Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 57
Fig. 54. — House BellCircuit (M. E. S.Co.). j/—Ilis tip Fig. 56. — Telegraph Line. their armatures to the poles of the magnets. In so doing,the armature closes a local circuit consisting of a batteryand a sounder, Fig. 59, which intensifies the click of therelay that might other-wise be… … 36 EXPERIMENTAL ELECTRICITY
Electricity · Electrical engineering
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