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 223
aft causes thepointer, P, to sweep over thescale. The coils for large sizes ofinstruments are generally woundwith a few turns of flat insulatedcopper ribbon having a very low resistance. These metersare adapted for use with alternating or direct currents. 208. Weston Ammeter.—The construction of… … Fig. 194.—Weston Ammeter with Self-Contained Shunt. shown in Fig. 194, and interior views in Figs. 195 and 196.A permanent horseshoe magnet, M, is fitted with soft iron pole pieces, P P, Fig,197, between which astationary cjdinder ofsoft iron, C, is sup-ported by a brass pieceextending across…
Electricity · Magnetism
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