Photoresistors

What does is do:A Photoresistor is a variable resistor that let current flow easy when it is exposed to light. It's most used as a sensor to detect changes in brightness. Streetlights often use a photoresistor to detect when it should turn on.Other names:PhotocellsCdS CellsLight Dependent Resistors ...

By: OlaC



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from Instructables: exploring - technology http://ift.tt/1yfqKzk