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 circuit was found in a 1968 General Electric manual. The circuit is for 3 A motors but can be...
This circuit was found in a 1980s English publication, but can still be easily assembled by the...
This interesting constant current source circuit was found in the September 1989 issue of Radio...