This circuit was obtained in a 1967 Raytheon manual. The company's component is an optical coupler with a photo-resistor and a lamp. Transistors support equivalents.
This circuit was found in a 90s Hands On Electronics. It monitors the presence of voltage in a...
This unit gain circuit has a very low output impedance. The circuit is of the Linear Databook of...
Found in 1965 General Electric technical documentation, this half-wave circuit controls shunt type...