square wave to sine wave

[tony Ben]

pls can any one hint me on how to generate sine wave from my square wave inverter base on pwm(pulse width modulation).
Secondly , what is the effect of runing inductive load like ceiling fans and electric blenders from a square wave power source. Dose it affect the life span of the garget?

 

[Styx]

"TheOne" posted a while back a post about

"get a sine wave from a 555timer"

The output of a 555 is a squarewave. Bascially (via fourier) all waveforms can be made up of sinewaves of different freq,ampl,shift.

The fundemental of a sqarewave is a sinewave - filter out all harmonics above the fundemental

As to a sqarewave voltage to an inductive load. There si no problem, this is hopw PWM controller work to control the voltage to a load (since the average level will be reduced by the duty). Only thing to watch out for is to ensure the current through the inductive load has a path to take when the voltage is OFF (ie via a free-wheel diode)

 

[panic mode]

are you trying to build and AC inverter?