Joule Thief thread

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

  1. takao21203

    Thread Starter AAC Fanatic!

    Apr 28, 2012
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    473
    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
    3,216
    805
    Nice! How much power does it draw?
     
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