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square wave to sine wave

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tony Ben

New Member
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

Active Member
"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

Well-Known Member
are you trying to build and AC inverter?
 
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