Joule Thief thread

Discussion in 'General Electronics Chat' started by takao21203, Jul 3, 2015.

  1. takao21203

    Thread Starter Distinguished Member

    Apr 28, 2012
    3,578
    463
    Here the latest Joule Thief, using a small 1:1 ferrite transformer.

    Exactly original schematic but using a BC327-25 PNP.
    LED is accross the transistor.
     
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  2. DickCappels

    Moderator

    Aug 21, 2008
    2,892
    708
    Nice! How much power does it draw?
     
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