In Reply to: Cathode bypass capacitor posted by Tubenstein on July 26, 2014 at 06:29:04:
All a cathode bypass cap does is eliminates the cathode feedback. Once you are below 5 hz or so, using a larger cap is counter productive. You do not want more of a 1 hz signal in your amp than you have to have. The quality of the cap is important as well. A 1K cathode resistor bypassed with a 50uf cap will have a cutoff frequency of 3.2 hz. With a 150 ohm cathode resistor, you are looking at a 500uf cap. Larger is not better!
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Follow Ups
- No. - Chip647 08:28:18 07/26/14 (11)
- RE: No. - Tubenstein 09:23:16 07/26/14 (10)
- The formula: - Ralph 09:39:24 07/28/14 (3)
- RE: The formula: - danlaudionut 09:52:58 07/28/14 (2)
- Oops! Thanks for pointing that out nt - Ralph 11:35:53 07/28/14 (0)
- RE: The formula: - Tre' 10:46:20 07/28/14 (0)
- RE: No. - Triode_Kingdom 10:53:02 07/26/14 (4)
- RE: No. - Caucasian Blackplate 11:47:45 07/27/14 (0)
- RE: No. - Thermionic27609 11:04:36 07/27/14 (0)
- RE: No. - danlaudionut 23:49:07 07/26/14 (0)
- What Triode said... what I gleaned from Radiotron handbook 3rd/4th edition~nT - Cleantimestream 14:15:45 07/26/14 (0)
- RE: No. - Lew 10:42:45 07/26/14 (0)