DESIGN AND CONSTRUCTION OF AN AUDIO AMPLIFIER

ABSTRACT           The topic of this project is “ Audio Amplifier”. The research embarked upon this study or project by using both primary and secondary source of data.           The main instrument used for data collection are: Modern electronics circuit Design. By David J. Commer. Electronics Devices. By Floyd Electrical Installation Theory and Practice. By Dennelly E.L. Electronics IV. By Dr. Green Electronics II. By Ejinofor C.O.         Radio and Transmission “A”. BY D.C. Green Electronics e Fault Diagnosis. By Loveday. The research discovered that this fays people normally have to address large gatherings data time and an efficient means of communication has to be used, if not, the message can not be heard by people at long range. The researcher recommended t hat use of amplifier should be made effective so that people can address large gathering at a time so that were ever you are you will be communicated.                        TABLE OF CONTENT Title page certification Certification Acknowledgement Abstract Table of content CHAPTER ONE:         Introduction Preamble 1.2     Definition of terms .A. CHAPTER TWO:        Description of components 2.1     power transformer 2.2            Resister 2.3            Capacitor 2.4            Integrated circuit 2.5            Semi conductor diodes 2.6            Transistors CHAPTER THREE:    Power supply 3.1            Circuit diagram 3.2            Operation of transformer 3.3            Rectification and smoothening CHAPTER FOUR:       Power amplifier 4.1            Power amplifier circuit 4.2            Biasing and stabilization CHAPTER FIVE: Coupling of circuit stage 5.1            The overall circuit diagram 5.2            Tone circuit 5.3            Coupling method CHAPTER SIX: Casing and packaging 6.1            Casing and packaging materials 6.2            Back connection 6.3            Conclusion     CHAPTER ONE INTRODUCTION PREAMBLE           These days’ people normally have to address large gathering at a time and an efficient means of communication has to be used, if not, the massage would not be understood. This fact led us into this project which was explained fully in due course. The project is DEFINITION OF TERMS AMPLIDIER           The basic principle in the operation of an audio amplifier involves the increase of a low signal to a very high spinal so that it is head by human ear. The increase of a low spinal involves the use of transistor. The transistor is an active device in amplification, and plays a very big roll in the design and contraction, of the amplifier. The success in the use of transistor depends on how well the transistors are based. The method of biasing transistors are discussed as we progress in this write up. SPEAKER (EXTERNAL LOUDSPEAKER)           A speaker can be defined as a transducer used to convert electrical signals into a non- electrical signal I .e (sound). It is, mage up of a permanent magnet and diagram which vibrate the sounding air in accordance with the electrical signals passed through it. It is the cast stage in the functioning of the system, where the amplified signal is heard by the listener. A times speaker is said to be an electro-acoustic frequency signal to corresponding sound signals. It converts the varying amplitude dc into sound wave.   Get the Complete Project Material Now!!!