A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 60
ring the bell; orthe bell is rung by clockwork, which is throwninto action by the passage of a current through anelectro-magnet. (See Bell, Electro-Mechanical\) Bell, Differential Electric An electric bell, the magnetizing coils of whichare differentially wound. Differential winding is ot advantage… … netic bell in which the movements of the bellarmature are obtained by the reversal ofpolarity that takes place when alternating cur-rents are pass-ed through the \coils of a sim-ple, single coil,Siemens - arma- e* Fig. 45. Siemens-Armature Form The details ofElectro-Magnetic -Bell. will be readily…
Electricity · Electrical engineering
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