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?
Worked on a building site with LED work lamps and couldn’t work out why I got a sharp, blinding headache at about 2pm every day
Changed them for halogen ones, problem gone
Couldn’t see a flickering, but could kinda sense it