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DESIGN AND CONSTRUCTION OF AN AUTOMATIC SWITCH-OFF BATTERY CHARGER

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TITLE PAGE

DESIGN AND CONSTRUCTION OF AN AUTOMATIC SWITCH-OFF BATTERY CHARGER

BY

---
EE/H2013/01430
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
SCHOOL OF ENGINEERING
INSTITUTE OF ---

DECEMBER,2018



APPROVAL PAGE

This is to certify that the research work, "design and construction of an automatic switch-off battery charger" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on Electrical and Electronics Engineering has been approved.

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

……………………………….
 Engr. ---
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 and construction of an automatic switch-off battery charger” 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 and construction of an automatic switch-off battery charger” visible for everyone, then the complete material on “design and construction of an automatic switch-off battery charger” is to be ordered for. Happy viewing!!!


ABSTRACT

This work is on an automatic switch-off battery charger based on a 555 timer IC. This smart charger automatically switches off when your rechargeable batteries reach the full charge. The circuit comprises a bistable multivibrator wired around timer IC 555. The bistable output is fed to an ammeter (via diode D1) and potmeter VR1 before it goes to three Ni-Cd batteries that are to be charged.
Thus when the batteries are fully charged to 3×1.2V=3.6V, a voltage higher than this makes transistor T1 to conduct. Transistor T2 also conducts and transistor T3 goes off. The threshold level of timer 555 reaches 6V, which is more than 2/3×VCC = 2/ 3×6=4V, to turn off the timer.
During charging, the threshold level of the timer is held low. The green LED (LED1) glows during charging of the batteries and goes off at the attainment of full charge. This circuit can be used only for 1.2V, 600mAH Ni-Cd rechargeable batteries that require 60 mA of current for 15 hours to charge fully.


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

    1. PURPOSE OF THE PROJECT
    2. AIM OF THE PROJECT
    3. OBJECTIVE OF THE PROJECT
    4. PURPOSE OF THE PROJECT
    5. LIMITATION OF THE PROJECT
    6. ADVANTAGES OF THE PROJECT
    7. PROBLEM OF THE PROJECT
    8. APPLICATION OF THE PROJECT
    9. RESEARCH QUESTION
    10. PROJECT ORGANISATION

CHAPTER TWO
LITERATURE REVIEW

    1. OVERVIEW OF THE STUDY
    2. REVIEW OF THE RELATED STUDY

CHAPTER THREE
3.0     CONSTRUCTION METHODOLOGY
3.1      BASIC OF THE SYSTEM
3.2      BLOCK DIAGRAM OF THE SYSTEM
3.3      SYSTEM OPERATION
3.4      CIRCUIT DIAGRAM
3.5      CIRCUIT DESCRIPTION
3.6     DESCRIPTION OF COMPONENTS USED
3.7      POWER SUPPLY UNIT
CHAPTER FOUR
4.0      TESTING AND RESULTS

    1. CONSTRUCTION PROCEDURE AND TESTING
    2. INSTALLATION OF THE COMPLET DESIGN 
    3. ASSEMBLING OF SECTIONS
    4. TESTING OF SYSTEM OPERATION
    5. COST ANALYSIS

CHAPTER FIVE

    1. CONCLUSION
    2. RECOMMENDATION
    3. REFERENCES

CHAPTER ONE: The complete chapter one of “design and construction of an automatic switch-off battery charger” is available. Order full work to download. Chapter one of “design and construction of an automatic switch-off battery charger”consists of the literature review. In this chapter all the related work on“design and construction of an automatic switch-off battery charger” was reviewed.

CHAPTER TWO: The complete chapter two of “design and construction of an automatic switch-off battery charger” is available. Order full work to download. Chapter two of “design and construction of an automatic infrared faucet controller” consists of the literature review. In this chapter all the related work on “design and construction of an automatic switch-off battery charger” was reviewed.

CHAPTER THREE: The complete chapter three of “design and construction of an automatic switch-off battery charger” is available. Order full work to download. Chapter three of “design and construction of an automatic switch-off battery charger” 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 and construction of an automatic switch-off battery charger” is available. Order full work to download. Chapter four of “design and construction of an automatic switch-off battery charger” 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 and construction of an automatic switch-off battery charger” is available. Order full work to download. Chapter five of “design and construction of an automatic switch-off battery charger” consist of conclusion, recommendation and references.



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