Amplifier with complementary transistors (CB7465E)

This stage of two complementary transistors was found in a 1977 Radio Handbook. Transistors admit current equivalents.

Mechanical Oscillator (CB20496E)
This circuit can be used in decoration or to draw attention, in a “fake” assembly for example. What he...
Security Alarm (CB4866E)
This sophisticated alarm with traditional components was found in an ancient American...
1957 1-Transistor Radio (CB14728E)
We found this AM radio in a 1957 transistor application manual, published by Raytheon. The...