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controlling the width of puls by voltage

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uday mehta

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how can i control the width of square wave by varying the voltage without using 555 timer ic.
actually i am using potentiometer and mirocontrollor.
if there is another component required then plese mention.
 
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uday mehta said:
how can i control the width of square wave by varying the voltage without using 555 timer ic.
actually i am using potentiometer and mirocontrollor.
if there is another component required then plese mention.
Click to expand...
use the timer of the microcontroller to set the period and invert a digital output on each timer 'tick'
 

i have done it but how the width of puls will control by "voltage"?
if i just write a timer program then width will fixed.
 

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