Multiplex combinations for economic telegraphy and telephony (1913)
Jones, Rupert Forrest · leaf 58
eacribed in thia article., sinceit is desired only to show how this may be used with multiplextelephony equally as well as the ordinary telegraph relays^depending wholly on series connection for operation. The polar duplex is used more than any other in the United States, The relay ia of the… … #83. E and F of the equipments at Stations A and B respectivelyare called the artificial lines. Each contains resistance andcapacity equal to that of the line wire between the instruments.The armature of each relay contains a permanent north magnetic poleon one side and a south pole on the other.…
Multiplexing · Telegraph · Telephone · Telephone systems · Theses
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