THE DESIGN AND CONSTRUCTION OF A DC TO AC POWER INVERTER INCORPORATED WITH AN AUTOMATIC SWITCH OVER BATTERY CHARGER

By

MEGWARA ALBERT U. EE/H2003/030

Presented To

Department of Electrical/Electronic Engineering

32 Pages 3,245 Words 1,890 Views Microsoft Word Format No. of Chapters: 1 to 5 Chapters

ABSTRACT

The system on this thesis is a DC â€" AC converter, which is an apparatus which is used for conversion of Direct Current to Alternating Current or signal.

In our country, this equipment is not all that in used not because it is not important but because people never give it a thought as per the construction and design.

It is meant, use with a 12v lead acid battery. If itâ€™s in a car for example a suitable output voltage of 230v AC is obtainable.

This output voltage of 230v AC can be used for powering small electrical appliances such as light, electric fans, radio, soldering iron etc.

However, it is worthwhile that AC operated with this appliance is nothing comparable to the AC generated by big generators. This is so because the voltage and power are less in terms of AC generation duration. This appliance is therefore suitable for short time replacement for the real AC generation especially in the remote areas and install where electrical appliances are sold and the need might arise for it to be tested and certified good.

TABLE OF CONTENT

APPROVAL PAGE

DEDICATION

ACKNOWLEDGEMENT

TABLE OF CONTENT

CHAPTER ONE

1.1 Introduction

CHAPTER TWO

INVERTER AND THEIR OPERATION

2.1 Emitter

2.2 Base

2.3 Collector

2.4 Transistor Biasing

2.5 Important Biasing Rule

2.6 Transistor Currents

2.7 Summing Up

2.8 Transformer fundamentals

CHAPTER THREE

OPERATION AND DESIGN CONSIDERATIONS

3.0 Features of the Device

3.1 Dc supply unit

3.2 Inverter Unit

3.3 Step up Transformer Unit

3.4 Filter Unit

3.5 Triggering Unit

3.6 Battery Charging Unit

3.7 Switching Unit

3.8 Design

3.9 Inverter

3.10 Operation of the Device

3.11 General Circuit Diagram

CHAPTER FOUR

4.0 Construction

4.1 Packaging

CHAPTER FIVE

5.0 Conclusion

5.1 Performance of the Designed

5.2 Power Inverter

5.3 Reference

32 Pages 3,245 Words 1,890 Views Microsoft Word Format No. of Chapters: 1 to 5 Chapters

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