Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 66
d by means of thegenerator field rheostat. The differential motor of Fig. 66 has been explained in Paragraph 40. The principaladvantage of the motor generator in Fig. 66 is that it maintains a uniform speed undervariable load which results in a uniform frequency of current at the terminals of… … EMO PLATES MOTOR -FfELD GtMERATOR FJELD
Telegraph, Wireless
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