TRICOLOR_LED_NiCd_CHECKER

Published:2009/7/14 1:14:00 Author:May | From:SeekIC

This circuit uses a window comparator and a bicolor LED. VR1 and VR2 set the high and low trip points of the comparators, respectively. The LED shows green for highest voltage (good), yellow for intermediate, and red for low voltage (bad). The circuit can be calibrated for other voltages and is generally useful as a voltage indicator.



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