H - Electricity – 02 – P
Patent
H - Electricity
02
P
318/114, 318/60
H02P 7/28 (2006.01) H02P 1/22 (2006.01) H02P 7/282 (2006.01)
Patent
CA 1069170
ABSTRACT OF THE DISCLOSURE A circuit comprising a direct current motor having two parallel oppositely wound field windings, a pair of controlled rectifiers, each connected in series with a respective one of the said field windings. A commutating capacitor couples the controlled rectifiers, and an astable multivibrator are provided for applying gating signals to the two controlled rectifiers alternately for causing con- duction of direct current through the two field windings in alternate complementary conduction periods.
264734
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