Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 705
. insulated terminals we place a commutator on the shaft of thecvliuder, we shall perceive currents always in the same direc-tion, and which will produce the eflect of continuous currents. In place of a single coil of wires, several thicknesses of wiremay be superposed, and instead of a pair of… … Fig. 453. of an opposite sign, as shown in figs. 453 and 451 A, drivingpulley; D, copper ring, connecting circles of magnets, Pn, Ps.Collectively these series of magnets form two concentric cylindersbetween one end of which the soft iron ring covered with its coilsrevolves. The electro motive force…
Electrical engineering
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