This circuit, which can be used as a shield, was found in General Electric documentation from the 1980s. The coupler uses a photo-SCR. The circuit admits equivalent components.
This circuit has a high input impedance and low output impedance, serving as an adapter for...
We found this simple warning circuit for car blinkers (arrow) in a 1987 publication. The relay must...
This 1987 circuit has a very interesting concept. It powers a second set of rhythmic lights from...