Multi Tube Amplifier (T446E)

Obtained in MIT documentation this circuit uses several tubes to obtain a large gain in the amplification of small signals.

Remote Control Tester (CB25561E)
This circuit checks the infrared emission of a common remote control. We found it in the March 1993...
Tunnel diode trigger (CB21468E)
This circuit was taken from old American documentation. With it, it is possible to generate pulses...
8V x 700 mA Power Supply (CB20212E)
This sophisticated source is low voltage and low current. The circuit found in old documentation may have...