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 440
er, since each carbon acts as a positive at every otheralternation, and the carbon consumption is nearly the same,^ 375. Cored carbons are always used in alternating currentlamps to secure a sufficient supply of the carbon vapor tomaintain the currents path at the instant the arc is ex-tinguished,… … Fig. 382.—Single Carbon Automatic Feed Inclosed Arc Lamp. The arc is incosed in the inner glube and ihe lamp -will bum for 150 hours with one set of carbons. 422 PRACTICAL ELECTRICITY, 379. Arc Lamp Circuits.—Arc lamps are operated fromconstant potential or constant current circuits, and suppliedby…
Electricity · Magnetism
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