Simultaneous telephony and power transmission over the same wires (1906)
Amrine, Thomas Hamer, Carr, Charles Clement · leaf 24
it. Hence this schemewas abandoneo.. Two of the schemes described had each been,so to speak,halfway a success. The one shown in Fig.3 worked well for axiy variationof pressure,but it was possible to use it only if the current onthe line remained constant. Tiie one shown in Pis.5 was found to… … -6~ <^-S was an ordinary telephone induction coil used as a series transformer. Care was taken as in the connections in Fig.5 to have both local circuits on the same side of the line. The receiver, circuits should be grounded as a protection to the person using the telephone in case of failure…
Electric power transmission · Electric lines · Telephone · Telephone lines · Theses
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