Instructions for testing telegraph lines and the technical arrangements of offices (1878)
Schwendler, Louis, 1838-1882 · London : Trèubner · leaf 17
ame accuracy and sensibility withinwide limits as the Bridge. 2 ELECTRICAL TESTING. HoAvever, both arrangements being in use, a fulldescription and mathematical theory of each will beo-iven in the foUowino; two Sections. SECTION I.wheatstones bridge, I. Explanation of the Diagram.—Figure 1 gives… … w is the comparison coil, the resistance of whichcan be varied between 1 and 10,000 units. X is the unknown resistance to be measured, expressedin terms of the same units as w. ^ is a sensitive galvanometer, having a resistance ofg units. E is the electromotive force of the testing battery. u is a…
Telegraph · Telegraph lines
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-219-92.webp)
