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In Reply to: Re: Experiments with "UltrPath" connection posted by Pär on March 6, 2001 at 02:15:39:
I thought that the idea of "ultra-path" (hyped up name as far as I'm concerned) was that the b+ to cathode capacitor was the value of the cathode cap divided by the gain of the stage. This way any anomaly of the b+ supply would be divided by the gain and fed into the input in anti-phase to cancel out any effect.It should (if done correcty) help reduce b+ defficiencies for example hum.
I don't think it would be very valid in a PP amp since these unwanted b+ caracteristics are already well cancelled if the OP stage matching and phase splitter are well sorted.
Chris
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Follow Ups
- Re: Experiments with "UltrPath" connection - pp man 03/6/0102:38:18 03/6/01 (12)
- Re: Experiments with "UltrPath" connection - Pär 02:28:03 03/7/01 (0)
- Re: Experiments with "UltrPath" connection - Kurt Strain 11:21:41 03/6/01 (10)
- Re: Experiments with "UltrPath" connection - pp man 17:27:23 03/6/01 (9)
- Re: Experiments with "UltrPath" connection - Kurt Strain 18:19:31 03/6/01 (8)
- But I thought the benefit of UP was - - J Epstein 11:35:20 03/7/01 (3)
- Re: But I thought the benefit of UP was - - BFitz 21:40:09 03/7/01 (2)
- very old news...... nt - pp man 15:49:59 03/9/01 (1)
- Any info on the subject would be appreciated - BFitz 19:30:17 03/9/01 (0)
- Re: But will this not Take the Cathode to GND through the B+... - heath a 20:38:35 03/6/01 (1)
- correction to above, the cap will increase filtering of the cathode... - heath a 20:42:10 03/6/01 (0)
- Re: Experiments with "UltrPath" connection - Paul Barker 18:39:54 03/6/01 (1)
- Re: Experiments with "UltrPath" connection - Pär 02:18:26 03/7/01 (0)
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