Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 693
coils, and the black ones those of the first. This arrange-ment, however, was found objectionable in practice, as the coilsof the second set were not only longer than those of the first,,but were nearer to the poles of the field magnet, and movedfaster on account of being further from the shaft.… … Fig. 450. side by side, as shown in the diagram, fig. 450. In this methodof winding, each coil occupies the same relative position withreference to the armature core and the field; and a perfect elec-trical balance is obtained, by reason of which the spark at thecommutator is reduced to a minimum.…
Electrical engineering
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