DESIGN AND CONSTRUCTION OF PUBLIC ADDRESS SYSTEM

  • Type: Project
  • Department: Electrical Engineering
  • Project ID: ELE0195
  • Access Fee: ₦5,000 ($14)
  • Chapters: 5 Chapters
  • Pages: 37 Pages
  • Methodology: nil
  • Reference: YES
  • Format: Microsoft Word
  • Views: 1.2K
  • Report This work

For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853
INTRODUCTION
A public address system is an electronics sound amplification and distribution system with a microphone, amplifier and loud speaker used to allow a person to address a large public. The public address system consists of three main parts namely, the microphone (input transducer), amplifier and the loudspeaker (output transducer).
The microphone picks up the sound and convert it to electronic signal in milivolts and this is fed to the amplifier for amplification. In this project, a dual operational amplifier (OP-Amp) 1458 IC is used for the amplifications. The amplifier has two sections; the Pre-Amp and the power –AM. The pre-amp does the first boosting of the input audio signal to a level handleable by the last stage of the amplifier called power amp. This early stage (pre-amp) is designed to give good voltage gain. Hence the pre-amp is referred to as the voltage amplifier. The last amplifier stage is the power amp and is the stage that typically requires most attention; the power efficiency.
After the amplifier stage, the very small input signal is then magnified to a larger version and is fed to the speaker for conversion to sound. The speaker is an electromagnetic device that operates on the principle of electromagnetic induction and with the help of its component converts electrical signal to sound.

TABLE OF CONTENTS
TITLE PAGE i
APPROVAL PAGE ii
DEDICATION iii
ACKNOWLEDGEMENT iv

CHAPTER ONE
1.0 BACKGROUND STUDY/INTRODUCTION 1
1.1 AIMS AND OBJECTIVES OF STUDY 3
1.2 SIGNIFICANT OF STUDY 4
1.3 SCOPE OF STUDY 5

CHAPTER TWO
2.0 LITERATURE REVIEW 7
2.1 RESISTORS 7
2.2 CAPACITORS 9
2.3 TRANSFORMER 12
2.4 OPERATIONAL AMPLIFIER 16
2.5 MICROPHONE 17
2.6 PRE-AMP 20
2.7 POWER-AMP 21

CHAPTER THREE
3.0 SYSTEM OPERATION 22
3.1 CIRCUIT DIAGRAM 22
3.2 BLOCK DIAGRAM 23
3.3 OPERATION PRINCIPLE 23

CHAPTER FOUR
4.0 SYSTEM CONSTRUCTION AND PACKAGING 24
4.1 PHOTOTYPING 24
4.2 COMPONENT MOUNTING 25
4.3 SOLDERING 26
4.4 TESTING 27

CHAPTER FIVE
5.0 SYSTEM TESTING 28
5.1 CONTINUITY TESTING 28
5.2 VOLTAGE TESTING 29
5.3 TESTING WITH OSCILLOSCOPE 29

CHAPTER SIX
6.0 CONCLUSION AND RECOMMENDATION 31
6.1 CONCLUSION 31
6.2 RECOMMENDATION 32
REFERENCE 36
DESIGN AND CONSTRUCTION OF PUBLIC ADDRESS SYSTEM
For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853

Share This
  • Type: Project
  • Department: Electrical Engineering
  • Project ID: ELE0195
  • Access Fee: ₦5,000 ($14)
  • Chapters: 5 Chapters
  • Pages: 37 Pages
  • Methodology: nil
  • Reference: YES
  • Format: Microsoft Word
  • Views: 1.2K

500
Leave a comment...

    Related Works

    ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public addressP.A SYSTEMor ”“ is an electronic amplific ,amplifier and loudspeakers, used to reinforce a given... Continue Reading
    ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address or “P.A SYSTEM” is an electronic amplification system with a mixer  ,amplifier and loudspeakers, used to reinforce a given sound , e.g a person making a speech,... Continue Reading
    ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address or “P.A SYSTEM” is an electronic amplification system with a mixer ,amplifier and loudspeakers, used to reinforce a given sound , e.g a person making a speech,... Continue Reading
    ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public addressP.A SYSTEMor ”“ is an electronic amplific ,amplifier and loudspeakers, used to reinforce a given... Continue Reading
    ABSTRACT It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address or “P.A SYSTEM” is an electronic amplification system with a mixer ,amplifier and loudspeakers, used to reinforce a given sound , e.g a person making a speech,... Continue Reading
    ABSTRACT This project is he design and construction of a voltage inverter system with trickle charging system. This device is design to provide power supply for the need of offices, household etc. In absence of NEPA power supply. It would also prevent harm to our appliances caused by power holding company LTD (NEPA) Random power outage . TABLE OF... Continue Reading
    ABSTRACT This project is he design and construction of a voltage inverter system with trickle charging system. This device is design to provide power supply for the need of offices, household etc. In absence of NEPA power supply. It would also prevent harm to our appliances caused by power holding company LTD (NEPA) Random power outage . TABLE OF... Continue Reading
    ABSTRACT This project is he design and construction of a voltage inverter system with trickle charging system. This device is design to provide power supply for the need of offices, household etc. In absence of NEPA power supply. It would also prevent harm to our appliances caused by power holding company LTD (NEPA) Random power outage . TABLE OF... Continue Reading
    ABSTRACT This project is titled the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices and in homes in the absence of power supply from the national supply authority, NEPA. In order words the device / item serves as a substitute for NEPA which almost monopolises the power supply to... Continue Reading
    ABSTRACT The purpose of this project is to design and construct a car tracker system with code using GSM. A good car attracts everyone including thieves. When it comes to the safety of cars, car owners should be very careful. These days, the market is flooded with many safety devices. Typically, the most successful ones among all is the... Continue Reading
    Call Us Get this work