• 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.

Tube PWM driver

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Sch3mat1c

Sch3mat1c

Member
Joined 2003
seventransistorlabs.com/
Yeah, so I got bored. Here's a five tube PWM generator circuit!

Depending on the output level, it should be basically ready to slap onto an SE output stage, actually. Just add a plate filter choke so the switching noise has somewhere to go.

I have no idea if the hysteresis resistors are enough, if I ever breadboard this I guess I'll find out. :)

Tim
 

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