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Original Message

RE: 22ohm resistors on hum pot

Posted by Tre' on April 27, 2021 at 09:50:36:

I had 100 ohm hum pots on the 300Bs, AC heated. Then I built LCRCL DC supplies using critical inductance input chokes. At that point it no longer mattered where I set the hum pot, no hum. So I got rid of the hum pots and just use 22 ohm resistors to create the "cathode" connections.

Tre'