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Photoresistor - Wikipedia


A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor ... Large CdS Photocell from a street light. ... They are also used in some dynamic compressors together wi...



Photocells are used in automatic night lights and in street lamps that turn themselves on at night. Sometimes known as photoresistors, photocells are available ...

Uses of Photocells | Sciencing - eHow


Photocells are semiconductors that are light detectors. They are essentially light dependent resistors, because they have an output that is proportional to the ...

What Is a Photocell for a Light? - Techwalla.com


Mar 31, 2015 ... Photocells react to ambient light via a changing electrical resistance. ... Photocells ... Photocells are commonly used in dusk-to-dawn lights.

How do photoelectric cells work? - Explain that Stuff


Nov 29, 2016 ... ... it's used in photovoltaic, photoconductive, and photoemissive cells. ... called photocells)—electronic devices that generate electricity when ...

How does a photocell work? | Reference.com


The semiconductor that is used in a photocell is usually of a very high resistance. This allows the photocell to stop the flow of current completely when there is no ...

Photocell-Application of photoelectric effect - City Collegiate


A photocell is a practical application of the phenomenon of photoelectric cell. ... A photocell can be used in any situation where beam of light falling on it is ...

Photocell tutorial! - Instructables


Photocells a.k.a CdS cells, photoresistors, LDR (light dependent resistor). ... For this reason, they shouldn't be used to try to determine precise light levels in lux ...

Photocell | Define Photocell at Dictionary.com


Photocell definition, a solid-state device that converts light into electrical ... or uses light to regulate the flow of current, as in a photoconductive cell: used in ...

BBC - GCSE Bitesize: Photocells


Photocells are devices that transfer light energy directly into electrical energy. ... Very large panels of photocells are used to power satellites in orbit around Earth  ...