Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 89
be placed more or less over the poles of the Field Magnet, in sucha way as to divert acertain portion of themagnetism from thearmature. The second stage inthe development of thedynamo is shown inFig. 14, which repre-sents a separately ex-cited dynamo—that isto say, one in whichthe magnetic field… … ELECTRIC MACHINES. 77 The arrows in the diagram show the direction of thecurrent in the field magnet coils required to produce thepolarity indicated, and the direction of the current in themain circuit when the rotation is in the same direction asbefore. The separately excited dynamo may be…
Electric industries · Electricity
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