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Thread ID: 62554	2005-10-11 17:56:00	Anyone no a good Technology site...?	Naruto28 (7236)	PC World Chat

Post ID	Timestamp	Content	User
395304	2005-10-11 17:56:00	Yo, I got this project to do for Technology and I need to find a good site for Dark Sensors and its components etc . I've searched everywhere but cannot find a single site that takes it time and explains dark sensors to me . Can anyone please hlp me find a GOOD site . :annoyed: Thnx	Naruto28 (7236)
395305	2005-10-11 18:38:00	Dark sensors are actually LDRs (Light Dependent Resistors). If you have a search for that, you should come up with a lot of site.	somebody (208)
395306	2005-10-11 20:11:00	www.google.com	Rob99 (151)
395307	2005-10-11 20:50:00	Just to make things a little clearer Naruto, there is no such thing as a "dark sensor." There are devices that sense light (detect photons) and when such a device no longer senses the present of light, their output will change. In the case of an LDR, its resistance drops in the prsence of light, so its "dark state" is a very high resistance. Photo-transistors work in a similar fashion, with light biasing the transistor further into conduction, and darkness reducing conduction. This Site (circuits.cf.ac.uk) may help you with details, or Google phototransistor OR photoresistor +theory. This will bring you a more focussed result that the previous link that was posted. Everything you need is in the first 20 hits. Cheers Billy 8-{)	Billy T (70)
395308	2005-10-12 15:14:00	Thnx Rob and Billy and Somebody (LOL) :D I was really confused and all of use hav now made life a better place for me. ;) Thnx! :D :D :D PS. Plz, Moderators. Dont delete this thread becoz i might still need it if I lost the sites or 4 any reason. ^_^	Naruto28 (7236)
395309	2005-10-12 18:49:00	Posts are never deleted - in fact, there are some posts on this forum from as early as 2001.	somebody (208)
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