The LED car voltmeter (2)


Posted on Feb 5, 2014

Here is to introduce the LED car voltmeter which is made of the op-amp LM312 and LED, it can display 6 gears of voltages, 10-15V, each gear is 1V. The working principle of the circuit The LED car voltmeter consists of the regulator circuit, Vref circuit, sampling voltage circuit and LED display drive circuit, see as figure 7-76. The regulator circui


The LED car voltmeter (2)
Click here to download the full size of the above Circuit.

t consists of the 3-terminal regulator circuit IC, potentiometer RP and resistor R4.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    16 G— 2 LCD Volt Meter & Ampere Meter With PIC Schematic Diagram
    tonefrequency detector circuit
    12F675 based Brushed Motor ESC
    PULSED MODULATED LASER
    V3.0 MS Build With Pics
    Temperature Sensor
    Fundamentals of Electrical Engineering and Monostable Multivibrator
    AM radio circuit chip



    Top