Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: Bypass a cathode bypass capacitor, is it a good idea? posted by cktc on February 2, 2022 at 01:02:15:
If space is available, the DC link caps are the way to go, but they are large in size. If that is not an option, a bypass is worthwhile. In one of my amps, there is a 100mfd cathode bypass on the first stage. I bypassed it with a 5.0 mfd Multicap film and foil polypropylene. An audible improvement resulted.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups Full ThreadTopic - Bypass a cathode bypass capacitor, is it a good idea? - cktc 01:02:15 02/2/22 (117)
- Thank you all for all the excellent inputs. (Nt) - cktc 22:43:52 02/2/22 (0)
- RE: Bypass a cathode bypass capacitor, is it a good idea? - deathtube 667 12:14:41 02/2/22 (0)
- more specific question - cktc 10:31:38 02/2/22 (78)
- RE: more specific question - Thermionic27609 14:26:35 02/2/22 (77)
- RE: more specific question - drlowmu 17:23:24 02/2/22 (76)
- There is much more to it than that - Tre' 18:45:57 02/2/22 (75)
- RE: standard engineering formula - deathtube 667 07:01:13 02/3/22 (73)
- RE: standard engineering formula - Tre' 08:19:59 02/3/22 (72)
- Would cathode bypass capacitor at input stage affect output impedance? - Lew 10:10:56 02/4/22 (4)
- No - Tre' 15:33:06 02/4/22 (1)
- I asked because I understood you to be suggesting otherwise - Lew 06:50:05 02/6/22 (0)
- RE: Would cathode bypass capacitor at input stage affect output impedance? - 91derlust 12:36:56 02/4/22 (1)
- RE: Would cathode bypass capacitor at input stage affect output impedance? - Lew 13:46:51 02/7/22 (0)
- RE: 15uF ... main bypass cap value for SE amplifiers - deathtube 667 16:13:52 02/3/22 (62)
- RE: 15uF ... main bypass cap value for SE amplifiers - gusser 16:20:34 02/3/22 (61)
- RE: 15uF ... main bypass cap value for SE amplifiers - deathtube 667 16:47:25 02/3/22 (60)
- RE: 15uF ... main bypass cap value for SE amplifiers - tube wrangler 11:41:05 02/4/22 (1)
- RE: 15uF ... main bypass cap value for SE amplifiers - rage 14:07:13 02/4/22 (0)
- RE: 15uF ... main bypass cap value for SE amplifiers - Tre' 18:23:43 02/3/22 (57)
- RE: 15uF ... main bypass cap value for SE amplifiers - deathtube 667 03:01:43 02/4/22 (56)
- RE: 15uF ... main bypass cap value for SE amplifiers - PakProtector 05:39:06 02/4/22 (55)
- RE: linear design ... - deathtube 667 07:39:24 02/4/22 (54)
- RE: linear design ... - PakProtector 07:51:56 02/4/22 (53)
- RE: effects box ... - deathtube 667 08:42:47 02/4/22 (52)
- Why yes... - PakProtector 14:48:59 02/4/22 (6)
- RE: Why yes... - pictureguy 15:58:28 02/4/22 (5)
- NO matter what company, Automatically subtract 3db... has worked well for 30 years-nT - Cleantimestream 09:39:01 02/5/22 (1)
- RE: NO matter what company, Automatically subtract 3db... has worked well for 30 years-nT - pictureguy 14:14:51 02/7/22 (0)
- RE: Why yes... - PakProtector 16:14:18 02/4/22 (2)
- RE: Why yes... - pictureguy 14:17:52 02/7/22 (0)
- RE: Why yes... - pictureguy 20:56:14 02/4/22 (0)
- Subjective Criteria - drlowmu 11:44:22 02/4/22 (44)
- RE: Subjective Criteria - PakProtector 03:22:35 02/5/22 (43)
