Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 71
be about midway be-tween two pole pieces. If the brushes are moved aquarter revolution forward or back the directions ofcurrent will be reversed. Armatures for such ma-chines may be wound just as for bi-polar fields but aform of winding as indicated in Figure 50 is prefer-able. Types of Dynamos 67… … Figure 49 in two and the wires laid out flat. W, W representsthe commutator sections and N, S, the poles as inFigure 49.
Electrical engineering · Electric testing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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