Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 92
Bijur).S is a solenoid; D a spring; Ci and C2 taps from a resister; Q and Qo vessels containing mercury.The magnet and spring are So designed that for a given current, the pulls of the magnet andthe spring are the same, independent of the position of the lever, L; therefore, motion willcontinue… … 82 WIRING,DIAGRAMS OF ELECTRICAL APPARATUS
Electric wiring
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