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.
This circuit is from the SGS Integrated Circuits Manual of 1982. The integrated circuit used is...
This circuit can be used as an answering password system in a store, office, or other location....
This operational clamping circuit was found in an American documentation from the 1980s. The...