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 168
Fig. 123.—Commercial Type ofRheostat. CIBCUITS AXD THEIR RESISTANCE. 149 … Fig. 124.—Commercial Rheostat. Diagram of connections of theresistance coils. regulating the current in connnercial eleetric circuit? no greatdegree of accuracy of the resistance coils is required, as is thecase in laboratory rheostats, ^j 165. Fig. 123 illustrates a commercial type of rheostat,…
Electricity · Magnetism
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