Датотека:EB1911 Telegraph - Connexions for Double-current Working.jpg

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Izvor: Викизворник

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Opis
English: The general arrangement of the connexions for double-current working; the galvanometer G is used for the purpose of indicating whether a station is calling, in case the relay sticks or is out of adjustment. The key K (shown in general plan), when worked, sends reversed currents from the battery B.
Datum published 1911
Izvor Encyclopædia Britannica (11th ed.), v. 26, 1911, “Telegraph,” p. 517, Fig. 21.
Autor Harry Robert Kempe (section author)
Dozvola
(Ponovno korišćenje ove datoteke)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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trenutna20:35, 19. februar 2016.Minijatura za verziju na dan 20:35, 19. februar 2016.665 × 616 (83 kB)Library Guy{{Information |Description ={{en|1=The general arrangement of the connexions for double-current working; the galvanometer G is used for the purpose of indicating whether a station is calling, in case the relay sticks or is out of adjustment. The key...

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