Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 329
s Lighting Spark Coil.—The function of thespark coil used in electric gas lighting is to increase the self-induction of the circuit at break, as when the chain of aratchet burner is pulled. A coil is inserted in series with thebattery circuit and the burner, and the heat of the spark onbreaking the… … Fig. 278.—Gas Igniting SparkCoil with Laminated Coi-e. inches long. The core ie not sohd, but consists of a bundle of softiron wirey, which greatly increases the inductive action by dimin-ishing the eddy currents, ^ 292. Exp. 83 : Connect a galvanometer in parallel with a helix of fineAvire, Fig.…
Electricity · Magnetism
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