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 87
ch as a night connection) the central dis-connecting signal shows. The holding coil should prevent this withits high resistance shunted across the line when N key is thrown. Plan Troubles 81. Hand generator turns hard. 82. On plan 3 or 5, listening key contacts are crossed. Effect: System is short…
Electrical engineering
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