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# Digital Panel Meter – Voltmeter

- Rajkumar Sharma
- 33968
  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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## Comments

- Rafael Ortega

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

  3 years ago
  Reply
- fakhour

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

  3 years ago
  Reply
- fakhour

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

  3 years ago
  Reply
- Barshid Mondal

  electronics

  3 years ago
  Reply
- Marthinus Vogel

  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.

  3 years ago
  Reply
  - admin

    Hi, 1.2V zener is a standard value and you may use another package also.

    2 years ago
    Reply
- Tauhiduzzaman

  Dear,
  Admin.
  I am a big fan of your site. Please upload another Digital Panel Meter that range will be 0 to 100 volt. i will be grateful to you.

  2 years ago
  Reply
  - admin

    Thanks for your kind words. You can use a voltage divider on the input to scale your voltage on the 0-100mV range

    2 years ago
    Reply
- Ray Anthony Pizarro

  hi can I used this in VFD tubes?

  1 year ago
  Reply
  - admin

    No, this IC is designed to be used with 7-segment LED displays.

    1 year ago
    Reply

### Leave a Reply Cancel reply

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