Computing LED current limiting resistor values.
#1
Senior Member
Posts like a Corvette
Thread Starter
Join Date: Nov 2006
Location: Alberta, Canada
Posts: 1,446
Likes: 0
Received 0 Likes
on
0 Posts
Computing LED current limiting resistor values.
I was snooping around today and happened to run across this site. It may be very helpful for anyone wanting to work on some LED related projects. This site will compute the current limiting resistor required. All you need to do is provide your source voltage (the operating voltage of your vehicle, ~14V), the typical forward current and forward voltage of the LED. The latter two values are specific to each individual LED, dependant on their manufacturing specs. 1.9 - 2.1VDC are common along with a 20mA forward current (although there is a wide variance so use values specific to your product).
There is also link on the page if you plan to build a multiple LED array. This will be most helpful if you are connecting two or more LED'* is series.
Remember, LED'* are polarity sensitive and won't illuminate if connected backwards.
http://led.linear1.org/1led.wiz
Hope this link proves helpful.
There is also link on the page if you plan to build a multiple LED array. This will be most helpful if you are connecting two or more LED'* is series.
Remember, LED'* are polarity sensitive and won't illuminate if connected backwards.
http://led.linear1.org/1led.wiz
Hope this link proves helpful.
Thread
Thread Starter
Forum
Replies
Last Post
01BonneSC
Performance, Brainstorming & Tuning
10
07-18-2007 01:34 PM