12V Battery Checker Circuit


Posted on Feb 4, 2014

This is a 12V battery checker circuit that uses 3 LEDs that light up at their respective voltages. The red LED lights up when the battery voltage is between 8 to 10V, the orange one at voltages between 10. 5V to 12V and the green one when the battery voltage is above 12. 5V. This is a tried and tested battery checker circuit using one NPN and one PNP


12V Battery Checker Circuit
Click here to download the full size of the above Circuit.

transistor. A PCB is given along with the schematic.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Brick-wall lowpass audio filter needs no tuning
    PCB Exposure Box with Countdown timer (ATMEGA8)
    Simple continuity checker
    Colpitts harmonic oscillator 100Mhz
    Simple-tesla-coil
    connect 4000
    Wireless switch using arduino and a mac circuit
    100W amplifier circuit
    Car battery charger Automative car and motorcycle schematics
    Four-Channel Oscilloscope Adaptor
    High voltage (120V), converting familiar fast (120V Shu us) power MOSFET Amplifier circuit
    Plus resistive and capacitive silicon tube regulator phase trigger circuit



    Top