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RE: update

"Well now I am really confused. I tried to measure the voltage on a 5v filament transformer with my scope and it read 16 volts."

You mean a good old-fashioned mains transformer with a 5V filament winding?

When you say "it read 16V" do you mean the sinewave was 16V peak-to-peak? That would be about right. 16V peak-to-peak for a sinewave translates to 16/(2*Sqrt2) V rms, which is about 5.7V rms. If you were measuring the output of the transformer with no load, then 5.7V rms might very well be right for a nominally 5V rms transformer.

Chris


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