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.
This monostable multivibrator with signals in phase opposition was found in October 1986 Radio...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...
We found this circuit in a Harris Semiconductor Databook of 1977. The circuit can be implemented with any...