Connect with us

unknown LED specs

Discussion in 'LEDs and Optoelectronics' started by stormin norman, Nov 11, 2013.

Scroll to continue with content
  1. stormin norman

    stormin norman

    41
    0
    Dec 1, 2011
    I have a collection of various LED units I have no specs on. What is a 'safe/typical' resistor to use with them? Power supply could be anywhere from 3 to 9v...
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,384
    2,771
    Jan 21, 2010
    6V and a 470 ohm resistor.

    The 6V means your LEDs are safe from reverse breakdown.

    the 470 ohm resistor limits the current to something that is likely safe for any LED.
     
  3. Fish4Fun

    Fish4Fun So long, and Thanks for all the Fish!

    462
    105
    Aug 27, 2013
    I keep a 1.5V AA wired with a 1k resistor handy for 100% sure-fire safe polarity testing. Even on a 3.6Vf/3W LED bead there is a faint glow good enough for indicating go/no-go testing.

    Fish
     
  4. jarvisedwin

    jarvisedwin

    1
    0
    Nov 11, 2013
    6V and a 470 ohm resistor.
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,384
    2,771
    Jan 21, 2010
    How to get the attention of the moderators as a potential spammer.
     
  6. stormin norman

    stormin norman

    41
    0
    Dec 1, 2011
    Thanks everyone for the gracious help here...appreciate it. Always know I can get help here from the brain pool....
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-