## Wednesday, March 25, 2015

### Circuit Schematic Led display digital Voltmeter using CL7107

Eltronicschool. - Although in this time when we want to design and build electronic display for our project like for displaying voltmeter, speed, number, and others, we can design using LCD technology, but we also can design it using seven segment that we know before LCD.

In this time we will show you one circuit application for digital voltmeter displaying using seven segment based on CL7107 IC like in figure 1 below. In this circuit, CL7107 be used to drive 4 seven segment for displaying the number of voltmeter value.

Circuit Schematic

Component List

1. R1 = 180k P1 = 20k trimmer multi turn
2. R2 = 22k U1 = ICL 7107
3. R3 = 12k LD1,2,3,4 = MAN 6960 common anode led displays
4. R4 = 1M
5. R5 = 470k
6. R6 = 560 Ohm
7. C1 = 100pF
8. C2, C6, C7 = 100nF
9. C3 = 47nF
10. C4 = 10nF
11. C5 = 220nF
Description

Circuit schematic like in figure 1 above is Circuit Schematic Led display digital Voltmeter using CL7107. This is an easy to build, but nevertheless very accurate and useful digital voltmeter. It has been designed as a panel meter and can be used in DC power supplies or anywhere else it is necessary to have an accurate indication of the voltage present. The circuit employs the ADC (Analogue to Digital Converter) I.C. CL7107 made by INTERSIL. This IC incorporates in a 40 pin case all the circuitry necessary to convert an analogue signal to digital and can drive a series of four seven segment LED displays directly. The circuits built into the IC are an analogue to digital converter, a comparator, a clock, a decoder and a seven segment LED display driver. The circuit as it is described here can display any DC voltage in the range of 0-1999 Volts.

For more description of Circuit Schematic Led display digital Voltmeter using CL7107, you can read more from the original article with click link here.

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