<p> </p><p>Cover page</p><p>Title page I</p><p>Approval II</p><p>Dedication III</p><p>Acknowledgement IV</p><p>Abstract V</p><p>Table of content VI</p><p>List of figures VII</p><p><strong>

Chapter ONE

: INTRODUCTION</strong></p><p>1.0 Background of the stud……………………….2</p><p>1.1 Statement of problem…………………………..</p><p>1.2 Aims and objectives……………………………4</p><p>1.3 Scope of work …………………………………4</p><p>1.4 Importance of work……………………………..4</p><p>1.5 Organization of study …………………………6</p><p><strong>

Chapter TWO

: LITERATURE REVIEW</strong></p><p>2.0 Brief History of Inverters………………………8</p><p>2.1 Inverter application and uses ………………….8</p><p>2.2 Types of inverter ………………………………9</p><p>viii</p><p>2.3 Inverter versus other related appliances………………..10</p><p>2.3.1 Generator and inverter………………………………….10</p><p>2.3.2 Inverter and ups…………………………………………12</p><p>2.4 Mode of operation of an inverter……………………….13</p><p>2.4.1 When the AC mains supply is available………………..14</p><p>2.4.2 When the AC mains supply is not available ……………14</p><p>2.5 Component Analysis ……………………………………16</p><p>2.5.1 Ideal diodes ………………………………………………16</p><p>2.5.2 Resistors…………………………………………………….18</p><p>2.5.3 Capacitors………………………………………………..19</p><p>2.5.4 Transistors………………………………………………..20</p><p>2.5.5 Voltage regulator …………………………………………..22</p><p>2.5.6 Transformer …………………………………………….23</p><p>2.5.7 Relay…………………………………………………….24</p><p>2.5.7.1 Battery………………………………………………..26</p><p><strong>

Chapter THREE

: SYSTEM OPERATION</strong></p><p>3.0 Block diagram and operation…………………………….27</p><p>3.1 When the AC mains supply is available…………………….27</p><p>3.2 When the AC mains supply is unavailable………………….28</p><p>3.3 Complete circuit diagram ………………………………..33</p><p>3.3.1 System operation using circuit diagram……………..34</p><p><strong>

Chapter FOUR

: DESIGN ANALYSIS AND IMPLEMENTATION</strong></p><p>4.0 Design specifications and requirements ……………35</p><p>4.1 Design of the power supply unit ……………………35</p><p>4.2 Design of 50 Hz oscillator…………………………..37</p><p>4.3 Days (hours) of autonomy …………………………39</p><p>4.4 Depth of discharge……………………………………40</p><p><strong>

Chapter FIVE

: TESTING AND RESULT</strong></p><p>5.0 Drive or amplifier test………………………………..43</p><p>5.1 Oscillator circuit test…………………………………43</p><p>5.3 Transformer test………………………………………44</p><p>5.4 Entire system testing………………………………….44</p><p>5.4 Battery charging evaluation ………………………….44</p><p>5.5 System evaluation ……………………………………44</p><p>5.6 Packaging …………………………………………….45</p><p>5.7 Cost of project ……………………………………….46</p><p>5.8 Maintenance cost …………………………………….49</p><p>5.9 Running cost …………………………………………49</p><p><strong>CHAPTER SIX: CONCLUSION</strong></p><p>6.0 Conclusion ……………………………………………50</p><p>6.1 Recommendation …………………………………….50</p><p>6.2 Problem encountered …………………………………51</p><p>6.3 Limitation/ Constraints………………………………..51</p><p>6.4 Suggestion for further improvement ………………….51</p><p>Reference</p><p><strong>LIST OF FIGURES</strong></p><p>Fig 2.0 Ideal diode structure</p><p>Fig 2.1 Symbol of zener diode</p><p>Fig 2.2 Symbol of light emitting diode</p><p>Fig 2.3 symbol of electrolytic capacitor</p><p>Fig 2.4 Paper capacitor</p><p>Fig 2.5 Variable capacitor</p><p>Fig 2.6 Symbol of enhancement mosfet F</p><p>ig 2.7 Symbol of npn transistor</p><p>Fig 2.8 Symbol of voltage regulator (7808 Ic)</p><p>Fig 2.9 Core type transformer</p><p>Fig 2.10 Symbol of a transformer</p><p>Fig 3.1 Block diagram of basic inverter</p><p>Fig 3.2 Complete circuit diagram of 500 watts/inverter</p> <br><p></p>