Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 607
URRENT MACHINE. Fig. 381 represents tlie Niaudet machine. It lias a polararmature,—the rotating coils being wound upon radial bars ofiron, as upon the arms of electro-magnets—and a Gramme col-lector. The armature consists of twelve helices, wound with in-sulated copper wire, and attached by screws… … Fig. 381. being consequently S and IST respectively. If the two upj^erpoles were both N, and the lower both S, the induction in eachhalf of every core would neutralize the other half, and no cur-rent could be obtained, while by arranging them in this mannerthe inductive effect of each horseshoe…
Electrical engineering
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