sherdeo Posted January 29, 2004 Report Share Posted January 29, 2004 I just wanna know what the part number is for Diodes used in the schematic below......they are IR diodes. Any help would be apreciated. Thanks. Quote Link to comment Share on other sites More sharing options...
mozikluv Posted January 31, 2004 Report Share Posted January 31, 2004 :)hi,most infrared LEDs have a high current rating of 100ma. however the supply voltage is not posted, even if the Vcc is 12v it would supply 0.12ma.better do a google search for "infrared LEDs" to find the appropiate led. ;) Quote Link to comment Share on other sites More sharing options...
mixos Posted January 31, 2004 Report Share Posted January 31, 2004 What you need is two "infrared LEDs" as mozikluv noticed... they look like a common led diode in clear plastic or violet color (see attachment) but they emmite light you can't see with eyes because it's infrared... Is this helping you? Did you finally understund it? Quote Link to comment Share on other sites More sharing options...
MP Posted January 31, 2004 Report Share Posted January 31, 2004 The schematic would imply that the center diode is the transmit LED, which has a good current rating with the resistor used at low volt. (Most IR projects use 3V.)The schemtic would also imply that the other two devices are 'receive' since the schematic symbol is pointing the arrows toward the LED symbol. This makes sense at it would complete the circuit and trigger the transistors. In this case, mozikluvs calculation would not be correct. This is the receive part of the circuit, not the transmit. You would want a small current here. This device is switching connection to ground on or off, depending upon if it sees IR.MP Quote Link to comment Share on other sites More sharing options...
Staigen Posted January 31, 2004 Report Share Posted January 31, 2004 Also only the middle diode is a infrared led, the outer two is IR reciver devices! Maybee a IR led can be used for reciving too?//Staigen Quote Link to comment Share on other sites More sharing options...
Staigen Posted January 31, 2004 Report Share Posted January 31, 2004 Hehe, me and MP was replying at the same time! And its both transmitter and receiver at the same time (tranceiver). The right and left output implies that it is some sort of direction circuit also.//Staigen Quote Link to comment Share on other sites More sharing options...
Ilias Posted January 31, 2004 Report Share Posted January 31, 2004 hey there's a similar design but with two emitters and one receiver in the middle at lynxmotion site let me find it ....there it is http://www.lynxmotion.com/Category.aspx?CategoryID=8if you can't find it just look at the productsthere is a uk distibutor also for distribution other than usa Quote Link to comment Share on other sites More sharing options...
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