CONSTRUCTION OF AN ELECTRONIC BELL INDICATOR

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ABSTRACT
The Electronic Bell Indicator system is the out come of research work geared towards providing solution to communication difficulty especially in hotels, guest houses and hospitals.
This project work is a four room model connected on a circuit board. It has red indicator light on the body of the circuit casing which indicates power on. It also has an already made tremble bell.
A control switch on the body of the casing acts as a control.
The bulb and the press button and also the bell are all mounted on the circuit board. The electronic bell indicator system functions well and produces good sound.

TABLE OF CONTENTS
CHAPTER ONE
Introduction 1
1.1 Aims and Objectives 2
1.2 Statement Of Problem 3
1.3 Justification Of The Study 4
1.4 Limitation Of The Study 5
CHAPTER TWO
Literature Review 6
2.1 Operational stages of the electronic bell indicator 7
2.2 Power supply 16

CHAPTER THREE
Methodology 17
3.1 Components 17
3.2 Description of the electronic bell indicator 18
3.3 Operational Technique 18
3.4 The Construction 19
CHAPTER FOUR
Trouble Shooting in the Electronic Bell Indicator 21
CHAPTER FIVE
Conclusion and recommendation 23
5.1 Recommendation 23
5.2 Conclusion 23
References 25

CHAPTER ONE

1.0 INTRODUCTION
The problem of lack of efficient means of communication traced from the punitive age, when drums and gongs were the means of sending sound signals had appear to defar solutions. Yet, it has been under continuous modification and improvement.
Whistle, flute, trumpet and some other sound instruments succeeded the era of ordinary drum. They were then seen as better instrument for communication between two persons or groups of people. All these geared towards finding a better and more convenient means of sending sound signals, manually operated mechanical bell signal stroke bell, continuous ring bell, tremble bell and later, electronic bell indicator was sequentially invented as a result of technological improvement.
However, the electronic bell indicator is an electronic device used as a mean of communication in large organizations such as big hotels, guest houses, hospitals etc.
The communication process is between the guest and the receptionist. For instance, if a guest in room one needs the attention of the receptionist, he will press the button or switch in his room and immediately the bell will ring to alert the receptionist, and the bulb will light in the receptionist’s office to indicate the particular room his/her attention is needed.

1.1 AIMS AND OBJECTIVES
We carried out this research project improve the weaknesses described in the system above. The project is all about the design, construction and operation of an electronic bell indicator system. It was

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