Light sensitive switch under Repository Circuit Diagram The light-sensitive switch is an ingenious electronic device that responds to the intensity of light falling on it, enabling the automatic switching of lights. In this article, we will explore a simple, cost-effective, and user-friendly light-sensitive switch circuit utilizing the popular op-amp 741. The basic components of a light sensitive switch circuit diagram include a visible light sensor, a counter, a comparator, and a trigger logic circuit. Together, these components measure the level of light by comparing the current light intensity to an input level, and then trigger a light switch when the light level drops below the set threshold. It automatically switches ON lights when the light goes below the visible region of our eyes. ( e.g in evening after Sunset ). it automatically switches OFF lights when light fall on it ( e.g in morning ) , by using a sensor called LDR (Light Dependent Resistor) which senses the light just like our eyes.
Increasing the resistance will make the circuit more sensitive to light changes. Building a light sensor switch circuit is a simple yet effective way to introduce yourself to the world of electronics and automation. By understanding the basic components, designing the circuit, and following the construction guidelines, you can create a Using this circuit, an electrical device or an appliance like a light bulb or a fan for example, can be controlled based on the intensity of the light near the circuit. Principle behind the Circuit The main principle of this circuit is based on the working of the LDR Sensor i.e. the Light Dependent Resistor and to switch ON or OFF the light
Light Activated Switch Circuit using LDR Sensor Circuit Diagram
The 2SC2481 is an NPN transistor often used in low-power switching applications and amplifier circuits. In this DIY project, we will use the 2SC2481 to build a simple light-sensitive switch. Thisโฆ
The 330K Ohm Resistor and LED can be replaced with virtually anything to trigger a signal or an event. For example, a 9 Volts Relay would be used to make an absence-of-light activated switch. To make this circuit operate in reverse (the LED turns on when there is light), simply just exchange the positions of the Variable Resistor and the LDR. Demonstration of a simple light sensitive switch made with an op-amp configured as a comparator. Obtain schematics for Free at http://clydelettsome.com/blog/
