This circuit consists of an electrostatic sensor that can check if a cable is energized by simply approaching it. The circuit is from an Electronics Now from December 1998.
Found in American documentation, this switch is based on the 4093. The load will determine the...
This circuit was found in a 90s Electronic Design. The integrated circuits are from that time....
The circuit shown was obtained from a 1976s publication for radio amateurs. Its purpose is to...