6AC7 Amplifier (T450E)

Obtained in MIT documentation, this 4-stage circuit has high gain for small signals. The power supply sources 150 V.

Dual Driver (CB25549E)
This circuit drives symmetrical loads through a single transistor. The circuit is from a Radio...
Code Practice Oscillator (CB4165E)
This unijunction transistor oscillator is intended for Morse code practice. The circuit is from an...
Zero crossing switch (CB21367E)
The purpose of this circuit found in a 1967 GE SCR manual is to control a heating element. The SCR...