Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 360
Figs. 3,365 and 3,366.—Fort Wayne parallel circuit, singlemagnet series control, 110 volt direct current lamp, andadjustable resistance coils for same. A single seriesmagnet supplies all the energizing force to operate thelamp. This coil acts upon an armature below it, whicharmature is hinged to a…
Electrical engineering
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