All videos for the tag led (5 videos)
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Joule thief with 120 VAC LED bulb – part 3
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Ladron de Joules Ajustable (Diagrama y construccion)–Adjustable Joule Thief ( construction)
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Incroyables expériences [45] Fabriquer un Joule thief / Make a joule thief
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How a Joule Thief Works
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Joule thief 2 : Incroyables Expériences [62] Faire un joule thief 2 / Make a joule thief 2 / DIY