In Reply to: What would be a typical value for the bias adjustment pot of a 845 amp? posted by DAK on April 20, 2016 at 14:09:35:
There is little current required to set tube bias, so the value of the pot is just so you don't overload the bias circuit. A 1K ohm pot will cause a -100 volt bias supply to dissipate 100mA which is way too much. A 10K pot with a 10K resistor to limit the ability to set zero bias voltage will present 20K which will draw 5mA This is probably a good level.
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Follow Ups
- RE: What would be a typical value for the bias adjustment pot of a 845 amp? - Chip647 20:12:41 04/20/16 (2)
- RE: What would be a typical value for the bias adjustment pot of a 845 amp? - DAK 21:12:57 04/20/16 (1)
- RE: What would be a typical value for the bias adjustment pot of a 845 amp? - Tre' 19:07:30 04/21/16 (0)