Outstanding Automatic Light Circuit Diagram

We have used reflective type ir sensor modules in this project.

Automatic light circuit diagram. Hence this circuit can consider as a simple light level regulator. Ic lm358 1. When intensity of lights falls below minimum level.

Bc547 npn transistor turn on which in return turns on q2 npn transistor. It consists of a 5v electromechanical relay an optocoupler ic transistor two resistors and two diodes. That is when the incident light from the surroundings reduces it automatically increases the brightness of the led.

Two circuit diagrams have been included. Four 1n4007 diode makes up this full wave bridge rectifier. This circuit adjusts the output light with respect to the ambient light intensity.

This circuit can also be built using microcontroller. Automatic street light control. By this light activated switch in day light will automatically switched off and at night switch on light.

The detailed circuit of the relay module is shown in the following image. Components used in this circuit. The first diagram shows how the circuit can be configured using transistors the second and the third circuits demonstare the principle by using cmos ics while the last circuit explaines the same concept being implemented using the ubiquitous ic 555.

Bc547 transistor the project of digital visitor counter is based. Here you have the circuit diagram of a simple night light on the left side you can observe the voltage divider that will control the mosfet by providing more than 3v on night making the led to light and less than 2v when is daytime turning the mosfet off and closing the led light the mosfet can be changed with a regular transistor but because the mosfet is different than a transistor we will gain some power consumption. It is very interesting project for hobbyists and students for fun as well as learning.