International Library of Technology · Scranton, International Textbook Co. · leaf 156
gh the core, and therebyinducing a current in the secondary coil. 2456. Fig. 979 shows the commercial form of Ruhm-korff coil. The primary coil is wound around the core ofsoft iron wires, and its two ends brought out at/, /. The 1590 PRIN. OF ELECTRIC. AND MAGNETISM. secondary coil, consisting of… … Fig. 979. the terminals at t, t\ and is interrupted by means of amercury break at A and B. The apparatus is also providedwith a commutator C, which commutes or changes the direc-tion of the current in the primary coil. AVhen a batterywhich develops an electromotive force of a few volts…
Electrical engineering
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