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The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting (1894)

Martin, Thomas C, Tesla, Nikola · The Electrical Engineer · leaf 109

An illustration from The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting, 1894, leaf 109 — escribed . Fig . 72 is a side elevation of such motor . Fig . 73 is a side elevation of a more practicable and efficient embodiment of the invention . Fig . 74 is a central vertical section of the same in the plane of the axis of rotation . Referring to Fig . 72 , let x represent a large iron core… … Figs . 72 and 73 . the magnetic conditions existing in this core at any point , as b , at or near the centre , and any other point , as a , nearer the sur face . When a current impulse is started in the magnetizing coil y , the section or part at a , being close to the coil , is immediately…

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