Heater for photo development (CB21390E)

Found in a 1965 General Electric documentation, this circuit is intended to control a 150 W lamp used as a heating element for developing photos.

| Clique na imagem para ampliar |

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...