Elementary telegraphy : a manual for students; written specially to meet the requirements of the ordinary grade of the subject as published in the syllabus of the city and guilds of London Institute (1910)
Pendry, H. W. (Henry Walter) · London ; New York : Whittaker & Co. · leaf 207
ciliate stationD.C. universal liatterics. system whose connections arc shown in Fig. 1(51). At anintermediate station, if llic Icsistances of the sections are2K)t approximately c((iial, a coil resistance various isplaced in the snialh]-. The changes necessilatcnl by thisprovision arc indicated in… … hatterv Wi Fill. 171. — DilloiiuUal (Jupkx: uiiivcrsal batterii;.s up station. differential dnplex as adapted for the universalsystem nectl only be considered as arranged fordouble current. The up station con-nections are shown in Fig. 171. Toassist the memory the ()-terminalswitch may be lettered…
Telegraph
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