USER'S INSTRUCTIONS: The project work you are about to view is on "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller". Please, sit back and study the below research material carefully. This project topic "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" have complete 5(five) Chapters. The complete Project Material/writeup include: Abstract + Introduction + etc + Literature Review + methodology + etc + Conclusion + Recommendation + References/Bibliography.Our aim of providing this "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" project research material is to reduce the stress of moving from one school library to another all in the name of searching for "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" research materials. We are not encouraging any form of plagiarism. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works.

---

TITLE PAGE

 

BY

---
--/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---

---

APPROVAL PAGE

This is to certify that the research work, "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.

By
---                                                     . ---
Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

……………………………….
---
External Invigilator

---

DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

---

ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

---

PROJECT DESCRIPTION: This work "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" research material is a complete and well researched project material strictly for academic purposes, which has been approved by different Lecturers from different higher institutions. We made Preliminary pages, Abstract and Chapter one of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" visible for everyone, then the complete material on "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" is to be ordered for. Happy viewing!!!

---

This work is on design of a digital voltmeter for AC/DC voltage measurement using PIC microcontroller. This design uses the PIC microcontroller, rectifier, voltage divider and seven segment displays to complete the desired measurement. This meter is calibrated for the measurement of upto 500 volts. Here we are using PIC microcontroller because this is having an internal ADC, however any other microcontroller can be used with or without internal ADC. But separate ADC is required if microcontroller used is without internal ADC.
Digital voltmeters can measure a range of alternating current (AC) voltages, direct current (DC) voltages, or both AC and DC voltages. Devices typically display between three and seven digits.

 

TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
CHAPTER ONE
INTRODUCTION
1.1      BACKGROUND OF THE PROJECT

• PROBLEM STATEMENT
• AIM AND OBJECTIVE OF THE PROJECT
• SIGNIFICANCE OF THE PROJECT
• SCOPE OF THE PROJECT
• LIMITATION OF THE PROJECT
• PROJECT ORGANISATION

CHAPTER TWO
LITERATURE REVIEW

• OVERVIEW OF A VOLTMETER
• TYPES OF VOLTMETER
• HISTORICAL BACKGROUND OF DIGITAL VOLTMETER

CHAPTER THREE
DESIGN METHODOLOGY

• SYSTEM ARCHITECTURE
• SYSTEM BLOCK DIAGRAM
• CIRCUIT DIAGRAM
• OPERATION OF THE PROPOSED SYSTEM
• SYSTEM FLOWCHART
• SOFTWARE IMPLEMENTATION
• SYSTEM CODE
• DESCRITION OF MAJOR COMPONENTS USED

CHAPTER FOUR
TESTING AND RESULTS

• CONSTRUCTION PROCEDURE AND TESTING
• INSTALLATION OF THE COMPLET DESIGN 
• ASSEMBLING OF SECTIONS
• TESTING OF SYSTEM OPERATION
• SYSTEM SAFETY

CHAPTER FIVE

• CONCLUSION
• RECOMMENDATION
• REFERENCES

 

CHAPTER ONE

• INTRODUCTION

1.2                                           BACKGROUND OF THE STUDY
Digital voltmeter is an instrument that measure voltage or voltage drop in a circuit. Digital voltmeter uses solid-state components and display values digitally. Typically, Digital voltmeters (digital volt meters) can be used to locate excessive resistance that may indicate an open circuit or ground. They are also used to identify low voltage or voltage drops that may indicate a poor connection. The positive lead is connected to the circuits positive side and the negative lead is connected to the circuits ground. The digital voltmeters internal resistance is the impedance, which is usually expressed in ohms per volt. This amount is relatively high in order to prevent the device from drawing significant current and disturbing the operation of the circuit being tested. The sensitivity of the Volt meter determines the range of voltages that digital voltmeters can measure.
Digital voltmeters can measure a range of alternating current (AC) voltages, direct current (DC) voltages, or both AC and DC voltages. Some digital voltmeters can capture minimum and maximum voltages called spike readings. Others measure the root mean square (RMS), a range of frequencies, or the signal power in decibels.
This work is aimed at building a digital AC/DC voltmeter (DVM) which measures an unknown input voltage by converting the voltage to a digital value and then displays the voltage in numeric form through an LCD.

1.2                                   PROBLEM STATEMENT
Digital voltmeter was built to overcome challenges seen in analogue meter. Analog voltmeters have pointer across a scale in proportion to the voltage of the circuit. Analogue voltmeter have interpolation errors and have moving parts. Whilst digital meters are more accurate than analog multimeters. They reduce reading and interpolation errors. In digital meters, parallax errors are eliminated. Digital multimeter displays have no moving parts. This makes them free from wear and shock failures.

