CONSTRUCTION OF AN ELECTRONIC BELL INDICATOR
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
- Aims and Objectives                                                    2
- Statement Of Problem                                                  3
- Justification Of The Study                                            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
- 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.
