A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 493
S, pulls the lever back when the currentceases to flow through M. The dots and dashes of the Morse alphabet arereproduced by the sounder, as audible signals,that are distinguished by the operator by meansof the different sounds produced by the up anddown stroke of the lever as well as by the differ… … Fig. 511. Telegraphic Sounder. Sounder, Repeating A telegraphic sounder which repeats the telegraphic dis-patch into another circuit. Sounds, Magnetic Faint clicks heard on the magnetization of a readily mag-netizable substance. One of the earlier forms of Reis telephone,operated by means of a…
Electricity · Electrical engineering
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