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photodetector
(redirected from Photo cell)

    Also found in: Wikipedia 0.01 sec.
photodetector
A device that senses light. It uses the principle of photoconductivity, which is exhibited in certain materials that change their electrical conductivity when exposed to light. See photoelectric, photocell and photodiode.
photodetector [¦fōd·ō·di′tek·tər]
(electronics)
A detector that responds to radiant energy; examples include photoconductive cells, photodiodes, photoresistors, photoswitches, phototransistors, phototubes, and photovoltaic cells. Also known as light-sensitive cell; light-sensitive detector; light sensor photodevice; photodevice; photoelectric detector; photosensor.
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To make this really work, a photo cell was placed at the rear of the disk as it rotated.
How Does a TV Work How Man Ended up with a Decent TV Set by John Grant / Computers and Internet community
The door is equipped with an electrically monitored contact safety edge and integrates a door line stationary photo cell, which automatically stops the door if it senses an obstruction and returns it to its open position.
Behind the clean room door by Food Trade Review
Jankowski suggested at a meeting earlier this week that the possibility of removing photo cells from street lights in the town, a process also known as "red capping.
LOCAL MEETING ROUNDUP by Telegram & Gazette (Worcester, MA)
 
 
 
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