1 20min 20ma 20ma result

Resistor Help Needed

Electronics Forum | Thu May 13 19:41:17 EDT 2004 | johnww

Hi Everyone, I want to use LEDs in an enclosed box for edge lighting etched glass. There are 15 LEDs in a box and they are set up in 5 series of 3 LEDs. The LEDs are 3.5V 20Ma 8000mcd. I've worked out that I need an 82 ohm resistor for each series