Power source for tubes (T384E)

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

FET Tone Control (CB15843E)
This circuit, suggested by National Semiconductor, is a tone control (bass and treble) with high...
Transistor Amplifier (CB18859E)
This circuit from a Japanese publication in 1968 uses germanium transistors from the time like the...
FM transmitter (CB12125E)
This circuit is from a publication by Newton C. Braga in the United States. The transistor can be...