Web Results

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  ...

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 ...

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.

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 ...

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 ...

Photosensitive devices, Photosensitive devices, LEDs, sample circuits

www.sentex.ca/~mec1995/tutorial/photocell/photocell.html

Oct 14, 2010 ... Light-sensitive devices include photocells, photodiodes, and ... Some photocells are hermetically sealed to withstand the effects of demanding ...

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? ).

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 ...

What is a photocell sensor? | Reference.com

www.reference.com/home-garden/photocell-sensor-771781909d9cce27

Photocell sensors are light-detecting devices that act as automatic switches to power electrically ... What are some tips for installing Guardian garage doors?

More Info

Types of Photocells - Scribd

www.scribd.com

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 ...

Photocells | Define Photocells at Dictionary.com

www.dictionary.com

Photocells 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.

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.