Constructing Voltmeter Monitor Circuit using LM3914


Posted on Feb 5, 2014

With a few resistors, LEDs and using a LM3914 bar/dot display driver IC we can construct a simple 5V Voltmeter Monitor Circuit which provides TTL-compatible undervoltage and overvoltage warning signals. A complete circuit can be shown in the schematic below


Constructing Voltmeter Monitor Circuit using LM3914
Click here to download the full size of the above Circuit.




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