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what is a basic formula for this? It has been a long time and I don't remember the values I used for this. I want to bias a filament 20 volts above true ground. This is DC. The filament DC voltage is 1.25 volts, a miniature tube with a current draw of .01 amp for the filament. Or, can it be done for this tube?Thank you.
iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
Edits: 10/22/24 10/22/24 10/22/24 10/22/24 10/22/24
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Topic - I have biased tubes in the past above true ground but. . - John PA 09:38:58 10/22/24 (7)
- RE: I have biased tubes in the past above true ground but. . - Tre' 07:42:26 10/26/24 (3)
- RE: I have biased tubes in the past above true ground but. . - PakProtector 08:39:46 10/29/24 (2)
- I wondered about that. That's a different conversation. - Tre' 12:08:01 10/30/24 (1)
- beats me - PakProtector 02:30:34 11/02/24 (0)
- what tube is that? nt - Tre' 20:55:28 10/25/24 (0)
- RE: I have biased tubes in the past above true ground but. . - Chip647 15:23:45 10/25/24 (0)
- You might have better luck in Tube/DIY -nt - E-Stat 08:29:47 10/25/24 (0)