Note :This Circuit is using high voltage that is lethal. Please take appropriate precautions
Using this circuit that you could convert the 12V dc in to the 220V Ac. In this circuit 4047 is use to generate the sq. wave of 50hz and enlarge the current and then enlarge the voltage by means of the use of the step transformer. How to calculate transformer rating
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The basic formula is P=VI and between input output of the transformer we've Power input = Power output
For example if we wish a 220W output at 220V then we want 1A at the output. Then on the input we should have at the least 18.3V at 12V because: 12V*18.3 = 220v*1
So you should wind the step up transformer 12v to 220v but input winding should be able to endure 20A.
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