Instructions for testing telegraph lines and the technical arrangements of offices (1878)
Schwendler, Louis, 1838-1882 · London : Trèubner · leaf 204
nect the ends of the two lines to the terminals I and II ofthe Bridge. If we cannot get balance, even when w = o, v^e mustinterchange the two wires between the terminals I and II. Clearlyif the two lines are approximately of the same absolute conductionresistance, the faulty line must be connected… … It is in this case also assumed that except at the faultthe loop has no perceptible leakage. If balance is ob-tained without using the shunts/ then we have X + lu = y tlie two differential coils being supposed to have equalmasnetic effects. FurtherThus W = X -t yW - w X 2 (54) 1 Shunts will not…
Telegraph · Telegraph lines
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-151-53.webp)
