Digital Panel Meter – Voltmeter

Rajkumar Sharma
61.599 Views
moderate
Tested

Digital Panel Meter performs digital processing on or conversion and display of voltages, currents, other analog signals, and pulse signals. This project is based on popular ICL 7107 IC, which is analog to digital converter and has been designed to drive 7 segment LED display. The ICL7107 is high performance, low power, 3, 1/3 digit A/D converter. Included are seven segment decoders, display drivers, a reference, and a clock. This DPM project may be used in a wide variety of configurations Full scale reading of +/- 199.9mV (200mV)

Features

Supply 5V DC @ 80mA.
Range 0 to 199.9mV (200mV)
Low Current consumption
Low input leakage current because external reference
Single supply operation
On board Jumpers for range display
Auto Zero and auto polarity within IC
Supply Input CN2 5V DC
Test Voltage CN1 0-200mV
PR1 Preset for reading calibration.

Shematic

Parts List

PCB

Downloads

Digital_Panel_Meter.pdf

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10 Comments

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Rafael Ortega

6 years ago

Excelente. Muy diactico. Para nosotros los hobbistas, tiene mucho valor. Estoy seguro que de construirlo, aprenderas mucho. Gracias

fakhour

6 years ago

thank you for showing us how to connect the power to the aboratoir 0 to 35v is very important please

fakhour

6 years ago

Thank you to show us a diagram how to connect the voltmeter to a power of aboratoir 0 to 35v is very important please

Barshid Mondal

6 years ago

electronics

Marthinus Vogel

6 years ago

Being rather new in the electronics game, I would love to build this display to work with my self built 0 to 30 volt adjustable power supply.
If I find it difficult I will order the kit if available.
Hope I can find the 1.2v zener in a to92 package, but suppose a normal one will do.
Thanks Electronics-Lab.