[Techtalk] matching LEDs to resistors

[Mike Kenzie]

----- Original Message -----
From: Carla Schroder <carla at bratgrrl.com>
Date: Sunday, December 4, 2011 7:19 pm
Subject: [Techtalk] matching LEDs to resistors

> OK electronics gurus-- how do I know which resistors go with LEDs? 
> Other than 
> asking the vendor. Like this one 
> http://search.digikey.com/us/en/products/WP7113SRD%2FE/754-1276-
> ND/1747675

 

this link will help

http://led.linear1.org/1led.wiz

the forward voltage is 1.85 and the current is 20 the other value you
need to answer your question is how much voltage you are supplying