This simple circuit is powered by the logic circuit itself. Components are still common, although they were obtained from somewhat old documentation.
April 2017 - Mouser Electronics has the bq25890H integrated circuit consisting of a single 5 A...
This circuit was obtained in a 90s Electronic Design. The circuit uses components from that time....
Found in a 90s documentation, this circuit triggers the SCR when there is an overvoltage in order...