Description

LDR (Light Dependent Resistor)

The Light Dependent Resistor (LDR) is just another special type of Resistor and hence has no polarity. Meaning they can be connected in any direction. They are breadboard friendly and can be easily used on a perf board also. The symbol for LDR is just as similar to Resistor but adds to inward arrows as shown above. The arrows indicate the light signals.

The Light Dependent Resistor  is just another special type of Resistor and hence has no polarity. Meaning they can be connected in any direction. They are breadboard friendly and can be easily used on a perf board also. The symbol for LDR is just as similar to Resistor but adds to inward arrows as shown above. The arrows indicate the light signals.

A photoresistor or LDR (Light Dependent Resistor), as the name suggests will change its resistance based on the light around it. That is when the resistor is placed in a dark room it will have a resistance of few Mega ohms and as we gradually impose light over the sensor its resistance will start to decrease from Mega Ohms to few Ohms.

This property helps the LDR to be used as a Light Sensor. It can detect the amount of light falling on it and thus can predict days and nights. So if you are looking for a sensor to sense light or to distinguish between days and nights then this sensor is the cheap and modest solution for you( you can buy it at solicstores.in)

Two Cadmium Sulphide (CDs) PhotoConductive Cells with spectral responses similar to that of the human eye. Cell resistance falls with increasing light intensity.  An application includes smoke detection, Automatic lighting control, batch counting, and burglar alarm systems.

Features

• It can be used to sense Light.
• Easy to use on Breadboard or Perf Board
• Easy to use with Microcontrollers or even with normal Digital/Analog IC
• Small, cheap and easily available

 Applications:

• Automatic Street Light
• Detect Day or Night
• Automatic Head Light Dimmer
• Position sensor
• Used along with LED as an obstacle detector
• Automatic bedroom Lights
• Automatic Rearview mirror

Package Includes :