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.
We found this circuit in the September 1992 issue of Radio Electronics magazine. It can be...
This circuit adds an amplifying transistor that can supply loads of up to 250 mA. The circuit is...
This circuit was found in a 1964 Electronic Design. The transistor may be a current equivalent of...