In Reply to: Adjustable cathode bias posted by Frihed89 on November 2, 2015 at 13:49:13:
You might think about using an active cathode bias regulator for this. The LM337 can set the cathode to whatever voltage is required. You could adjust current not only for different tube types, but for an exact value within each family.
Here's the basic idea (not all parts are shown):
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Follow Ups
- Active Bias Regulator - Triode_Kingdom 06:10:23 11/03/15 (1)
- RE: Active Bias Regulator - Frihed89 09:10:00 11/03/15 (0)