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Re: School is in




If you have a volt meter set to DC and apply AC to it, it may show some random readings, depending on how it's sampling the voltage.  Where it's sampling during the sine wave of the AC it may appear as DC to the meter for the duration of the sample.  Problem is, the next sample could be anywhere else in the sine wave, causing the number to bounce all over the place.


On a typical analog old school meter, on the DC setting with an AC source, you would see the meter simply vibrate near zero volts.