Web Results

Photoresistor - Wikipedia


A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor ... They are also used in some dynamic compressors together with a small ... Jump up ^ "Silonex: TO-18...



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

How do photoelectric cells work? - Explain that Stuff


Jan 27, 2016 ... Photo: The mini solar panel on this pocket calculator uses a type of .... detects how much light is reflected back with a photocell, and then sifts ...

Photocell | Define Photocell at Dictionary.com


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

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 ...

Using a Photocell | Photocells | Adafruit Learning System


Jul 29, 2012 ... The way this works is that as the resistance of the photocell .... the range analogWrite uses; LEDbrightness = map(photocellReading, 0, 1023, 0, ...

BBC - GCSE Bitesize: Photocells


Photocells are devices that transfer light energy directly into electrical energy. ... The Hubble Space Telescope uses photocells to generate the electricity it needs  ...

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 ...

Photocells and their Application | Tutorvista.com


Photoemissive cell. A photocell converts the change in the intensity of light into a change in the electric current. The diagram shows a photocell circuit.

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


Photocells are commonly used in dusk-to-dawn lights. These lights turn on when the surrounding environment is dark and turn off when it becomes bright again.

More Info

Uses of Photocells | eHow


Uses of Photocells. Photocells are semiconductors that are light detectors. They are essentially light dependent resistors, because they have an output that is ...

Application of Photocells on LED Light Fixtures - Jarvis Lights


Dec 3, 2014 ... Application of Photocells. All of our LED products have the ability to work with a photocell/dusk-to-dawn sensor. This accessory can be installed ...

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 ...