian1903/) 100w power

Premalal1965 (/member/Premalal1965/)

2 months ago Reply







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meggyhimself (/member/meggyhimself/) (/member/meggyhimself/) made made it!

2 months ago Reply

(/member/meggyhimself/)

Finally made it! Works perfectly!

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jawaaz.ab 2 (/member/jawaaz.ab 2/)

4 months ago Reply

WHat if we use RC filter after pins 14 and 11 and then to mosfet so that we SInewave output..we can convert square wave into sine wave using RC filter

(/member/jawaaz.ab2/) can get a


jawaaz.ab2 jawaaz.ab2 4 months ago Reply

test it out and post us your results. (/member/Nick_Zouein/)

jawaaz.ab 2 (/member/jawaaz.ab 2/) Nick_Zouein

2 months ago Reply

yes I tested that but The MOSFET's are not responding to SIne wave we cant drive a MOSFET with AC signal....

(/member/jawaaz.ab2/) signals,,,well

CalebT2 (/member/CalebT2/) (/member/CalebT2/)

2 months ago Reply

(/member/CalebT2/)

dessty (/member/dessty/) (/member/dessty/)

3 months ago Reply







3 months ago Reply

hii Nick , i make a this inverter , but problem is the transformer output is 115 vac but i use 220vac and 12-0-12 20A transformer so what is the problem in (/member/ronakpatel5391/) my circuit ?

6 months ago Reply

kathkathmina (/member/kathkathmina/) (/member/kathkathmina/)

hi i'm making an 300W inverter based on your circuit, how will I know how the transformer is?

(/member/kathkathmina/) many ampere


kathkathmina kathkathmina 6 months ago Reply

15 amps (/member/Nick_Zouein/)

hennie.gerber.3 (/member/hennie.gerber.3/ (/member/hennie.gerber.3/)) Nick_Zouein 3 months ago Reply

Hi Nick (/member/hennie.gerber.3/)

I have a 650VA Toroidal Transformer with 22V 0 22V center tapped. Can I use it for the 24 V Purpose . I have tried it but the Moment I Power on the Transistors Blow.I used another Toroidal at lower Power and works . Coukd it be the the Transformers windings are incorrect.

hennie.gerber.3 (/member/hennie.gerber.3/) (/member/hennie.gerber.3/)

5 months ago Reply

Hi Nick (/member/hennie.gerber.3/)

The inverter is working but the feedback circuit does not seem to work.I have used IRF130 Mosfets with a 200Watt 36V036V Transformer.When I adjust the Voltage pot nothing happens.So when i put load the Voltage drops from 220V to about 170 V with a 550Watt Load.

Vickylbee (/member/Vickylbee/) hennie.gerber.3

4 months ago Reply

Hello Hennie.gerber.3, (/member/Vickylbee/)

Yea, i got the same problem like you, so i'm reconstructing my circuit to see if i'll get it right. Please do keep me informed if you figure out the problem.







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hendra.kho.73 (/member/hendra.kho.73/) (/member/hendra.kho.73/)

3 months ago Reply

Sorry Mr.Nick...I tried to send the picture last night but it failed. Since the was bad ( the blank one) appeared on the forum five times. Sorry for that. I don't want people think it's a joke

(/member/hendra.kho.73/) connection


3 months ago Reply

(/member/hendra.kho.73/)


3 months ago Reply



3 months ago Reply



3 months ago Reply

Hi...Nick and someone who can help me....I need help, I've finished my no electricity flow. Was that because of the wrong wire installment or what? Pin 11 and 14 are 3,8v each. I've tried to upside-down the wire but it didn't work. My questions are: 1. The flow BC 337 PCB to BasisTJP122. How about Emiter to Emiter? n Collector to Collector?

(/member/hendra.kho.73/) inverter but

2. I've put on diode 6A, anode connected to emiter and catode connected to Collector. What should I do then? Where should the cables from Basis n







3 months ago Reply

ezinne.gift (/member/ezinne.gift/) (/member/ezinne.gift/)

pls help (/member/ezinne.gift/)

3 months ago Reply

ezinne.gift (/member/ezinne.gift/) (/member/ezinne.gift/)

pls help (/member/ezinne.gift/)

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250 to 5000 watts PWM DC_AC 220V Power Inverter.pdf

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