Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 65
the loops so formed are connected in the same manner, andto a commutator of the same construction, as that of the Gramme.As the armature rotates, the cores pass between the opposedworth and south poles of the field magnets, and the current gene-rated depends on the change of polarity of the cores.… … Fig. 23. Fig. 24. made, that the currents generated in the two series of armaturecoils pass through the field magnet coils, and are joined in oneexternal circuit. This form of armature also presents consider-able uncovered surface of iron to the coohng effect of the air,but its external form, in…
Electrical engineering
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