Design and construction of 45w audio power amplifier

• <p> </p><p>Figure
• 1.1circuit diagram of a 25W Audio Power Amplifier</p><p>Figure
• 2.1Resistor colour band table</p><p>Figure 2.2a Colour code marking on a resistor</p><p>Figure 2.2b Circuit symbol of resisitor</p><p>Figure
• 2.3Circuit symbols of capacitor</p><p>Figure
• 2.4Diode circuit symbol</p><p>Figure 2.5a Formation of potential barrier</p><p>Figure 2.5b Forward biasing a P-N junction diode</p><p>Figure 2.5c Reverse biasing a P-N junction diode</p><p>Figure 2.6a Structure and symbol of p-n-p and n-p-n transistor</p><p>Figure 2.6b Biasing of a transistor</p><p>Figure
• 2.7&nbsp; Structure of an IC </p><p>Figure
• 2.8JRC 4558IC circuit diagram</p><p>Figure 3.1a The power supply circuit diagram</p><p>Figure 3.1b Block diagram of a power supply unit</p><p>Figure 3.2a The Pre-amplifier circuit diagram</p><p>Figure 3.2b The OP-amp audio mixer</p><p>Figure
• 3.3The tone control circuit</p><p>Figure 3.4a A complementary symmetry class B amplifier</p><p>Figure 3.4b The output stage of the public address system</p><p>Figure
• 4.1The circuit layout diagram</p><p>Figure
• 4.2The body construction diagram (case)</p><p>Figure
• 4.6Costing table.</p><p><b>TABLE OF CONTENTS</b></p><p>Title page</p><p>Dedication</p><p>Acknowledgement</p><p>Approval page</p><p>Abstract</p><p>List of tables, graph and figures</p><p>Table of contents</p> <p><b>

Chapter ONE

INTRODUCTION

• </b></p><p>
• 1.1Introduction</p><p><b>

Chapter TWO

LITERATURE REVIEW

• DESCRIPTION OF CIRCUIT ELEMENT</b></p><p>
• 2.1Resistors</p><p>
• 2.2Capacitors</p><p>
• 2.3Diodes</p><p>
• 2.4Bipolar Junction Transistor (BJT)</p><p>
• 2.5Integrated Circuits (ICs)</p><p><b>

Chapter THREE

SYSTEM DESIGN AND IMPLEMENTATION

• PRINCIPLE OF OPERATION</b></p><p>
• 3.1Power supply</p><p>
• 3.2Pre-amplifier</p><p>
• 3.3Tone control</p><p>
• 3.4Power amplifier</p><p><b>

Chapter FOUR

SYSTEM TESTING AND EVALUATION

• CONSTRUCTION AND TESTING</b></p><p>
• 4.1Breadboard/Prototyping</p><p>
• 4.2Circuit layout</p><p>
• 4.3Construction</p><p>
• 4.4Testing and Result</p><p>
• 4.5Packaging</p><p>
• 4.6Costing</p><p><b>

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

• /RECOMMENDATION</b></p><p><b>References</b></p> <br><p></p>