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sinewave inverter circuit help

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zio_nneo

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circuit for pure sine wave inverter

Can anybody help me on designing the inverter that has very pure sine wave at its output. thanx in advance
 

Dear zio_nneo,

Yes, I can help you. What kind of help do you need?
 

I want to design the 40W inverter whose output is pure sine wave. Last time I did one but that doesnot produce sine wave. In that I have just generate the square wave that wave had drived the mosfet Thats it. But its output isnot sine wave. I want pure sine wave 220V as available in AC line.
 

My suggestion is to use PWM technique, are you familiar with some kind of a micro controller, or you want a design with simple analog components like opamp, comparator?

The pwm modulator frequency should be about 20kHz, the output will have a LC filter to filter the carrier (20Khz) frequency out.
 
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    kola56

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What is the power source ? How many Volts ? What must be the frequency at output ?
 

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