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 old American manual. It is intended for testing SCRs and thermistors using...
This circuit was found in old documentation. It can be made based on modern components. The time...
In the figure we have a monostable that is activated with switch S1 and pressed for an instant. The...