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I assembled the circuit, but only third 7seven segment is glowing, rest are glowing with very low brightness and its unreadable. Thanks for pointing the mistake. C7 and C6 are nF filter capacitors not shown in schematic 3 years ago. 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. Do not have much experience. Hi I would like to measure the output voltage in mV range, and my input voltage will be given by the Piezoelectric diodes pressure sensor.

Will this circuit work on breadboard? Can I measure AC voltage with this, pls help 3 months ago. I am confusing about the supply voltage for this project.

Digital voltmeter using ICL – Electronic Circuits and Diagrams-Electronic Projects and Design

You will need to add an additional voltage divider to scale the Vdc to 2Vdc and be sure to use high value resistors to limit the current consumption on the resistor divider. Hi all, I made a PCB using a artwork sent by cs7107bp gmail.


Use RS website xs7107gp data sheets. In case if your final drive device can give high output with suffucient drive current, then you require a common cathode disply such that when ever the disply input goes high that particular segment will glow.

(PDF) CS7107GP Datasheet download

Please anyone help me. Previous post Next post. At this clock rate there are about three different readings per second.

In this page we will use this circuit datasbeet discuss for improvements and we will introduce some changes based on original schematic. During the first stage and for a given period the input voltage is ddatasheet, and in datashest output of the integrator at the end of this period, there is a voltage which is directly proportional to the input voltage. In order to understand the principle of operation of the circuit it is necessary to explain how the ADC IC works. I completly removed R4, but it is not working linearely… Anybody tryed to use the V range?

Led display digital Voltmeter http: The difference with is that has a hold pin to enable LED display freeze function.

Leave a Reply Cancel reply. For calibration short input and wind 20K pot until the reading is JUST and calibration is spot on on all ranges with good stability. Hi Rohit the basic meter is designed to measure 0 — Hi Mahamoud please go through the intersil datasheet for your requirement http: This is discussed here: So avoid touching the IC pins with your bare hands.


Are you shure that decreasing the value for R4 you increase cs7017gp range?

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You can use any common anode display. Try to adjust P1 when there is no voltage input so it displays zero on 7-segment displays. If yes, what changes should I apply?

This type of converter is generally preferred over other types as it offers accuracy, simplicity in design and a relative indifference to noise which makes it very reliable. Can I use this circuit to measure V AC? Feel free to send your PCB image to john circuitstoday. This second phase is known as the negative slope period and its duration depends on the output of the integrator in the first period.

Sir is it necessary to use MAN led display or I can use any common anode single digit display 2 years ago.

Audio oscillator circuit Simple datasheft generator circuit Digital thermometer circuit Capacitance meter using LM Frequency to voltage converter using LM Yes, you can use ICL These are the input of the IC as you can see from its diagram.