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6321 Views 5 Replies Latest reply: Mar 21, 2014 3:34 AM by OSOO RSS
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Mar 17, 2014 6:15 PM

ir led and phototransistor

https://scontent-a-lhr.xx.fbcdn.net/hphotos-frc3/t1.0-9/1509880_728669633821659_1523924368_n.jpg

I made this circuit to sense the fluids drops that falls through the silicon tube of an iv infusion pump ,but I don't know what are the suitable photodiode and transistor to use ,please can you help me to get the proper componenets that matches ,

for example some phototransistors are not sensitive to some bandwidths of infrared light ,and many other problems that i don't want to encounter because i have no time to waste ,i have to complete my senior design as soon as possible.


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