International Library of Technology · Scranton, International Textbook Co. · leaf 411
ides a fringe that reverses the current in thecoil passing under the brush, and hence brings about thechange in the direction of the current with but little sparking. 73. Field Coils.—-The field coils are wound on forms, andwhile the asbestos-covered wire is being wound it is treatedwith a mixture… … Fig. 73. Armature.—Fig. 48 shows a half section of theG. E. 52 armature, and its construction is typical of manyof the railway-motor armatures now in use. The core is pro-vided with 29 slots. One side of 6 coils goes into each slot, § 24 ELECTRIC RAILWAYS. 67 so that there are 87 coils altogether,…
Electrical engineering
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