Digital Voltmeter

Project and Seminar Material For Electrical Electronics Engineering EEE

Project and Seminar Material For Electrical Electronics Engineering EEE


Abstract


Digital voltmeter (DVM) is a measuring device used in displaying AC or DC voltage values. DVM displays voltages as discrete numerals instead of a pointer deflection on a continuous scale as in the analogue instruments. An analogue volt meter basically consists of an amplifier connected to a D’ Arsonval meter.

In meter design for measuring DC quantities, the amplifier receives the signal under measurement, amplifies the signal to an indication using a pointer which moves along a calibrated scale.

If the meter is designed to measure AC quantities, a rectifier is inserted in the circuit along with amplifier and D Arsonval movement. It is versatile and accurate measuring instrument that is employed in many laboratory measurements.

This project is divided into five topics, the chapter one is introduction of digital volt meter, chapter two deals with the literature review of the above work.

Chapter three is the main body of the project, principles of operation and the circuit diagram. Chapter four deals with the implementation, testing, soldering and coupling.

Finally, chapter five deals with the recommendation and conclusion of the digital volt meter.


Table Of Contents


Preliminary Page(s)

  • Title page
  • Certification
  • Acknowledgment
  • Abstract
  • Table of content

Chapter one

  • 1.0 Introduction

Chapter two

  • 2.0 Literature review

Chapter three

  • 3.0 Component and function
  • 3.1 Voltage regulator
  • 3.2 Variable resistor
  • 3.3 Resistor
  • 3.4 Micro controller
  • 3.5 ROM instruction memory
  • 3.6 RAM Memory
  • 3.7 The segment display
  • 3.8 Construction and operation (DVM)

Chapter four

  • 4.0 Implementation
  • 4.1 Testing of individual component
  • 4.2 Coupling and soldering
  • 4.3 Precautions

Chapter five

  • 5.0 Conclusion
  • 5.1 Recommendation
  • 5.2 References

Chapter One


Introduction

The measurement helps in the discovering of size, length or amount of particular quantities. In other words there are different measuring devices used in laboratory such as thermometer, voltmeter etc

This project deals on digital voltmeter. A voltmeter is an electronic devices used in the measurement of voltages. A voltmeter can be grouped into two namely: digital and analogue voltmeter.

The digital voltmeter makes use of an analogue to digital converter. These convert the analogue to digital or convert the analogue voltages to binary form. The binary is sent to the decoder, where it is converted to a seven-segment display.

There are several methods by which the readings of a digital instrument can be displayed but the two main types are the LED (light emitting diode) and LCD (liquid cryptal display). Both units consist of seven segments. The LED display devices require more current than the LCDs and so they consume more power.

They are widely used in bench digital voltmeters (DVMS) where power consumption is not a primary consideration. This project consists of developing a digital voltmeter that can solve the problem of abnormalities in measurement by providing an effective output. the design specification of the DVM are expected to have namely;

  • Voltage regulator
  • Variable resistors
  • (ADC) converter
  • Microcontroller
  • Decoder (BCD)
  • A display
  • A probes

The digital voltmeter is grouped according to the type of conversion such as

  • Ramp type
  • Continuous balance
  • Successive-approximation
  • Integrating

An ADC analogue to digital converter) is also known as a dual slope converter or integrating converter. This type of converter is generally preferred over other types because it offers accuracy simplicity in design and a relatively indifference to noise which makes it very reliable. A ramp A/D converter works very much like the counter-ramp. (Continuous balance dvm). The difficulty with ramp-type A/D converter is the long time it takes to count up to higher voltages but the successive approximation A/D converter cuts down the conversion time. The advantages of the successive-approximation are that the digitizing process is faster.


Advantages Of The Digital Meter

  1. The numerical display of the digital meter eliminates parallel
  2. Errors associated with human reading and interpolation are reduced
  3. Digital instruments have automatic range and polarity selection and this reduces the need for training its operators on the usage.
  4. Digital instruments provide output in digital form suitable for further processing, recording or interfacing with computer, printer etc
  5. Finally, accuracy in digital meter is better as readings are often correct to within +0.1% and -0.1% of the true value, while the analogue type may have an error as large as +10%

Chapter Five


Conclsion And Recommendation

5.1 Conclusion

During the execution of this project, we observed that DVM displays voltages as discrete numerals instead of a pointer deflection on a continuous scale as in the analogue instrument. The DVM is an accurate measuring instrument that is employed in many laboratory measurement. It makes use of analogue to digital converter (ADC) and can drive a series of four seven segment LED display directly. The digital voltmeter can be used in measuring AC or DC voltages. The components and the integrated circuit chips should be tested for continuity before soldering and coupling


5.2 Recommendation

The availability of laboratory equipment remains vital and basic in the study of electrical and electronics engineering courses. This will facilitate the learning and comprehensive ability of students, since engineering courses are practical oriented, therefore student should not relent for any reasons to make use of their available laboratory equipments.

Hence, good understanding on scientific and engineering knowledge will make practical exercise and involvement interesting. Therefore, student should involve themselves in practical exercise because it will improve their assimilation the theoretical aspect of engineering and scientific knowledge. Finally, the department should allocate projects at the beginning of the semester to enable the students source for fund and other materials that can help them carry out their projects.


Digital Voltmeter


Project Material Download

3,000 Naira


The complete material will be sent to you in just 2 steps.

Quick & Simple…


Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

FOR CLIENTS OUTSIDE NIGERIA:
Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 

  PAY WITH CRYPTOCURRENCY


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Digital Voltmeter

The complete material will be sent to your email address after receiving your payment information | T & C Apply


  Contact Our Help Desk


You may also like:

⚠️ Need a different topic? Perform a quick search



Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria


Disclaimer


This research material “Digital Voltmeter” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as samphina.com.ng will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”.

samphina.com.ng is only providing this material “Digital Voltmeter” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.