Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · 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 Core. inches long. The core is not solid, but consists of a bundle of sofiiron wires, which greatly increases the inductive action by diminishingthe eddy currents, r. 2d2. Exp. 83 : Connect a galvanometer in parallel with a helix of finewire, Fig.…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
