Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 51
pposing coil is such as to tend to neutralizethat of the main line coil. As, however, the strength of the local current is considerablyless than that of the main line current, the latter prevails, and holds the relay tongueagainst its marking stop as shown. Due to the drop across the resistance, R,… … Fig. 9 46. When the distant transmitter reverses the direction of main line current, therejisnecessarily an interval during which the main line is entirely cut off from a source ofcurrent. During this period the main line current falls in value until the local currentflowing through the opposing…
Telegraph
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