The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 39
irections. The term is applicable to other than electricor magnetic subjects. Synonym—JJlotropic. Annealing, Electric. Annealing by the heat produced by the passage of the electric current through the body to be annealed.The object is clamped or otherwise brought into a circuit, and acurrent strong… … Fig. 14. Annunciator. for announcing the entering of any given room or window in abuilding protected by a burglar alarm. A usual system comprises for each annunciator an electro-magnet.Its armature is normally held away from its poles by a spring, andwhen in that position a latch connected to the…
Electricity
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