12V DC to 220V AC Inverter Circuit

This is a quite simple DC to AC inverter that provides 220VAC when a 12VDC power source is provided. It can be used to power very light loads like night lamps and cordless telephones, but can be modified into a powerful inverter by adding more MOSFETs. It uses 2 power IRFZ44 MOSFETs for driving the output power and the 4047 IC as an astable multivibrator operating at a frequency of around 50 Hz.

The 10 and 11 pin outputs of the IC directly drive power MOSFETs that are used in push-pull configuration. The output transformer has a 9V-0-9V, 2 Amps on the secondary and 230V on the primary. Use suitable heat-sinks for MOSFETs.

Remember that this is not a sine-wave inverter, not even a modified one. It’s just a square-wave one so you can power only light bulbs, and small power tools that do not require a frequency with a sinusoidal wave form!

Schematic of the DC to AC Inverter Circuit

schematic of 12v to 220v inverter circuit


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  • TheDude

    Where’s the return path to the negative terminal of the 12V dc battery?

  • TheDude

    How do I connect the Varistor and the 12V battery (I’m using a battery), it only shows where the positive side is?

  • naresh purohit

    sir i tested your circuit on bread board their was some humming noise from the circuit , as well a lot of heating due to which breadboard started melting .
    also a sound of beep was their . why it is so ?? can you guided me???

  • sharik

    i am just making a project using yours circuit its a smart power generation i just want few guidience

  • Maksud

    please information me how can i will make dc celling fan 48″.
    i don’t know about circuit and copper motor

  • Paul Richard

    Ok but i would like to know if 600 watts inverter be enough to power 32″ LED TV, one standing fan, two tubelights, music system, phone charging system??

  • Paul

    Can 600 watts inverter be changed to 3 kilowatts??


      Not easily you will need at least 48 volt batteries and the transformer will be larger than an old type oil cooled welding machine that can supply welding current for 4millimeter welding sticks!!!The transistors or mosfets will have to be BIG and about thirty per side to be safe!! Basically the inverter will be the same working but you will have to have proper protection circuits as the basic circuit will not last. I would do the phase splitting not with that little IC but a special transformer that itself will be quite big and there I would employ a driver of about 20 watts to drive the bases of the output devices. Remember that it will consume more power to drive itself than what we normally will assume.


    To be safe I would recommend at least 24 volts! But if you have to use 12 volts input the supply must be 60 amps and this will need 6 six 10 amp mosfets per side that is 12 twelve total to drive that job!!!You need a BIG battery for this job electric forktruck battery!!!

  • Dare

    Also,after changing the Transformer to 500W one 12V 41A, what else will I need to change in the Circuit to get the desired output wattage?

  • Dare Diamond

    Hello Kuberkoos.

    Please may I know if this circuit can bé used to power A Voltage Multiplier Circuit irrespective of the output wave bé it pure sine, squre, modified etc.?

    Please Sir help me.

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