--BawA--
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i have made an inverter using linear topology ,12vdc to 220vac 100va ,,but it produce square wave of 50hz,, i want to know how to convert this square wave into pure sine wave (using reference sine wave),,please help me ,,i have searched on internet alot,but didn't find any useful data...
You will have very poor efficiency (very high losses) if you do manage convert the square wave output to sine wave using some sort of filter.
It's better if you can redesign your circuit using sinusoidal pulse width modulation (SPWM).
thanx alot tpetar ,,,
i need one more help,,,plz send me schematics of smps based inverter (>500 watt) with component list ,,,,
thanx tpetar,,,
plzz tell me the mechanism of driving the mosfet gate through spwm,,,i mean ,by switching the mosfet in time domain ,how can we get sine wave output ,,,? suppose i have a square wave of 50 hz and i give this wave to mosfet gate then inside mosfet channel will be formed between drain and source at the rate of 50hz(alternatvily 20ms i.e 10ms channel will be formed and 10 millisecond channel will be empty) so by doing this we can get a squre wave output,,,i want to know than how this spwm do this ,,n also help me about spwm,,,,
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