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Dc Voltage with PWM of Atmega32 (smps)

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What you are looking for is a DAC, assuming you need only a voltage signal and no current. You can PWM a lowpass R-C filter.
 
Maybe you should do some reading then...then ask specific questions. It's very involved. A website will be far better for covering the basics than someone on a forum.

**broken link removed**

It's your first post...and you just asked the question outright...this isn't for a school project is it? If it is, I'm afraid you're on your own.
 
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