Peak sensor with tunnel diode (CB21514E)

This circuit was found in old General Electric documentation. The circuit makes use of a unijunction programmable transistor.

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1-minute delay with Triac (CB21406E)
We found this circuit in a 1965 General Electric manual. The controlled load depends on the Triac...
Programmable Timer (CB10000E)
This circuit has two programming positions which, with the capacitor employed allows intervals of 1 minute...
Slow Start for Model Railroad (CB4723E)
This circuit simulates the actual departure of a train as the speed increases slowly. The power...