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circuit for generating varying PWM

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kushal nandanwar

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I am looking for circuit for generating varying PWM signal

I my application I have used astable multi-vibrator circuit to generate square wave, but I want to vary it's width.
 

Hi,

Ne555, any microcontroller with PWM output, any comparator, dedicated PWM controller....

Klaus
 

I am working on some basic level of electronic . My application is buck-boost convector for with I need circuit which can produce varying PWM while sensing output voltage. Do not want to use IC like 555 or microcontorller.
 

Hi,

All the above examples should work.

If you want buck boost, why don't you look for dedicated buck-boost ICs, or SEPIC ICs?
There are a lot ready to buy.

Klaus
 

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