This constant current source for high voltage loads was obtained from a 1967 General Electric documentation. The components are of the time, but allow equivalents.
This circuit was found in a 1998 documentation. It uses a sensor that detects the magnetic band of...
This circuit is from a Radio Electronics magazine from August 1990. The indicator module is of a...
We found this small audio amplifier in the November 1999 issue of Electronics Now magazine. The...