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Electronics: Joule Thief

Discussion in 'Design and technology' started by misspixie9, Jan 30, 2012.

  1. Hi

    I'm meant to be planning a project on sustainability, and struggling to come up with ideas... I've looked at solar powered items, and using a motor as a generator and either making a wind up torch or wind powered something, and then someone pointed me towards the Joule Thief concept. (http://www.instructables.com/id/Making-A-Simple-Joule-Thief-made-easy/step2/Schematic-Diagrams/)

    Has anyone tried this with students? What age range? I'm looking at year 8/9 for it, so if anyone's done it with mixed ability KS3 that would be even better!

    Thanks x
  2. bigpedro

    bigpedro New commenter

    How about trying a "shake" torch?

    Now I haven't tried this personally but it should be possible....
    Coil of wire round the torch body, rare earth magnet can move inside coil (when shaken)
    Supercapacitor charges up
    powers light for a short time
    shake for more light/time
    get thinking people :)
  3. Interesting idea, it's definitely worth a go! I think I've got a bought one somewhere, maybe I can "borrow" the circuit from it to play with.... :D

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