12V DC to 220V AC Inverter - 500W with 4047

Description: 

This circuit is designed for inverting 12V DC voltage in to the 220V AC voltage. The IC 4047 is used to generate square wave of 50Hz and amplify the current. Then by using the step transformer, it amplifies the voltage. This inverter circuit is low cost and stable. Be careful while working on this circuit since it uses high voltage.

How to calculate transformer rating:

The basic formula is P=VI and between input output of the transformer we have Power input = Power output

For example if we want a 220W output at 220V then we need 1A at the output. Then at the input we must have at least 18.3V at 12V because: 12V*18.3 = 220v*1

So you have to wind the step up transformer 12v to 220v but input winding must be capable to bear 20A.

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cyril emma said:

ivertercircuit of 1kw is what i need

April 29, 2008

Muhammad Azhar said:

Aslam o Alikom Sir i use irfp250 Replese of 2n3055 I wait Your Kind Response How I Oprate Him Thanks

May 15, 2008