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Design And Construction Of A Dark Activated Switch
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This work is aimed at activating a switch or AC lamp at sunset and deactivate it at sunrise.
This Dark activated Switch can trigger a relay to operate an AC lamp at Sunset. The lamp remains on till morning and then turns off. This eliminates the need of switching the Porch lamp or Backyard lamp daily and also helps to light the premises of the house when the occupants are out of station.
The circuit utilizes the light sensing property of LDR to activate the circuit. The LDR (Light Dependent Resistor) has very high resistance as high as 10 Meg ohms in dark which reduces to a few Ohms in bright light.
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TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTS TITLE PAGEAPPROVAL PAGEDEDICATIONACKNOWELDGEMENTABSTRCTTABLE OF CONTENTCHAPTER ONE1.0 INTRODUCTION1.1 BACKGROUND OF THE PROJECT1.2 PROBLEM STATEMENT1.3 AIM/OBJECTIVE OF THE PROJECT1.4 SCOPE OF THE PROJECT 1.5 SIGNIFICANCE OF THE PROJECT1.6 LIMITATION OF THE PROJECT1.7 APPLICATION OF THE PROJECT1.8 METHODOLOGY1.9 PROJECT ORGANISATIONCHAPTER TWOLITERATURE REVIEW2.0 LITERATURE REVIEW2.1 REVIEW OF LIGHT SENSOR2.2 LDR STRUCTURE AND WORKING2.3 REVIEW OF THE MAJOR COMPONENTS USEDCHA ... Continue reading---
CHAPTER ONE - [ Total Page(s): 1 ]BACKGROUND OF THE PROJECTThe controlling of lights such as security light is usually done by the occupant of the house. This is not only precarious but also sometimes results in wastage of power because of the negligence or unusual circumstances on part of the technician in operating the lights on and off. Not only in case of security lights, even for controlling the home appliances like garden or outdoor lights, we can utilize the dark activated switch for automatic switching of the lights base ... Continue reading---
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TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTS TITLE PAGEAPPROVAL PAGEDEDICATIONACKNOWELDGEMENTABSTRCTTABLE OF CONTENTCHAPTER ONE1.0 INTRODUCTION1.1 BACKGROUND OF THE PROJECT1.2 PROBLEM STATEMENT1.3 AIM/OBJECTIVE OF THE PROJECT1.4 SCOPE OF THE PROJECT 1.5 SIGNIFICANCE OF THE PROJECT1.6 LIMITATION OF THE PROJECT1.7 APPLICATION OF THE PROJECT1.8 METHODOLOGY1.9 PROJECT ORGANISATIONCHAPTER TWOLITERATURE REVIEW2.0 LITERATURE REVIEW2.1 REVIEW OF LIGHT SENSOR2.2 LDR STRUCTURE AND WORKING2.3 REVIEW OF THE MAJOR COMPONENTS USEDCHA ... Continue reading---
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ABSRACT -- [Total Page(s) 1]
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