ICL7107 / ICL7106 - Digital Voltmeter


Posted on Feb 5, 2014

This digital voltmeter is ideal to use for measuring the output voltage of your DC power supply. It includes a 3. 5-digit LED display with a negative voltage indicator. It measures DC voltages from 0 to 199. 9V with a resolution of 0. 1V. The voltmeter is based on single ICL7107 chip and may be fitted on a small 3cm x 7cm printed circuit board. The c


ICL7107 / ICL7106 - Digital Voltmeter
Click here to download the full size of the above Circuit.

ircuit should be supplied with a 5V voltage supply and consumes only around 25mA. Brightness of the LED display segments can be varied by adding or removing 1N4148 small signal diodes that are connected in series. Use two 1N4148 diodes for higher LED display brightness. The voltmeter can also be configured to measure different voltage ranges and display higher voltage resolution. Replacing 1M with 100K resistor will allow to measure 0 - 19. 99V voltages with 0. 01V (10mV) accuracy.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    make 6v 4ah automatic battery charger
    control relay with infrared circuit
    ve170 monitor repair with led
    Small TV Transmitter Circuit
    Knightrider lights for model cars
    Audio Mixer Circuit
    OSA Link Cable Schach computer
    Astable Multivibrator
    Home-Built Pulsed Multiple Gas (PMG) Laser
    Direction Sensitive Light Barrier
    The use of monolithic power IC 6 to W audio power amplifier



    Top