Power source for tubes (T384E)

This experimental bench source was found in a modern book on tubes. The components used can be easily obtained.

Sensor Darlington Touch (MSB060)
Two transistors connected in direct engagement, so that the first emitter is connected to the base of...
Class A amplifier 2N3055 (CB10542E)
This circuit was published in a 1977 English magazine, but remains current, since we can assemble it...
Diodes Test (CB10811E)
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...