battery monitor circuit


Posted on Feb 6, 2014

Here is a battery monitor circuit which can be used to monitor the voltage of 12V lead acid batteries such as car batteries. The circuit is built around the LM3914 IC and some external components with 10 LEDs which will indicate the voltage level. Two equipment are required for adjusting the circuit for 12 volt battery, one is lab power supply and


battery monitor circuit
Click here to download the full size of the above Circuit.

second is digital volt meter. First you have to connect the digital volt meter to the pin 4 and pin 6 of the IC and adjust the variable resistor VR2 for a reading of 1. 2 volts and make VR1 and VR3 on their center settings now if the span between VR1 ends equal to 4. 5V then the circuit is ready to use.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Two-wire Lamp Flasher
    Frequency Modulator and Tuning Circuit
    170W Class D Amplifier schematic diagram
    ISL6315 Two-Phase Multiphase Buck PWM Controller with MOSFET Drivers Integrated (No Droop)
    EE-8 Field Telephone
    Real-Time Energy Monitor with Arduino and LabVIEW
    DIY Intercom Design Thread 4
    Universal Four-Digit Keypad-Operated Switch - Construction Details
    A Christmas lights circuit
    Capacitive load drive circuit diagram of the MAX4106 4107



    Top