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Electronics => Electronics => Topic started by: MaltiK on November 12, 2008, 06:54:06 PM

Title: Infared Emitter and Phototransistor Detector and Photoresistor Help?
Post by: MaltiK on November 12, 2008, 06:54:06 PM

In the IR sensor tutorial on this website, it seems like the IR emitter, detector diodes he used was at Rshack,

http://www.radioshack.com/product/index.jsp?productId=2049723

am i wrong?

Can anyone show me a link of these two products on Mouser? I am definitely not willing to spend 3.50 on this and I looked awfully hard, also does anyone have a mouser link to these:

http://www.radioshack.com/product/index.jsp?productId=2062590

CdS photoresistors?


I searched both and I didnt think photoresistors and phototransisotrs (what mouyser has) were the same

Title: Re: Infared Emitter and Phototransistor Detector and Photoresistor Help?
Post by: HDL_CinC_Dragon on November 14, 2008, 09:59:52 PM

Photoresistors will change their resistance based on the level of light that hits their cadmium sulfide(CdS) traces.
Phototransistors work differently. I cant really explain it in my owns words as I myself dont know exactly how they work, I just know theyre very different. To help out, skim through this page: http://en.wikipedia.org/wiki/Phototransistor#Other_modes_of_operation its under "Other modes of operation"

Hope this helps

-Dragon


Note: Please allow for much more than an hour and a half to get an answer. Wait at LEAST 12 hours before "bumping". Though bumping is semi frowned upon in help forums if im not mistaken... unless of course like 2 or 3 days goes by without an answer :-p

Title: Re: Infared Emitter and Phototransistor Detector and Photoresistor Help?
Post by: MaltiK on November 15, 2008, 06:18:53 AM

You didnt answer my question, I know how they work, I just need a Mouser link. :/

Title: Re: Infared Emitter and Phototransistor Detector and Photoresistor Help?
Post by: HDL_CinC_Dragon on November 15, 2008, 11:35:01 AM

Quote from: MaltiK on November 15, 2008, 06:18:53 AM

You didnt answer my question, I know how they work, I just need a Mouser link. :/

ah crap sorry. I read your last sentence and mis-interpreted it. Sorry >_<

Title: Re: Infared Emitter and Phototransistor Detector and Photoresistor Help?
Post by: Admin on November 24, 2008, 04:31:41 AM

I'm confused whether you want photoresistors or IR emitter/detector pairs . . .

tons of IR:
http://www.mouser.com/Search/Refine.aspx?N=254227&Keyword=infrared&FS=True

you can find the photoresistors on digikey


ps - I deleted your bump (the appropriate bump is about 2 days wait or so)