Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then disconnect the charger. The transistor may be a general purpose type.
This circuit was found in the June 1991 issue of Radio Electronics magazine. The circuit uses two...
We find this circuit in an American 1980s documentation. The unijunction transistor may be the...
May 2017 - Mouser Electronics supplies a wide range of sources for LEDs from Mean Well with inputs for...