photodiode

[foh-toh-dahy-ohd]

pho·to·di·ode

[foh-toh-dahy-ohd]
noun Electronics.
a photosensitive semiconductor diode.

Origin:
1940–45; photo- + diode
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Photodiode is always a great word to know.
So is capacitive time constant. Does it mean:
voltage that reverses direction in regular cycles
time taken for charge to decay to 1 over the natural logarithm of its initial value
Collins
World English Dictionary
photodiode (ˌfəʊtəʊˈdaɪəʊd)
 
n
a semiconductor diode, the conductivity of which is controlled by incident illumination

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
photodiode   (fō'tō-dī'ōd')  Pronunciation Key 
A diode that exhibits sensitivity to light, either by varying its electrical resistance like a photoresistor, or generating a electric potential in the manner of a photoelectric cell. See more at photoelectric.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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