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sine wave inverter circuitry

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simonaze4

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inverter circuitry

i already have a good and perfectly working square wave inverter. all i need is a filter and shaping circuitry with which i can shape the output to become a sine wave inverter. pls help! i need a sine wave inverter circuitry.
 

A square-wave inverter circuit is extremely simple.
A sine-wave inverter is fairly complicated.
If you filter a square-wave inverter then most of its power will heat the filter and the output power will be very low.

A sine-wave inverter is made with a fairly high frequency Pulse-Width-Modulation circuit. It has many "steps" that are easy to smooth with a small low loss filter.
 

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