LDR Sensor
Original price was: 100.00৳ .80.00৳ Current price is: 80.00৳ .
It works on the principle of photoconductivity whenever the light falls on its photoconductive material, it absorbs its energy and the electrons of that photoconductive material in the valence band get excited and go to the conduction band and thus increasing the conductivity as per the increase in light intensity.
Also, the energy in incident light should be greater than the bandgap gap energy so that the electrons from the valence band got excited and go to the conduction band.
The LDR has the highest resistance in dark around 1012 Ohm and this resistance decreases with the increase in Light.
Description
Introduction
An LDR (Light Dependent Resistor) sensor is an electronic component used to detect light intensity. It changes its resistance according to the amount of light falling on its surface. LDR sensors are commonly used in automatic lighting systems, solar-powered devices, smart electronics, and light detection projects.The resistance of the LDR decreases when light intensity increases and increases when the environment becomes dark.
Features
- Detects light intensity
- Low cost and simple design
- Easy interfacing with Arduino and other microcontrollers
- Low power consumption
- Fast response to light changes
- Compact and lightweight
- Analog output based on light lev
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