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  • TGIK commented on ASCAS's instructable Water Powered Flashlight8 months ago
    Water Powered Flashlight

    If you don't want to go through the work of constructing a joule theif circuit, a 5252f is a IC they use in solar lights that use a small 4 pin package and a inductor to do the same thing, you can get them fairly cheap on ebay.

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