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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 ...

Photocell | Define Photocell at Dictionary.com

www.dictionary.com/browse/photocell

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.

Sensing Light Levels with a Photocell | Digi XBee® Examples ...

examples.digi.com/sensors/sensing-light-levels-with-a-photocell/

Photocells are a popular component in electronics projects; they let you sense and take action based on the amount of light hitting the cell. Not only are they ...

Photocell tutorial! - 3 - Instructables

www.instructables.com/id/Photocell-tutorial/step3/Project-examples/

Line-following robot that uses photocells to detect the light bouncing off of ... to break a photocell by supllying it too much light (for example using a phone's led? ).

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 ...

Photocell tutorial! - Instructables

www.instructables.com/id/Photocell-tutorial/

Photocells a.k.a CdS cells, photoresistors, LDR (light dependent resistor). ... to break a photocell by supllying it too much light (for example using a phone's led? ).

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 ...

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How do photoelectric cells work? - Explain that Stuff

www.explainthatstuff.com

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

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.

BBC - GCSE Bitesize: Photocells

www.bbc.co.uk

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 ...