New LEDs from much lower voltage !

Discussion in 'General Electronics Chat' started by Externet, Sep 10, 2014.

  1. Externet

    Thread Starter AAC Fanatic!

    Nov 29, 2005
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  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    The "leds" will have some electronics in the base to work on the large voltage range.
    This could be a buck/boost circuit.

    Bertus
     
  3. #12

    Expert

    Nov 30, 2010
    16,343
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    I have a Joule Thief flashlight (white LED) in my pocket that will run from a single AA battery. It must have .6 volts to start but it will suck the battery down to 0.1 volt if you accidentally leave it on.
    These bulbs that you pointed out will make these flashlights cheaper and smaller because the Mfg. will not need to dedicate half an inch to building the oscillator circuit into the flashlight.
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Yes, Bertus is correct. Big Clive posted how to make these on his website years ago:
    http://www.bigclive.com/joule.htm

    There's a bunch of interesting/fun stuff on his site.
     
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