Battery Junction
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Thread: Which Sandwich to get

  1. #1

    Default Which Sandwich to get

    Hello,

    I want to modify my cheap Wal-Mart Coleman 3AAA light by replacing the 1W LED with a 3W LED (forward voltage 3.8v @ 700mA) I have laying around. Which board would work the best for my needs?

    Thank you for your time,

    Matt
    Last edited by MrMatt; 04-12-2012 at 09:39 PM.

  2. #2

    Default Re: Which Sandwich to get

    If the LED Vf is a typical white LED with Vf of ~3V-3.5V you will need a stepdown (SOB) or a buck boost like the GD converter board.

    Wayne
    Quote Originally Posted by MrMatt View Post
    Hello,

    I want to modify my cheap Wal-Mart Coleman 3AAA light by replacing the 1W LED with a 3W LED (forward voltage 3.8v @ 700mA) I have laying around. Which board would work the best for my needs?

    Thank you for your time,

    Matt

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