• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Class A2 Direct MOSFET Coupled SE

THX for that, I finally got back on this last night. I've rearranged the data so that the Vf is continuously ascending.
That way a reasonably continuous curve results. It fits square law well. So that would add some distortion while in
the cathode of triode or pentode. Has anyone tried D% measured results while comparing to a bypassed
cathode resistor? With diode biasing the operating point will drift as the tube ages.
 

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