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 129
are in the main circuit which connects the battery and ground through the repeating contactpoints of the opposite sounder. The local sounder magnets are operated by the relay magnets. … Fig. 3,068.—Bunnell tongue contact repeater as used for Milliken repeater system. Dup-licate connections are made at and between the special relay and repeater or sounderhere shown and consequently the relay operates the repeater and produces the loud soundfrom which the signals are read. THE…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
