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 68
named colors which follow denote the master colors. In making the properconnections the cable is fanned out or formed.!! THE TELEPHONE 2,161 in writing, a variable current is sent out which reproduces thesame writing at a distance. With this apparatus a verbal order can be given and then verifiedin… … FlG. 2,973.—Western Electric -automatic intercommunicating telephone set. This type ofinstrument is for general use where a high grade of intercommunication is desired. Therecan be as many stations in the system as there are connected itation buttons on the inter-phone box connecting set. Four…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
