Need some EE students help (or electricians, or tinkerers)

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  1. #1
    Great White Shark
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    Need some EE students help (or electricians, or tinkerers)

    I'm trying to figure out a way to create my own low power LED lighting system for a room. I apologize in advance for the amount of stupidity that will follow. I haven't used my electrical knowledge in a decade or so. And even back then it sucked, but I digress.

    I've already (in general) got the plan laid out. It's the final steps that I'm having trouble figuring out. I plan on using 100ea 3mm Bright White LED's. The specs on the LED's are 20mA, 15 lumens, 3.3v.

    Here's my plan:
    Code:
    +________+_______+_______+_______+_______+__
    PWR	LED	LED	LED	LED	LED
    -________-_______-_______-_______-_______-__
    Basically, using some of that "flat" speaker cable as the positive and negative leads, and simply soldering on the led's every few cm's or so.

    So that is parallel, correct? I found this page which seems to indicate that I am wiring them in "parallel", so I'm going to assume that is correct.

    Then I have a 3.3v circuit that will need 2A to drive it, or does the current add up differently?

    What is an efficient 3.3v source? Or would it be better to sting a few of these in series to bring it up to 12v?
    Last edited by James; 05-08-2008 at 04:21 PM.

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