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?
Same. As a kid my hearing was sharp enough to hear the high pitched sound my neighbor’s tube TV made.
Now? 24/7 of this: https://youtu.be/lRxTBo7qxg8?si=32Vsxmux3p-y2Vow