SCR mechanical drive (CB6572E)

This contact or reed switch actuation was found in a 1964 Electronic Design. The circuit can be used with sensors and the triac is load dependent.

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Simple Timer 555 (CB19025E)
This timer was found in the Texas Instruments 1996 linear applications manual. The relay must be...
Photoelectric comparator (CB7508E)
This circuit compares two light intensities, providing the indication on an analog instrument. The...
Transistor Voltmeter (CB16238E)
This circuit was obtained in a 1983 publication. It is a 1-transistor voltmeter, capable of...