Main > Main Forum

finding led for trackball...

(1/1)

bossyman15:
i want to connect trackball light to ledwiz but my lamp is 14v so i need 5v or less. know of any led?

hanelyp:
You want to run a 14V lamp controled by a device designed to feed 5V to a LED?  Or replace the lamp with a LED?  For the former, there are relays that operate on 5V to switch higher voltages.

bossyman15:
replace lamp with led.

hanelyp:
From an electrical standpoint, just put the right resistor in series with the LED for the voltage.  14V supply, 20mA current through the LED, E=IR : R=E/I -> 700ohms should work (shortcuts taken).

Navigation

[0] Message Index

Go to full version