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 409
SIDE BASE CONTACTLOW C-P POSITIONl&H C-P POSITION Figs. 3,444 to 3,446.—Hylo turn down incandescent lamps. Owing to the difficulty of manu-facturing a mechanically strong one or one-half candle power filament for direct operationon voltages as high as 110* the two filaments are connected in…
Electrical engineering
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