This circuit was found in a 1967 Electronic Design and can be adapted to use modern equivalent components. The circuit provides a symmetrical voltage with the same value as the single input voltage.
This sensitive electroscope uses a MOSFET 3N128 and can detect electrostatic charges of objects....
This circuit was found in a Electronics World of 1968. The integrated circuit is the MC1320P from...
Suggested by General Electric in a 1965 publication this circuit uses a light bulb. Can be changed...