Simple Charging Circuit Monitor with 555 and LM3914

This is a simple charging circuit monitor that indicates whether the battery is being charged or not. This circuit consists of two general IC, transistor NPN, ten led 5mm, and a few discrete components. It can be divided into two parts voltmeter and a display controller. be.low the schematic of simple charging monitor by using IC 555 an LM3914.




 At the circuit above, the voltmeter is