International Library of Technology · Scranton, International Textbook Co. · leaf 415
ced. This connection of the two windings is obtained by con-necting the positive brush {3, Fig. 1154) of one windingwith the negative {3, Fig. 1154) of the other, the externalcircuit being connected between the two remaining brushes(1 and 4, Fig. 1154). In the larger sizes of these machines, three… … APPLIED ELECTRICITY. 1947 end to end, by making the brushes have a large arc ofcontact, or, what amounts to the same thing, using twobrushes on each side, spaced a distance equal to the desiredarc of contact and connected permanently together. Thisis represented in Fig. 1155, a and a being the…
Electrical engineering
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