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.
Works fine with the diode as I have it as well. Makes sense since the 555 is the sink in this case. I'm using it as a delay to short out a large resistor until the main caps get charged up a bit. This was from the EZ125 KT88 project I did a while back.
