Simple Ni-cad charger Circuit Diagram uses constant current LEDs to adjust charging current. It makes use
of LEDs that pass a constant current of about 15 mA for an applied
voltage range of 2-18 V. They can be paralleled to give any multiple of
15 mA and they light up when current is flowing.The circuit will charge a single cell at 15, 30 or 45 mA or cells in. series up to the rated supply voltage limit (about 14 V).
Simple Ni-cad charger Circuit Diagram
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