American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 209
it divides in proportion to the resistance of each path {see DividedCircuits). In Fig. 140 the coils are shown wound around the bar in opposite direc-tions. The resistance of each wire, i and 2, attached to the coils, is the same, hencean equal amount of current flows through each coil from the… … THEORY DIFFERENTIAL DUPLEX. tendency to make the same end a south pole. Hence, the bar is not magnetized byeither coil, as the effect of one is neutralized, or balanced, by that of the other; quiteas effectively, for instance, as one pound weight in one tray of a scales would balanceanother pound…
Telegraph
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