A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 312
ection and on depressingK, it flows in the opposite direction. Clamps,operated by handles, are provided so as to closeeither of the keys permanently, if so desired. Key, Reversing, of Quadruplex Tele-graphic System A key employed to reverse the direction of the current and sooperate one of the… … Fig. 329. Short- Circuit Key. Such a short-circuit key is provided for thepurpose of protecting the galvanometer from in-jury by large currents being accidentally passedthrough its coils. In the form shown in Fig. 329,the spring S, rests against a platinum contact;:but when depressed by the…
Electricity · Electrical engineering
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