- RE: Subjective Criteria, and the word " defect " - drlowmu 07:56:09 02/5/22 (42)
- RE: the "concepts" are not defects ... - deathtube 667 09:08:24 02/6/22 (40)
- RE: the "concepts" are not defects ... - 91derlust 16:56:18 02/7/22 (7)
- RE: exclusive club ... - deathtube 667 05:35:55 02/9/22 (6)
- I think you have it backwards.... - PakProtector 09:14:31 02/9/22 (5)
- RE: I think you have not changed ... - deathtube 667 06:17:07 02/10/22 (1)
- RE: I think you have not changed ... - PakProtector 04:28:23 02/11/22 (0)
- RE: I think you have it backwards.... - tube wrangler 10:10:15 02/9/22 (2)
- yep...backwards - PakProtector 14:46:05 02/9/22 (0)
- RE: I think you have it backwards.... - Tre' 10:28:18 02/9/22 (0)
- RE: the "concepts" are not defects ... - PakProtector 15:14:14 02/6/22 (31)
- RE :answer the call of greatness - deathtube 667 15:39:37 02/6/22 (30)
- Vague grandiose statements (one could liken to Camelot) will not augment your credibility - Cleantimestream 05:11:50 02/7/22 (25)
- RE: the credibility was established at RMAF ... - deathtube 667 07:10:19 02/7/22 (24)
- The truth is self evident that you have not heard mine nor many other amps built by those on this forum ergo, - Cleantimestream 08:29:43 02/8/22 (12)
- RE: it was your design ... - deathtube 667 08:55:47 02/8/22 (11)
- RE: it was your design ... - drlowmu 10:41:41 02/8/22 (3)
- RE: it was your design ... - Cleantimestream 11:15:27 02/8/22 (2)
- RE: it was your design ... - drlowmu 12:17:02 02/8/22 (1)
- RE: it was your design ... - GEO 20:06:44 02/8/22 (0)
- RE: it was your design ... - Tre' 09:29:13 02/8/22 (6)
- RE: it was your design ... - drlowmu 10:18:05 02/8/22 (1)
- RE: it was your design ... - Tre' 10:44:12 02/8/22 (0)
- I think ya forgot a feature - PakProtector 09:37:04 02/8/22 (3)
- I did fail to include that short comming. - Tre' 10:25:42 02/8/22 (2)
- RE: I did fail to include that short comming. - drlowmu 11:09:28 02/8/22 (1)
- RE: I did fail to include that short comming. - PakProtector 16:53:12 02/8/22 (0)
- RE: the credibility was established at RMAF ... - drlowmu 10:53:02 02/7/22 (10)
- RE: the credibility was established at RMAF ... - awsjr 05:53:39 02/8/22 (8)
- RE: the credibility was established at RMAF ... - drlowmu 09:03:18 02/8/22 (7)
- You forgot a wee bit... - PakProtector 17:12:35 02/8/22 (5)
- RE: You forgot a wee bit... - rage 07:19:15 02/9/22 (4)
- RE: MV rectifier + flywheel ... - deathtube 667 08:16:21 02/9/22 (1)
- RE: MV rectifier + flywheel ... - rage 09:42:35 02/9/22 (0)
- RE: You forgot a wee bit... - PakProtector 07:30:37 02/9/22 (1)
- RE: You forgot a wee bit... - rage 07:47:13 02/9/22 (0)
- RE: the credibility was established at RMAF ... - awsjr 10:17:41 02/8/22 (0)
- RE: the credibility was established at RMAF ... - PakProtector 14:51:13 02/7/22 (0)
- RE: RE :answer the call of greatness - PakProtector 16:23:49 02/6/22 (3)
- Having some trouble finding something happybear? - PakProtector 01:35:48 02/8/22 (2)
- RE: finding something ... - deathtube 667 08:51:29 02/8/22 (1)
- back to our regurly scheduled effects box worship... :) - PakProtector 09:44:21 02/8/22 (0)
