We attempt to turn on the REC-30 high voltage power supply. They call it a rectifier actually, not a power supply. It's supposed to deliver up to 0.6A at 200V. The monstrous vintage 1930 design uses beautiful giant Thyratron tubes . Will it glow or will it blow?
See Ken Shirriff's in-depth article about the inner workings of this supply: http://www.righto.com/2018/09/glowing...