Electricity: motive power systems – Positional servo systems – Pulse-width modulated power input to motor
Reexamination Certificate
2005-09-27
2005-09-27
Patel, Rajnikant B. (Department: 2838)
Electricity: motive power systems
Positional servo systems
Pulse-width modulated power input to motor
C318S530000
Reexamination Certificate
active
06949906
ABSTRACT:
A driving circuit of a DC motor includes a control circuit for providing a control signal, and a motor drive circuit commanded by the control circuit for providing respective command signals for the switches of an output power stage connected to the DC motor. The output power stage is connected to a power supply line and drives the windings of the DC motor. The driving circuit prevents generation of voltage surges having a significant magnitude on the power supply line because the driving circuit has logic circuits for preventing any substantial inversion in the direction of current flow in the supply lines when the DC motor operates as a current generator.
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Boscolo Michele
Galbiati Ezio
Viti Marco
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Jorgenson Lisa K.
Patel Rajnikant B.
STMicroelectronics S.r.l.
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