Control circuit for reducing field voltage in d.c. motors

Details Control circuit for reducing field voltage in d.c. motors Control circuit for reducing field voltage in d.c. motors

H - Electricity

02

P

318/115

H02P 7/29 (2006.01) H02H 7/08 (2006.01)

Patent

CA 1142583

ABSTRACT A circuit arrangement is disclosed for reducing field voltage peaks in direct current motors which are energized by way of an electronic D.C. regulator, and which have an exciter winding connected with the arma- ture and commutating pole windings by means of diodes. The circuit arrangement includes a choke coil connected in series with the exciter winding. In addition, a resistor is connected in parallel with the exciter wind- ing. This arrangement prevents a rapid rise in the field current or the magnetic field flux of the motor. -1-

331223

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