Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1079
ends of the coil become commutator bars, making the coilcontinuous from one end of the commutator bar to the endof the diametrically opposite commutator bar. To increase the electro-motive force. The greater the 1044 Steam Engineering field strength, and the higher the speed the greater… … \ Fig. 438separately and self-excited series dynamo. In order to further increase the electro-motive forcemore turns or loops of wire must be wound on the arma-ture. A coil of 16 turns as in Pig. 435 will give an electro-motive force 16 times as great as a coil like Fig. 426. Ref-erence to Fig. 436…
