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 August 1992 issue of Radio Electronics magazine. The circuit can be...
This simple circuit with LDR was found in the Radio Electronics magazine of July 1992. Any...
Wien Bridge This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends...