So a few days ago someone installed a cable TV, the cable is connected to a dvd/vcr combo player, and the sound is outputted to an amp and external speakers. When the cable was installed, they just ...

I just got the latest Hifi News magazine and, as usual, the same ridiculously expensive mains cables etc are being pimped. I usually just skim over that crap, after admiring how pretty it is, but this ...

Power transformers are often the main source of common-mode noise in isolated switching power converters. Why? Because inside the transformer, the windings on the primary and secondary sides of the ...