This circuit was found in a 1967 US documentation. It shows how to build a gain control by digital signals. The circuit can be used as a shield. FET can be a modern equivalent.
This circuit is from the Motorola Linear Databook of 1990. The circuit controls a Triac from a...
This circuit was obtained from Maxim documentation. The circuit has 4.5 and 5.5V thresholds for...
This circuit for high power xenon lamps was found in the November 1974 issue of Radio Electronics...