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 365
presents the pulsating character of the current pro-duced by the two coilsacting together in thesame circuit. The cur-rent is thus never zeroin the line as in thecurve in Fig. 321.The armatures of dy-namos are wound with many coils of wire, so that the currentmay be continuous in the external… … Fig. 321. -Graphical Representation of aDirect Current. If I Revo lution \ —Graphical Representationof a Direct Current. The ending of each coil is ^ ojoined to the beginning of theadjacent coil, so that the Fig. 322winding forms a completeclosed circuit, or the coils are all in series. At the…
Electricity · Magnetism
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