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Toroide de alto rendimento p 2

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Transformadores Toroidais: Como são Enrolados?

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Watchmaking: Machining a Watch Gear

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Every Component of a Switch Mode Power Supply Explained

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Professor Eric Laithwaite: Motors Big and Small - 1971

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The MOST Broken Computer? The 1986 Sinclair Spectrum+2

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Toroides passe 6 fios diminua 1/6 de voltas

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The BEOCORD problem