Revision history of "Joule Thief"

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  • (cur | prev) 18:32, 9 July 2016Cataspanglish (Talk | contribs). . (203 bytes) (+203). . (Created page with "Build a magic circuit that lights up an LED for hours from an empty battery! Learn to solder, design and build protoboard-PCBs, wind a small coil, and have fun! Approximate c...")