5 to 200 seconds timer (CB21401E)

This circuit was found in a 1967 RCA documentation. The semiconductor components are from the time, and modern equivalents can be tried.

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Stabilized Colpitts Oscillator (CB22395E)
This Colpitts oscillator with JFET has the amplitude of the signals stabilized by a diode. The...
Random Pulse Generator (CB12642E)
This circuit can be used with the CIR12642E TTL Roulette, or other game circuits that must draw...
Overvoltage and Undervoltage Relay (CB17023E)
This conventional window detector circuit was found in a 1995 documentation. The trigger points, that...