In Reply to: RE: The "Green God" ... posted by FlaCharlie on November 2, 2021 at 06:46:01:
Using a 6BQ5 as you did makes more sense as the drive requirements are less demanding than a 6AQ5.
Local feedback makes sense with the 2 chassis format.
The schematic posted on DT667's project page failed to include the feedback network - a .1uf mylar film cap + 200k resistor in series from plate to grid of the 6AQ5.
The most difficult thing about the "Green God" was painting the chassis, the rest is a standard console circuit design that borrows a bit from the RH series using of low noise zeners for the screen circuit.
DT667
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