A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 458
ery near to-gether by the armatures at n, n, will be of thesame polarity as N, when no current is passingthrough the coils m, m; but when such currentdoes pass, one of these poles becomes of strongernorth polarity, while the other changes its polar-ity to south. By these means to-and fro movements… … Fig. 482. Polarized Relay. by the coils m, m, and movement in the oppositedirection, on the losing of this magnetism onbreaking the circuit, by the permanent magnet-ism of the steel magnet N S. These movements are imparted to the soft ironlever c, c, pivoted at B, and passing between theclosely…
Electricity · Electrical engineering
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