Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 335
inals. The function of an induction coil is to transform the energydelivered to its primary from any given voltage to a higheror lower voltage. While a current of low pressure may thusbe transformed into one of a very high pressure, the latterloses in current what it gains in pressure, so that the… … Fig. 284.—Induction or Spark Coil.For use with direct cnrrents. ductibn Coil.— The principle ofthe transformer is utilized in induction coils constructed togenerate very high electromotive forces, capable of overcomingthe resistance of the air and causing sparks to pass across airgaps. The…
Electricity · Magnetism
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