Main > Main Forum
Resistors & LEDS & Buttons oh My!
Brad Lee:
Found it-
http://www.ultimarc.com/ipac2.html
at the bottom of this page is the diagram for leds to an Ipac, so thats where i kept finding the 220 resistors
I will check my switches when I get home for the draw needed and use one of those calcs to figure out theright one
Thanks
ErikRuud:
Note that the Ultimarc diagram actually shows 220 Ohm resistors, not 220K ohm resistors.
Carsten Carlos:
The resistors depends on the color and brightness of the LED you wanna use.
Check my homepage under "LED's how to", there is a table of the most common colors and which resistor they need at 5V.
seaner:
--- Quote from: Carsten Carlos on March 12, 2003, 05:39:34 pm ---The resistors depends on the color and brightness of the LED you wanna use.
--- End quote ---
That's a bit of a broad statement which may hold true for one family of LEDs. Some LEDs require much more current than others, regardless of the color.
Brad Lee:
--- Quote from: ErikRuud on March 12, 2003, 03:33:29 pm ---Note that the Ultimarc diagram actually shows 220 Ohm resistors, not 220K ohm resistors.
--- End quote ---
Yeah that was my bad, just took a quick look at it and typed it later..
Well according to the calculator it should be either a 300 or 330ohm
The switches are straight off of a Midway panel and are labeled like this:
+=2V MAX
10A 125/250VAC