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 499
t. The armatures were oripnally so ar-raiiired as to be plaeed in any ]iosition relatively to each other,and the fields also were arranged to be connect<?d in a number(»f ways. The mot«)r has served for the exhibition of a numl»erof features; among other thin<rs, it has been used as a… … ^ Fir.. 2its ]>r(>(lucc<l a rofarion <>f tlie llehl : the aniiatui-c was then rotatedin the same or in opposite direction to the movcMnent of the field;and so any number of alternati(»ns of the currents induced influxarmature, from a small t<> a hiirh nnmbcr. determined by…
Electric currents, Alternating · Electrical engineering
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