ghaytweyhtoo

Digital voltmeter

Overview

This design is a voltmeter based on the analog-to-digital conversion chip ICL7107
ICL7107 is an analog-to-digital conversion chip with high precision; segment code output can directly drive the digital tube without any program.
This project mainly includes ICL7107 drive circuit, four common anode digital tube circuits, etc.
5V power supply, the voltage to be measured is connected through another terminal
When using it for the first time, you need to confirm the position of the decimal point. You only need to determine the position of the jumper cap. The adjustable resistor is used to accurately adjust the display of the digital tube against the voltmeter. The button is a test function. When pressed, the display is displayed. All will be cleared
Lichuang Mall is out of stock, I will give you my purchase link: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.45a52e8de2wSO4&id=522578788174&_u=t2g9rbgkd388
The next step will be to proof the PCB, and then update the PCB blank board photos, finished product photos, test pictures, etc.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-04 08:30:39

PB5.0 always compiles incorrectly, need help.
Error: Ram start overlaps rom binary Fatal error hit, exiting... makeimg: FATAL ERROR: Command returned non-zero exit code 1 (dec). makeimg: FATAL ERROR: Command returned non-zero exit code 1 (dec). T
Theory and practice
I am a student and have been working in the electronic laboratory of our School of Electronics for two years. Here I will tell you about what I have seen and thought about in the past two years! I saw
Applicable to various battery over-discharge protection circuit designs
Applicable to various battery over-discharge protection circuit designs
Why are the serial ports on a newly purchased PC one male and one female?
Recently, I encountered a situation where a computer in my workplace was connected to an automatic device, which used a serial port for communication. Another serial port was used to send data from th
Tips for using advanced functions of PROTEL99SE
Tips for using advanced functions of PROTEL99SE
Everyone uses TI Stellaris, the price/performance ratio is beyond your imagination
I have been busy with an Internet of Things project these days. Because it is a project for the public security system, it is sensitive to price. The first phase of the project is a small batch of 4K,

Datasheet More

Circuits More