« previous next »
Pages: [1]

Author Topic: Dead LED  (Read 749 times)

Offline deplanche

  • Sr. Member
  • ****
  • Posts: 347
Dead LED
« on: June 17, 2011, »
I've starting checking parts before I assemble to make sure I have the right ones.  Checked the LED for the Hub with a watch battery, and sure enough 1 of the 2 LEDs for the 2 hubs I am building wasn't working.  And yes, I made sure the orientation was correct... that's easy to do before they are installed.

I have a few spare LEDs around from other projects, but I don't know enough about them to know if it is going to have enough power to light the LED or too much and overload it when attached to the hub.  Is there anyway to tell when they are just laying around and not in any packing to know their specs?

If not, what are the critical things I need to know to get one from the Shack?
Logged

Offline chrisatpsu

  • Sr. Member
  • ****
  • Posts: 3729
  • ahhh, yes... my new blink-i-nator 3000!!!
Re: Dead LED
« Reply #1 on: June 17, 2011, »
i'm sure you can probably find out in some way, using a multi tester, but i don't know the specifics.
Logged
To rule the entire tri-state area!  What's that? Perry the Platypus!!!

Offline wftxlites

  • Sr. Member
  • ****
  • Posts: 158
Re: Dead LED
« Reply #2 on: June 17, 2011, »
Standard LED's are 20mA the amount of current (mA) is determined by the voltage and resistor value. You should be good to go as both are already determined on board by design.

Greg
Logged
Pages: [1]
« previous next »