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For the term "experimental homemade transistor from carbon sand".

4 carbon fiber alufoil cells in series running LED

http://www.overunity.com/13282/carbonfiber-alufoil-selfmade-diy-battery-with-naco3-or-ashwater-electrolyte Hi, this is a test with 4 carbon fiber alufoil cells in series running the LED chip. Unfortunately the inner resistance of these cells is tsill too high, so the light output in…