Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 342
A and B, Fig. 238, represent the two electromotiv^eforces of a two-phase alternator, and let B^ be any given electro-motive force which it is desired to produce. The component of£j parallel to A is £^ sin /3, and the component of £^ par-allel to B is E^ cos /3; and /<? produce the desired… … Fig. 238. these secondary coils in series. Thus Fig. 239 shows two separatetransformers with their primary coils connected to phase A andphase B, respectively, of a two-phase alternator, the secondarycoil a has a number of turns sufficient to produce the electro-motive force E^ sin yS, the…
Dynamos · Electric motors
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