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 119
eases, the 2,212 HAWKINS ELECTRICITY difficulties with leakage and retardation increase, until the speedand certainty of signalling are largely reduced. Under suchconditions it was formerly necessary to retransmit all communi-cations at some intermediate station, but this duty is now per-formed by… … ELECTROMAGMET INSULATEDSTOP ARMATURE |[l^_AT_Eltl_ |,^Hii.i7V-. SECTION A CIRCUIT
Electrical engineering
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