Gemanium Transistors DC Amplifier (CB14775E)

This instrumentation circuit was found in the 1960 transistor application manual. More modern transistors can be used.

Wireless AM Microphone (CB16392E)
This is the project found in a 1981 publication, but it is still viable. It is a simple AM...
CA3080 Amplitude Modulator (CB25134E)
This 2-quadrant modulator circuit was found in the May 1988 issue of Radio Electronics magazine. The...
Transistor Test (CB23604E)
Found in Radio Electronics from May 1959, this transistor tester is quite sophisticated. The...