Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 530
ion of the Weston system under thevariety of circumstances which are necessarily met with, it hasbeen found necessary to invent and apply a number of supple-mentary or accessory devices, such as automatic regulators, THE WESTON AKC LAMP. 509 circuit-indicators for calling attention to accidental… … Fig. 31L for the arc system, which is illustrated in figure 311. Upon theupright portion of the frame or base-board is a sectional com-mutator or sunflower, over which sweeps a metallic arm carryinga set of contact-springs. This commutator is included in the 510 THE ELECTRIC LIGHT. circuit of the…
Electrical engineering
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