Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 77
ribution.In other words, the presence of resistance in the coils of the armaturereduces the ratio of currents during the first half of the commutationperiod, and increases this ratio during the second half. This isshown graphically by the curved line in Fig. 02, the straight lineindicating the… … Fig. (.S. Effect of Self-induction in CommutationCurves induction. Self-induction tends to retard any change in the current,so that the same is not completely reversed at the end of the corn- el 52 DIRECT-CURRENT DYNAMOS mutation period. At the last instant, then, as the surface of contactbetween…
Electrical engineering
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