A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 532
Tel.] 520 [Tel. A magneto-telephone constitutes in reality amagneto-electric machine, driven or propelled bythe voice of the speaker, in which the currentsso produced instead of being commuted are em-ployed uncommuted to reproduce the utteredspeech. In actual practice the instrument above… … 550. Telephone Circuit. fihone, in which the to-and-fro motions of thetransmitting diaphragm are caused to vary theresistance of a button of carbon, or a variable con-tact transmitter similar tothat employed by Reis insome of his instruments.The variable resistanceis placed in the circuit ofa…
Electricity · Electrical engineering
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