Electrical and Computer Engineering

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Electrical and computer engineering (ECE) community, for professionals and learners. Discuss ECE related topics here, for instance digital design, signal processing, circuit analysis, electromagnetics, microelectronics, power electronics, RF electronics, etc.

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Audio noise chasing: Oscilloscope on 120V AC (lemmy.ca)

submitted 2 months ago by remotelove@lemmy.ca to c/ece@lemmy.world

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I just realized that I have never used an oscilloscope on anything over 50V DC. (There has never been a need, actually.)

The goal is to trace how noise generated by my PC GPU is propagating through the power circuit. As I don't want to start tossing in power filters at random spots, it would be nice to actually understand what is going on first.

TBH, measuring mains AC doesn't seem any different than any other measurement I would take, other than using a 1:100 scope probe. Are there any "gotchas" I should be aware of that would put my scope at risk?

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