Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 393
t; Bare opposed to each otherand flow to the externalcircuit by the -f brush 1and back to this halfof the armature by —brushes 3 and 4. At thesame instant the opposedcurrents in the lowerwindings flow to the ex-terna] circuit by H brush 2 and return to the arma-ture through — brushes 3 and 4. The… … Fig. 359.—Direction of Current Through the Windings of a Ring Armature Rotating in a Four-Pole Field. the neutral space,ence of potential between the + brushes, so that they are con-nected in parallel, as are also the negative brushes, and thento the external circuit. In multipolar machines there…
Electricity · Magnetism
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