The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas Commerford, 1856-1924, Tesla, Nikola, 1856-1943 · New York : The Electrical Engineer · leaf 452
.I- In Iig. ■J4.» a sim|tle aiMangemeiit is >hown with twn plates of niica or other material. It will be seen that wlienexcr one com- ANTISPAHKING BRUSHES AND COMMUTATORS. 433 mutator segment passes out of contact with the brush, the forma-tion of the arc will be prevented by the intervening… … Fig. 244. Fig. 245. paper and cloth are soft, and serve at the same time to wipe andpolish the commutator; but mica or any other suitable materialcan be employed, provided the material be an insulator or a l)adconductor of electricity. A few yeais later Mr. Tesla turned his attention again to…
Electric currents, Alternating · Electrical engineering
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