Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 191
demagnetizing action of the conductors shown in Fig. 118 ispositive, that is, it is a genuine demagnetizing action whichopposes the passage of the flux <t> through the armature, as maybe seen by applying the rule which correlates direction of currentin a coil and direction of magnetizing… … Fig. 120. backward lead from the line AB, the armature has a magnetiz-ing action which helps the passage of the flux <l> through thearmature. In a motor, on the other hand, forward lead of brushesgives magnetizing action, and backward lead of brushes givesdemagnetizing action of the armature.…
Dynamos · Electric motors
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