ferrite

I need some advice on selecting a ferrite to filter out noise spikes from a switching power supply that is being fed into a radio. I am an electronics hobbyist with spotty knowledge, mostly from the late 70’s to early 80’s (TTL, CMOS, op-amps), but unfortunately minimal RF. If this is not the...

I’m about to tackle a clean-up operation on the computer leads – USB, video, etc. I can see that I have interference from the computer right from hf through to a few hundred MHz. I see that the ferrite materials in the clip-ons are designed to peak at specific frequency ranges. The computer...