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 485
tism or order of the poles in one field of force is oppositeto that in the other, so that rotati(»n of the discs in the same di-recti(»n develops a current in one from centre to circumferenceand in the other from cireumfei-ence to centre. Contacts appliedtherefore to the shafts u])on which the… … Fk;. 200. Fk;. 25)1. fields be the same, tlie .sime result as abovi- will be obtained bvdriving the discs in (>j)posite directions and crossing the connect-ing belts. In this way the difficulty of securing and maintaininggood conta(;t with the ))eripheries of the discs is avoided and acheap and…
Electric currents, Alternating · Electrical engineering
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