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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE:I checked the tube characteristics of the 6550A... posted by DAK on December 14, 2015 at 17:41:00:
For a triode idling in class A1 (most designs), cathode current is equal to plate current. With pentode and ultra-linear designs, there is some screen current that adds with the plate current, and this total is the cathode current.
Ohm's Law says that V=I*R, we know that R=2600 Ohms. If we arbitrarily say that we want to move up 100V on the X scale, then 100V=I*2600, so we must move down 38mA. Similarly, you can move down 100V on the X scale, then move up 38mA.
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Follow Ups
- RE:I checked the tube characteristics of the 6550A... - Caucasian Blackplate 09:49:30 12/15/15 (3)
- RE: Ok, that makes sense. Now to improve.... - DAK 10:41:10 12/15/15 (2)
- RE: Ok, that makes sense. Now to improve.... - Caucasian Blackplate 10:45:12 12/15/15 (1)
- RE: I have no 2A3... - DAK 12:18:12 12/15/15 (0)
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