Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 366
nt wound or compound wound, dependingupon the nature of the service. When the load is vari- ROTARY CONVERTERS 367 able, as in railway service, the machine is compoundwound, which tends to maintain the direct current volt-age constant, by compensating for the drop in the supplycircuit as the load… … Fig. 170. Allis-Chalmers 25 Cycle Rotary Converter (Commutator End). direct current brushes and to a slight extent upon thefield excitation. In any given converter, therefore, thedirect current voltage depends practically upon the volt-age of the alternating current applied. To a smaller ex-tent it…
Electricity
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