This is an interesting configuration of the LM317 voltage regulator found in an EDN from the 90s. The circuit uses an optical coupler and is intended to supply constant current to a sensor resistor.
This circuit was found in an old American publication from the 70s. It flashes a warning lamp,...
September 2015 - Mouser Electronics already has in stock the new CCG15S converters 15W from...
This article is from a publication by A. Fanzeres from the 70s. We kept the original text. This...