Stabilized 2,000 Gain Amplifier (CB6643E)

This circuit was found in a 1960s documentation, providing a 2,000 gain amplified output.

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Varicap Noise Generator (CB24708E)
Using the name of varactor this circuit was found in the Radio Electronics magazine of July 1982....
Transistor Tester (CB13990E)
We found this circuit in a 1960 Radioarama magazine. The instrument tests common general-purpose transistors...
100 W Amplifier with Symmetrical Power Supply (CB23982E)
This circuit uses an RCA module from the time. The circuit is from a Radio Electronics magazine from...