~Kit 79C---> LDR Light/Dark Activated Relay Switch~ (06/10/2010)
Author: Our Diaries // Category:Some briefing and purposes about our project~~
Problem Statement:
In our daily life, we usually meet with the problem where we want to switch on or off certain electronic devices for a certain time period when the light intensity is changes, such as the outside lighting on driveways, security system, counters, night lamp and so on. We need some devices that will control the electronic devices smartly by varying the light intensity, thus a LDR light or dark activated relay switch which required a light-dependent source (LDR) as the input of the circuit that will varies certain parameters in the circuit.
Main Objectives :
To build a LDR light or dark activated relay switch circuit that can be implemented in real world applications.
Sub-objectives :
i) To learn how the values of the potentiometer can change the sensitivity of the Light Dependent Resistor (LDR).
ii) To learn the function of each components in the circuit design in varying the result of the output of the circuit.
iii) To learn how to ease the circuit building by using circuit simulation software.
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