This circuit with SCR is from a Radio Electronics magazine from September 1965. It is a commercial control from Heathkit for controlling universal motors.
This circuit is intended to trigger a TTL door or flip-flip from a signal coming from an SCR....
This circuit found in a 1988 documentation, uses a piezoelectric or crystal capsule as a...
This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The...