Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 276
rdinary hand operated telephone magneto, there will not besufficient time to overcome the inertia of the moving parts (ar-mature, stem and hammer) and cause the hammer to strikeduring an alternation. ELECTRIC BELLS 2,367 Ques. What will be the effect of a high frequency cur-rent on the moving part?… … Figs. 3,242 to 3,244.—Diagrams and sine curve illustrating operation of the elementaryalternating current bell shown in fig. 3,241. The path of the current during each alter-nation is, in figs. 3,242 and 3,243, easily traced through the_ elementary alternator andmagnets, and the similar induced…
Electrical engineering
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