Power meter (design example)

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In daqq's "home mini server" thread in the off-topic forum power measurements came up, and since this design does not include an AVR, I decided to do a blatant plug here.


This power meter uses a PWM multiplier, achieves surprisingly good precision and accuracy even on high crest factor waveforms, and only uses components you're likely to find in the drawer.

The analog way still works.