In Reply to: RE: Aikido with D3a?? posted by Tube_Maniac on March 9, 2017 at 22:33:50:
That tube has an amplification factor of 77. How much gain are you needing?
150V on the plate and 20mA would not be a bad point. 8 tubes at 20mA will cause you to have a very stout +200mA B+ supply. a 320v B+ would work.
Use the recommended cathode resistor of 470 to generate the 10 v of bias for around 20mA at 150-160 volts across each tube
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Topic - Aikido with D3a?? - Tube_Maniac 03:31:47 03/09/17 (4)Follow Ups
- RE: Aikido with D3a?? - Chip647 19:50:33 03/10/17 (1)
- RE: Aikido with D3a?? - Tube_Maniac 05:50:07 03/12/17 (0)