1.3                                             OBJECTIVE OF THE PROJECT
The main aim of this work is to construct digital voltmeter for AC/DC measurement, which is one of the general requirements for any electrical circuit. The objectives are:

• To determine the value of an AC or DC voltage in a digital form.
• To increase accuracy and repeatability this circuit is designed using a microcontroller which also minimize the other electronic circuitry.
• To  improve the overall performance of the voltmeter

1.4                                         SIGNIFICANCE OF THE PROJECT
Carrying out this work is a way of making student involved conversant with the programming of PIC microcontroller controller.
This study will help readers of the work to understand the advantages of digital voltmeter over analogue. This implementation is work will help the student to know how to build a

 rugged and very much reliable voltmeter.

 

1.5                                                 SCOPE OF THE PROJECT
The scope of this work covers building digital voltmeters give a numerical display of voltage by use of an analog to digital converter. A digital voltmeter (DVM) measures an unknown input voltage by converting the voltage to a digital value and then displays the voltage in numeric form. DVMs are usually designed around a special type of analog-to-digital converter called an integrating converter.

1.6                                           LIMITATION OF THE PROJECT

• The LCD display depends on a battery or external power source. When the battery is low, the display will be dim, making it difficult to read.
• There is a voltage limitation. If it is increased beyond the limit, the meter will be damaged.
• They are expensive due to high manufacturing cost.

1.7                                        PROJECT WORK ORGANISATION
The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:
Chapter one of this work is on the introduction to a digital voltmeter. In this chapter, the background, significance, objective limitation and problem of a digital voltmeter were discussed.
Chapter two is on literature review of a digital voltmeter. In this chapter, all the literature pertaining to this work was reviewed.
Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.
Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.
Chapter five is on conclusion, recommendation and references.

CHAPTER FIVE
5.1                                                           CONCLUSION
This project has been successfully designed, constructed and also tested for the specified range. This voltmeter is calibrated with 0.1volt of resolution upto 99.9 volts and of 1volt of resolution from 100 volts onwards. It is relatively cheaper voltmeter, comparing to those present in the market. This research will enhance the possibility of using digital voltmeters to improve micro, small and medium scale industries in the country.
The voltmeter can utilize a variety of test probes to connect to the circuit or device under test. Crocodile clips, retractable hook clips, and pointed probes are the three most common attachments. Tweezer probes are used for closely spaced test points, as in surface-mount devices. The connectors are attached to flexible, thickly insulated leads that are terminated with connectors appropriate for the meter.
The banana jacks are typically placed with a standardized center-to-center distance of 0.75" (19.05mm), to allow standard adapters or devices such as voltage multiplier or thermocouple probes to be plugged in.
Clamp meters clamp around a conductor carrying a current to measure without the need to connect the meter in series with the circuit, or make metallic contact at all.

5.3                                                    RECOMMENDATION
The device (digital ac/dc voltmeter) has been designed, tested and system was able to respond to its operation. This work was built with quality wiring and contains many connections, I recommend that if failure occur, it should be troubleshoot by a qualify personnel along with the circuits diagram.
Working on this topic (digital ac/dc voltmeter) as my project is a good idea and it comes at the right time. I am suggesting that this particular topic should also be given to other students both in higher and lower class.

 

---

CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" is also available. Order full work to download. Chapter two of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" consists of the literature review. In this chapter all the related work on "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" was reviewed.

CHAPTER THREE: The complete chapter three of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" is available. Order full work to download. Chapter three of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" is available. Order full work to download. Chapter four of"design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" is available. Order full work to download. Chapter five of "design, construction and analysis of a digital ac/dc voltmeter using pic16f877a microcontroller" consist of conclusion, recommendation and references.

 

---

To "DOWNLOAD" the complete material on this particular topic above click "HERE"

Do you want our Bank Accounts? please click HERE

To view other related topics click HERE

To "SUMMIT" new topic(s), develop a new topic OR you did not see your topic on our site but want to confirm the availiability of your topic click HERE

Do you want us to research your new topic? if yes, click "HERE"

Do you have any question concerning our post/services? click HERE for answers to your questions

---

For more information contact us through any of the following means:

Mobile No :+2348146561114 or +2347015391124 [Mr. Innocent]

Email address :engr4project@gmail.com

Watsapp No :+2348146561114

---

COUNTRIES THAT FOUND OUR SERVICES USEFUL

Australia, Botswana, Canada, Europe, Ghana, Ireland, India, Kenya, Liberia, Malaysia, Namibia, New Zealand, Nigeria, Pakistan, Philippines, Singapore, Sierra Leone, South Africa, Uganda, United States, United Kindom, Zambia, Zimbabwe, etc
Support: +234 8146561114 or +2347015391124

Watsapp No :+2348146561114

Email Address :engr4project@gmail.com

---

FOLLOW / VISIT US VIA: