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Do you often hear the ringing of switching power supplies and devices when you are in a quiet space? (self.asklemmy)

submitted 9 months ago* (last edited 9 months ago) by j4k3 to c/[email protected]

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I'm curious, how many people are aware of these sounds. I have designed, etched, and built my own switching power supplies along with winding my own transformers. I am aware of the source of the noise. So, does anyone else hear these high frequency sounds regularly?

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[–] Lemminary 11 points 9 months ago* (last edited 9 months ago)

I don't think I own anything that makes noise like that anymore, but we used to have a big TV a few years ago that I could tell was on or off from the other side of the wall.

E: I just remembered that my speakers sometimes make noise if I listen at a certain angle and last week I heard someone's iPhone charger make a ringing noise while sitting on the socket so I disconnected it.