LED Flasher Unijunction (CB22144E)

The frequency of this circuit depends on the capacitor. The unijunction transistor can be the 2N2646.

Transmission line driver (CB6927E)
Using transistors at the time, this circuit was found in a 1967 Ferranti documentation. The...
Tone dialers (CB9468E)
These circuits were found in Exar documentation from the 90s. The circuits use both a small...
Automatic lamp control (CB6847E)
Found in Radio Electronics, this circuit is intended to activate the lighting system of garages...