Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 240
ation is quite different. With wireless telegraphy the key is depressed and a cycle of trans-formation produced whereby a wave motion is set up in the ether, butthis wave motion is inadequate for wireless telephone transmissionowing to its periodic damping character. The human voice, or soundwaves… … RECIIVIMB STATION rarMIIWG STATION GROUNP— ^±=- Figs. 3,191 and 3,192.—Diagrams showing receiving and transmitting wireless telephone stations.The dynamo supplies direct current to the transmitting arc which produces high frequencyoscillations in the transformer. A telephone transmitter and hot…
Electrical engineering
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