DESIGN AND CONSTRUCTION OF A LOW VOLTAGE (± 15 VOLTS) POWER SUPPLY UNIT
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CHAPTER ONE
INTRODUCTION
A low voltage power supply unit is basically al unit that can supply a (variable) d.c voltage output according to the designer(s) specifications. In this case the d.c voltage output is 15v (full wave rectification). (The condition of a (variable) d.c power unit distinguishes it from the power supplied by the National Electric) power Authority (NEPA) or the likes.
BACKGROUNDOF THE STUDY (AIM/OBJECTIVE)
a low voltage power supply unit is designed generally for use in portable electrical and for electronic appliances, namely, portable radio, prano, charging of batteries used in emergency lights and also orders, and for changing of hand sits batteries its importance in battery changing is more obvious due to the frequent NEPA cut.
STATEMENT OF PROBLEM
A low voltage power supply unit arrangement consists basically of pains of diodes (4) for full rectification, capacitor(s) for filtration and transformer for the voltage transformation.
Consequently, this project will focus on low voltage power supply unit with full rectification also known as full wave rectification (Bride rectifier) is designed and constructed.
TABLE OF CONTENTS
Cover Page – – – – – – – – – –
Title Page – – – – – – – – – –
Certification – – – – – – – – – –
Dedication – – – – – – – – – –
Acknowledgement – – – – – – – – –
Abstract – – – – – – – – – –
Table of Content – – – – – – – – –
Chapter One: Introduction
Background of the Study – – – – – –
Statement of the Problem – – – – – –
Objectives of the Study – – – – – – –
Research Questions – – – – – – –
Research Hypotheses – – – – – – –
Significance of the Study – – – – – – –
Scope/ Limitation of the Study – – – – – –
Definition of Terms – – – – – – –
Chapter Two: Review of Related Literature
2.1 Introduction – – – – – – – – –
2.2 Conceptual Framework – – – – – – –
2.3 Theoretical Framework – – – – – – –
2.4 Empirical Review – – – – – – – –
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