Cathode pypass caps

[jestaudio]

I think i understand the theory that the caps attenuate certain frequencys but how do you determine what value to use, electrolytic or not, and would you use them in a gain circuit
Thanks again for any advice given

[pdf64]

See http://www.ampbooks.com/home/amplifier- ... capacitor/
As a general rule, use film types unless their size makes electrolytics more practical.

[fishy]

You might find this useful.
Merlin has a bunch of great stuff on his site. The loadline plotter file at the end of the page is worth playing with.

http://www.freewebs.com/valvewizard/links.html

[rdjones]

1/(2piRC)

rd