Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 17
sing through each of the two windings of the home relay; as in thecase of Figure 2, the currents through the two windings neutralize each other, and therelay armature remains on its spacing stop; i. e., the home relay is entirely unaffectedby the transmission of the signal from the home station to… … T ML=LINE WIRE! =1550 V W -®-> 80 V. GENERATOR Fig.
Telegraph
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