- RE: Subjective Criteria, and the word " defect " - PakProtector 08:11:16 02/5/22 (0)
- RE: standard engineering formula - tube wrangler 15:43:21 02/3/22 (1)
- RE: standard engineering formula - PakProtector 16:02:00 02/3/22 (0)
- Simple answer! - gusser 13:03:26 02/3/22 (1)
- Oh my... :) - PakProtector 14:36:52 02/3/22 (0)
- RE: There is much more to it than that - drlowmu 19:44:47 02/2/22 (0)
- RE: Bypass a cathode bypass capacitor, is it a good idea? - drlowmu 09:27:28 02/2/22 (0)
- Space may dictate your choice - garymuffley 02/2/2209:16:09 02/2/22 (0)
- Swap it for a DC Link cap - andy evans 01:30:18 02/2/22 (0)
- RE: Bypass a cathode bypass capacitor, is it a good idea? - Triode_Kingdom 01:26:40 02/2/22 (32)
- RE: Bypass a cathode bypass capacitor, is it a good idea? - Stephen R 15:29:27 02/2/22 (31)
- "It can make things worse." I agree - Tre' 18:55:58 02/2/22 (30)
- Thank you for the link, Tré - 1973shovel 06:30:04 02/3/22 (27)
- Sorry, but I'm skeptical - Triode_Kingdom 00:03:14 02/4/22 (22)
- "get a few more opinions before busting out the credit card" - 1973shovel 08:03:54 02/4/22 (10)
- RE: "get a few more opinions before busting out the credit card" - Triode_Kingdom 21:20:09 02/4/22 (9)
- Hmm, choke loaded low cap value has appealed to my engineering side... - Cleantimestream 10:50:26 02/5/22 (0)
- RE: "get a few more opinions before busting out the credit card" - Tre' 07:41:24 02/5/22 (5)
- RE: "get a few more opinions before busting out the credit card" - Triode_Kingdom 09:47:50 02/5/22 (4)
- RE: "get a few more opinions before busting out the credit card" - Tre' 11:36:00 02/5/22 (3)
- Conduction angle - Triode_Kingdom 00:06:53 02/6/22 (2)
- RE: Conduction angle - Tre' 08:54:33 02/6/22 (1)
- RE: Conduction angle - Triode_Kingdom 10:24:30 02/6/22 (0)
- RE: "get a few more opinions before busting out the credit card" - Tre' 07:23:36 02/5/22 (0)
- RE: "consider using inexpensive switchers" - 1973shovel 06:01:37 02/5/22 (0)
- RE: Sorry, but I'm skeptical - Tre' 06:56:39 02/4/22 (10)
- A different comparison... - Triode_Kingdom 19:55:15 02/4/22 (6)
- RE: A different comparison... - Tre' 07:19:00 02/5/22 (5)
- RE: A different comparison... - Triode_Kingdom 09:21:22 02/5/22 (4)
- I found the voltage - Tre' 09:55:27 02/7/22 (3)
- RE: I found the voltage - Triode_Kingdom 21:36:22 02/10/22 (2)
- look at the difference in the wave form - Tre' 17:12:09 02/11/22 (0)
- RE: I found the voltage - rage 05:15:32 02/11/22 (0)
- RE: Sorry, but I'm skeptical - rage 11:21:29 02/4/22 (0)
- RE: Sorry, but I'm skeptical - Thermionic27609 07:21:08 02/4/22 (1)
- RE: Sorry, but I'm skeptical - Tre' 07:48:29 02/4/22 (0)
- RE: Thank you for the link, Tré - Tre' 08:34:53 02/3/22 (3)
- RE: Thank you for the link, Tre' - 1973shovel 19:33:52 02/3/22 (2)
- RE: Thank you for the link, Tre' - Tre' 19:42:13 02/3/22 (1)
- "a lot of capacitance" - 1973shovel 06:56:11 02/4/22 (0)
- Yup. Lynn wrote a ton of good stuff on that site. - Stephen R 23:17:27 02/2/22 (1)
- RE: Yup. Lynn wrote a ton of good stuff on that site. - Tre' 08:39:37 02/3/22 (0)
Follow Ups
- Space may dictate your choice - garymuffley 02/2/2209:16:09 02/2/22 (0)