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 223
d Coil Ammeter. 204 PRACTICAL ELECTRICITY. 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 cylinder ofsoft iron, C, is sup-ported by a brass pieceextending across thepole… … 194,-^Weston Ammeter with Self-Contained Shunt. form Theis shown in Fig. 198. It consists of a rectangularwound upon a bobbin of thin sheet copper or aluminum anddelicately suspended be-tween jewel bearings.The terminals of the coilare connected to the hori-zontal spiral springs,against which the…
Electricity · Magnetism
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