This 1980s circuit was found in Motorola documentation. The circuit uses period components that admit of equivalents. Light feedback in a modern version can be done by optical fiber.
This circuit was found in an Electronics Now. Its purpose is to generate clock pulses for a...
This circuit is from an American magazine Popular Electronics of March 1991. The circuit produces both...
This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and...