[GK] spends most of the time so far talking about the high voltage power supply design. For the particular tubes he had on hand he needed +200V, -400V, -550V, and 6.3VAC for the CRT heater.

It’s not entirely clear why [Advanced Tinkering] needs a 50,000-volt power supply ... final push to the final voltage is thanks to a three-stage Cockcroft-Walton multiplier made with ...