In Reply to: RE: No. posted by Tubenstein on July 26, 2014 at 09:23:16:
The value of the cathode bypass cap is determined by more than just frequency response. Things like the class of operation, topology, and even the designer's philosophy regarding issues such as overload recovery must be considered. That aside, typical values to bypass a 270 ohm cathode resistor in a AB1 PP amplifier would be 47-100uF. The exact value isn't critical, as you will see if you research schematics of commercial equipment online. Note that while the cathode should have sufficient bypassing so as not to create significant degeneration or phase shift within the audio passband, frequency response is usually determined during the design phase primarily at the grid.
Edits: 07/26/14
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Follow Ups
- 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)