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 52
Fig. 2,953.—Wiring diagram of booster set with battery connected in the circuit to strengthen transmitting and receiving power of common battery instrument. The primary and secondary windings of special induction coil are connected at one end and the battery cells are con- . nected in series, as…
Electrical engineering
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