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Photoresistor

en.wikipedia.org/wiki/Photoresistor

A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor ... If a sample of silicon has some of its atoms replaced by phosphorus atoms (impurities), there will be e...

Photocells

www.me.umn.edu/courses/me2011/arduino/technotes/photocell/photocell.html

Inlike infrared sensors that are good for line followers or detecting the presense of an object, photocells are good when you just want to detect light. For example  ...

Types of Photocells - Scribd

www.scribd.com/doc/19251628/Types-of-Photocells

If a sample of silicon has some of its atoms replaced by phosphorus atoms ( impurities), there will be extra electrons available for conduction. This is an example ...

How do photoelectric cells work? - Explain that Stuff

www.explainthatstuff.com/how-photoelectric-cells-work.html

Jan 27, 2016 ... All these things are examples of photoelectric cells (sometimes called photocells) —electronic devices that generate electricity when light falls ...

BBC - GCSE Bitesize: Photocells

www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/energy_resources/energy_from_the_sunrev1.shtml

For example, they are used to power the lights for some road signs. The output of photocells depends on the surface area that is exposed to light. For a given ...

Using a Photocell | Photocells | Adafruit Learning System

learn.adafruit.com/photocells/using-a-photocell

Jul 29, 2012 ... For this example I'm showing it with a 5V supply but note that you can use this with a 3.3v supply just as easily. In this configuration the analog ...

Example Projects | Photocells | Adafruit Learning System

learn.adafruit.com/photocells/example-projects

Jul 29, 2012 ... Example Projects. by lady ada · Noisemaker ... Line-following robot that uses photocells to detect the light bouncing off of white/black stripes ...

Photocells and Light Detection with the Watchdog System - Edstrom ...

www.edstrom.com/file.aspx?DocumentId=74

understand some general principles of lighting. These general principles illustrate why photocells have to be setup and installed in a specific way. Direct Light ...

What is a Photocell? (with pictures)

www.wisegeek.org/what-is-a-photocell.htm

A photocell is a type of sensor that reacts to light or electromagnetic energy. One of ... Optical detectors, for example, act as advanced thermometers: they take in ...

Photocells - English Street Lights Online

www.streetlightonline.co.uk/Photocells/

The names on the left are the names of UK photocell companies, past and present, that I have examples of in my collection. Clicking on these links will take you ...

More Info

Photocell tutorial! - 3 - Instructables

www.instructables.com

Photocell tutorial! by adafruit ... Step 3: Project examples ... Line-following robot that uses photocells to detect the light bouncing off of white/black stripes

Types of Photocells | eHow

www.ehow.com

Photocells, otherwise known as photodetectors and photosensors, are a catch-all category for a ... Listed here are some examples of photocells, and their uses.

Photocell | Define Photocell at Dictionary.com

www.dictionary.com

Photocell definition, a solid-state device that converts light into electrical energy by producing a voltage, as in a ... Examples from the Web for photocell. Expand.