I've been trying to find out what frequencies get filtered out by which type and capacity capacitors, but cannot find simple rules that say "type X, cap Y filters xxx (k/M)Hz - yyy (k/M)Hz". Yet everything I read seems to indicate this is common knowledge - or does everyone just use trial and error?. Who can help me out in providing some clarity on the matter?
Similar with ferrite beads/chokes. I know a big hunking choke helped me filter out the interference in my circuit, and have my eyes on some SMD-sized beads for on my small IC. How do I know whether the big and the small choke both filter the same frequency? An answer that tells me how to read a datasheet to find this out for myself is perfectly acceptable btw, I have poured over many a datasheet in the last few months :)
Thanks a bunch in advance!