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In Reply to: RE: Aikido with D3a?? posted by Chip647 on March 09, 2017 at 08:46:19
What is the B+ voltage you guess for Aikido with D3a in triode?
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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
WOW!! 200mA! What a current?
Refer to 5687 Aikido, it has several different B+ voltage for Aikido with 5687> What are their differences? Which one do you prefer?
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