Connect with us

trying to wiring LED's

Discussion in 'LEDs and Optoelectronics' started by joe468, Mar 27, 2010.

  1. joe468

    joe468

    1
    0
    Mar 27, 2010
    Hi I have a set of 3 LED's that are acually manufactured as LED car dash lights(package only says they are BRIGHT BLUE) that are wired through a little circuit board in series and has what looks like some sort of resistor and is powered by a cigarette lighter adaptor. I want to cut off the cigarette lighter adaptor and use AA's not sure how many i need,if i need to cut them off the circuit board ,and if i need resistors.If so how I would wire everything up.I had a person at an electrical store that sells LED's tell me I dont need resistors,I had someone tell me I need 120 to 150 resistors connected to each LED.Thought I would try to get an opinion from a forum.Thanks .Attached is a pic of what i am working with
     

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,191
    2,693
    Jan 21, 2010
    If it's designed to run from 12 volts, then 8 1.5 volt batteries in series would be appropriate.

    If you want to run each LED separately, then at 4.5V (three AA cells in series) a 120 ohm resistor for each LED would probably be appropriate.
     
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

-