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I hate to be a bother but I am working on a simple ir led driver for a 10ma ir led emitter but I will admit I suck at calculating resisters for base I have a 5v source with a 360ohm resister on the collector and a 3.3v base the emitter is straight to ground what size resistor if any should I use on the base? incase it matters the base is a RPi GPIO
here is the diagram I am using if there is a better method any suggestions will be great
http://1.bp.blogspot.com/-DuyRAT_xH5Y/UQrkCocR6bI/AAAAAAAAA7A/Nqgq_O1N4Ys/s320/IRtransmit.png
Thanks,
yonu
This thread was split from here: http://forum.allaboutcircuits.com/showthread.php?t=93490
Your post has been moved into its own thread, where it will draw more responses.
Please refrain from "hijacking" existing threads with tangent or off-topic questions. You can create new threads for new questions using the "New Thread" button on the upper left of the page.
I hate to be a bother but I am working on a simple ir led driver for a 10ma ir led emitter but I will admit I suck at calculating resisters for base I have a 5v source with a 360ohm resister on the collector and a 3.3v base the emitter is straight to ground what size resistor if any should I use on the base? incase it matters the base is a RPi GPIO
here is the diagram I am using if there is a better method any suggestions will be great
http://1.bp.blogspot.com/-DuyRAT_xH5Y/UQrkCocR6bI/AAAAAAAAA7A/Nqgq_O1N4Ys/s320/IRtransmit.png
Thanks,
yonu
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