This circuit was found in a 1967 General Electric manual. It is intended for the control of high voltage Nixie pipes used at the time. SCRs may be equivalent.
This voltage regulator for low current applications (a few milliamps) is from a European...
Found in old documentation this circuit uses the NOR ports of 4001. The circuit has the frequency and...
This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms...