ABSTRACT
The very fundamental reason behind this project is to expose students to the very important aspect of private and independent research work. Not only in theories but also subsequent translation of theoretical research work into a practically functional system. This project the design and construction of an automatic generator switch has been done primarily as a proto type design. It could be further modified to switch other application when desired. Eg it can be connected to electric motor, which was attached to a sliding door to achieve automatic control of the door when a person approach, the door or an alarm bell to give a warning signal to the occupant of the house.
This thesis will prove a valuable aid to those who may wish to embark on project involving photo-devices.
1.0 Introduction 1
1.1 Statement of Problems 2
2.1 Historical 5
3.1 Design Method 8
CHAPTER FOUR
Description and Uses 18
4.1 Modification of Resistors 19
CHAPTER FIVE
References 45
Appendix 46
In the earlier days of the electronic age virtually all the operation of electrical and electronics gadgets were manually operated. Nowadays, most of these contrivances are operated atutomically. A typical device that brings about automatic operation of an automatic electronic generator starting switch. This device helps to reduce labour cost instead of some one being employed, switching the circuit on and off light when there is power failure the automatic switch does that automatically. Secondly, the most important application of this device is for security purposes. This is discussed fully in the chapters of this project.
The automatic generator starting switch works solely on the principle that some material such as selenium cadium sulphide. Selenude and indium automnida here their resistance altered when light falls on them i.e. when (illuminated). This leads us to the most vital components of the device known as light dependent resistor (LDR). If properly connected with a transistor or IC as the case may be and eliminated its resistance will kary. This variation in resistance of LDR will cause a subsequent voltage change at the input – of the transistor there by swinging the transistor into on or off state as the case may be.
This device can be used to operate street lights, security lights or even zoom lights automatically i.e. its puts the lights on when night approaches and put it off in the morning. It can be used to activate burglar house when an intruder transposes illumia path. The device can be used to sound warning signals from an alarm for safety of Industrial machines when one crosses the eliminating path. It can be used in automatic car parking light and an automatic curtain this device mainly used or employed to switching on a generator at might light in the morning.
There is the need for the Nigerian scientists and engineers to try out the production and repair of the existing equipment. This is due to the present economic squeeze facing the country and this project will provide a casting solution to power change over during light season and help the public to save energy and labour cost.
Over years the manually operated system has become a problem and people are stranded when there is a project power failure. This is why this work is centered on the design and construction of an automatic electronic generator starting switch. This is fully used in a house that have both NEPA and Generator set. The latest use of field effect transistor (FET) front ends and integrated circuits (IF) channels can scrapp off the use off annual change over during power failure.
This work is limited to the design and construction of an automatic electronic generator starting switch. Some component not available are too obviate this difficulty, several modification were made, where necessary on the circuit diagram.
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