LDR Stands for Light Dependent Resistor and its Resistivity varies with Incident Electromagnetic Radiations so, its resistivity is a function of Incident Electromagnetic Radiations or light. Other names of LDR are photoresistor, Photoconductor, Photocell, and photo conducting cell LDR is made of Semiconductor materials with high Resistance like Silicon or Germanium. It is a light-sensitive device, so this resistor has a different resistance value in day and night as given below Daylight: 5000Ω Dark: 20000000Ω FEATURES It requires less power to operate Quick Response Easy to use Generate high current APPLICATION Camera Exposure Control Auto Slide Focus Photocopy Machines Colorimetric Test Equipment Densitometer Electronic Scales Automatic Gain Control Automated Rear View Mirror Automatic Headlight Dimmer Night Light Control Oil Burner Flame Out Street Light Control Absence / Presence (beam breaker) Position Sensor
