Buffered Detector (CB6669E)

This circuit was found in 1967 General Electric documentation. The transistors of the time can be replaced by modern equivalents.

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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...