American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 386
c 330.25 ohms, and the jointresistance of b and <r is 139 olims. Again the resistance of d is 445-75 ohms and thejoint resistance oi b c d\% 106.5 ohms, and so on to ;/, or zero. As, however, for the reasons given, intermediate coils are placed in, so to speak,double multiple with the coils b,… … THEORY OF ETHERIDGE TRANSMITTER. ^z^ AMERICAN TELEGRAPHY.
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-475-248.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-439-174.webp)
