Battery Meter for 12 v Batteries

This is simple yet accurate battery meter for any 12v Batteries.

- All led's are represent different voltage level from low to high ( Order is right to left)

-Following image shows the circuit in working Condition.

- You can put a push button on terminal connection if you want, so you don's have to remove connection from battery and when you want to check battery level just press the button.

 - Main component in this circuit is IC and Registers. All register values must be same as given is circuit diagram or voltage lavel for particular led will be changed.

-Circuit Diagram

- Component List :

1. LM339N Comparator IC (1)
2. 1N4735A Zener Diode (1)
3. 1N4148 Standard Switching Diode (1)
4. Tantalum capacitor 0.1u (1)
5. Register 2.2k (5)
6. Register 1.0k (4)
7. Register 4.7k (2)
8. Register 10.47k (1)
9. Register 10.0k (1)
10. LED (5) use different color whatever you like.

- Download

1. PDF Formate
2. Multisim file (simulation created using multisim software,You need multisim to open this file)