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Do you often hear the ringing of switching power supplies and devices when you are in a quiet space?

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j4k3@lemmy.world
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asklemmy@lemmy.ml
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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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doctorzeromd@sopuli.xyz
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Yes, and CRTs as well.

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