This circuit was found in a 1980s documentation for amateur radio. The circuit makes use of components of the era, but modern equivalents can be used.
When the equipment powered by the SO1 socket is turned on, the SO2 socket is automatically...
We found this voltmeter in a 1977 Radio Shack documentation. The integrated circuit can be the...
This circuit was found in a 1994 publication. Its purpose is to time the operation of a welder (or other...