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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: now I am really puzzled ...... posted by Palustris on April 26, 2016 at 15:14:17:
I went back and measured between pin 2 (plate) and pin 4 (cathode) on the 26 with the variac at full mains and got 6vdc. I also measured B+ at the wire on the opt where B+ goes into the opt. It was 280vdc between there and ground.
The cathode resistor on the 26 is 820 ohms and goes from the center wiper of the hum pot to ground.
Edits: 04/27/16
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