In Reply to: now I am really puzzled ...... posted by vinnie2 on April 26, 2016 at 12:24:23:
"The more I turned the power up on the variac the more the B+ at the plate end of the 20K resistor went down."
It sounds as though B+ at the anode is dropping because the filament is heating and the tube is drawing more current.
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Follow Ups
- RE: now I am really puzzled ...... - Triode_Kingdom 13:17:32 04/26/16 (3)
- RE: now I am really puzzled ...... - vinnie2 14:35:38 04/26/16 (2)
- Filament Emission - Triode_Kingdom 21:31:58 04/26/16 (1)
- RE: Filament Emission - vinnie2 03:28:07 04/27/16 (0)