Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 379
heending of coil No. 1 at bar2; the ending of coil No. 2to bar 3 and to the beginningof coil No. 3, and so on untilfinally the ending of coil 8will connect to the be-ginning of coil 1 at bar 1.The coils are thus all inseries around the armature;the commutator bars form-ing the connecting links… … Fig. 344.—Connecting the ArmatureCoils to the Commutator. ARMATURES. 361 proper insulation between them; 16 bars would have beenrequired had this method been adopted in Fig. 343. Themethod of varying the winding according to the potentialdesired is illustrated in Fig. 345, which represents the…
Electricity · Magnetism
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