Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 673
lf-induction, which stops off tele-phone cm-rents, but does not prevent the bell ringing. The disadvantage isthat all the bells ring when any one of them is started ; and it is necessary,therefore, to have some code of signals by which calls for different stationsmay be distinguished. 660…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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