TABLE OF CONTENTS

Chapter ONE

INTRODUCTION

1.0 Background

1.2 Aim and objectives

1.3 Problem statement

1.4 Solution approach

1.5 Scope of study

1.6 Thesis outline

Chapter TWO

REVIEW OF LITERATURE

2.0 Need for Regulated Supply

2.1 Unregulated D.C. Power Supply

2.2 Regulated Power Supply

2.3 Types of Voltage Regulators

2.4 Zener Diode Voltage Regulator

2.5 Zener Diode as Reference Element

2.6 Transistor series voltage regulator

2.7 Series Feedback Voltage Regulator

Chapter THREE

METHODOLOGY

3.1 Block Diagram

3.11 The solar panel

3.12 Series Feedback Voltage Regulator (SFVR) Circuitry

3.13 Control Circuitry

3.14 Rechargeable Battery

3.15 Final Regulator

3.2 Principle of operation of the solar powered mobile phone charger

3.3 Determination Component sizes

Chapter FOUR

CONSTRUCTION AND TESTING

4.1 Introduction

4.2 Circuit Construction and Selection of component values

4.21 Determination of duration of hours rechargeable battery will last

4.3 Casing Construction

4.4 Assembling of constructed work

Chapter FIVE

CONCLUSION AND RECOMMENDATION

Conclusion

REFERENCES