Connect with us


Discussion in 'LEDs and Optoelectronics' started by robin9000, Jan 22, 2011.

Scroll to continue with content
  1. robin9000


    Oct 29, 2010
    My project am trying to do is to wire up a bunch of leds and connect them to my computers power supply.

    Each led has a rating of .020 to .030 ohms and a forward voltage of 3.0 to 3.3 volts.

    Given that what I would like to know is if I wire 4 of them togeather one after the other making a total of 12 volts and then put the positive connection on the positive side and negitive on the negeitive side would this work or do I still need a resitor with a very small value to regulate the voltage.

    Also to expand this can I tie say 10 or 12 groups like this togeather the other way to give more light to my project.

    Last edited: Jan 23, 2011
  2. Resqueline


    Jul 31, 2009
    You mean Amperes, not Ohms.

    If you want an undefined current and a brightness that changes with the CPU load then surely you can get away with 4 LED's in series on 12V using no (or very small) resistors.

    You mean in parallell. Yes, certainly.
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
  4. robin9000


    Oct 29, 2010
    Thanks for the information, that is so great.
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