An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 387
Fig. 241 a. — Shaft with rotating field and exciter armature. Note gridsacross pole faces. … Fig. 241 b. — Small alternator with exciter (ri>dit) coupled to the shaft. ALTERNATING-CURRENT GENERATORS 353 240. Exciters. In the earlier types of alternators the directcurrent for exciting the field coils was furnished by a littled-c. generator connected with the alternator by a belt. Butin…
Electricity · Magnetism
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