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Automatic Night Light Switch Circuit

Project Summary

This is a circuit which turns ON our domestic lights automatically when it is dark.

Project Description

In Automatic Night Light Switch Circuit, we design a circuit which turns ON our domestic lights automatically when it is dark.

Automatic Night Lamp Switch Circuit Diagram:

Figure:1 Automatic Night Lamp Circuit

Figure 1  Automatic Night Lamp Circuit

This circuit has two photo sensing devices which detect two levels of intensities. Light dependent resistors are used as photosensitive devices in this circuit. The light dependent resistor used with an op-amp as comparator detects the level of light intensity. The U1 IC 741 produces an output which is the first light intensity and the U2 IC741 detects the second light intensity. These two light intensities are used to calculate when the lights should be On and when they should be Off without producing unambiguous signals.

For complete information about this circuit, Click on Automatic Night Light Switch

Tags: Automatic Night Light Switch

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