American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 272
ed be-tween the dynamo machines and the ground, at a point where the potential willbe such as to give a desired ratio in the strength of current as between transmitteropen and closed, and, at the same time, to keep the total resistance of the line wirea t a uniform value whether the transmitter be… … 230 AMERICAN TELEGRAPHY^ The resistances pe, pr, are permanently connected, as shown, between the groundand dynamos d, d. t is a double transmitter, the magnets of which, being in theone local circuit, are jointly affected by the key k. When k is closed the full currentstuength is to the line. The…
Telegraph
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