In Reply to: RE: Schottky posted by Eli Duttman on March 31, 2017 at 18:20:44:
Would that filter be part of Jim's "Level II Plus" upgrade? I'd be interested to see the component values, but maybe Jim considers this proprietary info. In any event, I've been thinking along the same lines for my own HK doubler rebuilds (A500 & A700 types). Installing larger value doubler caps and higher current rectifiers is a given, but I'm on the fence about the post-filter treatment. I have a stash of small 500mH / 30 ohm chokes, but I'm not sure yet whether they're optimal for this application (I bought them for use in non-doubler supplies). Anyway, I suspect the limited space in the Cit II would dictate something around 10mH or less, which would also better fit your description of "RF" components. Do the series diodes have equalizing resistors in Jim's design?
I've also been wondering whether it might be effective to configure the doubler filter as a CLC. In other words, the doubler caps would be followed by a small choke, than another filter bank. The second bank would be smaller, just enough to provide isolation from the DCR of the choke for short-term peaks and to ensure that the supply performs as a voltage source at higher frequencies. Luckily, all my rebuilds will be on a new chassis, so space constraints will be only what I make them. :)
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Follow Ups
- RE: Schottky - Triode_Kingdom 10:49:35 04/01/17 (14)
- RE: Schottky - Eli Duttman 12:44:46 04/01/17 (8)
- Hash Filter / Diodes - Triode_Kingdom 07:47:32 04/02/17 (7)
- Hash Filter Model - Triode_Kingdom 08:03:50 04/02/17 (6)
- RE: Hash Filter Model - Eli Duttman 09:57:07 04/02/17 (5)
- Cit II Doubler Filter - Triode_Kingdom 14:52:02 04/02/17 (4)
- RE: Cit II Doubler Filter - Eli Duttman 15:38:49 04/02/17 (3)
- RE: Cit II Doubler Filter - Triode_Kingdom 20:10:46 04/02/17 (2)
- RE: Cit II Doubler Filter - Jim McShane 13:02:13 04/04/17 (1)
- RE: Cit II Doubler Filter - Triode_Kingdom 08:21:30 04/05/17 (0)
- CLC / Snubbers - Triode_Kingdom 12:11:07 04/01/17 (4)
- RE: CLC / Snubbers - Eli Duttman 13:03:21 04/01/17 (3)
- RE: CLC / Snubbers - Triode_Kingdom 13:19:21 04/01/17 (2)
- RE: CLC / Snubbers - Eli Duttman 14:23:35 04/01/17 (1)
- RE: CLC / Snubbers - Triode_Kingdom 14:48:21 04/01/17 (0)