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?
I did a lot of stuff with CRT’s during ‘Rona and man sometimes that whine just pierced my ears - my dog (RIP love ya bud) would just look at me and slowly walk off every time lol