Electricity: motive power systems – Limitation of motor load – current – torque or force
Reexamination Certificate
2007-12-18
2007-12-18
Patel, Rajnikant B. (Department: 2838)
Electricity: motive power systems
Limitation of motor load, current, torque or force
C318S254100, C363S039000
Reexamination Certificate
active
10490967
ABSTRACT:
A motor control circuit for controlling a motor, the circuit comprising a switched mode power supply operable to drive a full bridge switching transistor arrangement and to provide a stable voltage to the motor control circuit, wherein the switching transistor arrangement is connectable to the windings of the motor to be controlled, and wherein the switching transistor arrangement comprises: a first set of transistors in an upper part of the full bridge and a second set of transistors in a lower part of the full bridge, the first set of transistors being driven by a first output of the switched mode power supply and the second set of transistors being driven by a second output of the switched mode power supply.
REFERENCES:
patent: 5598093 (1997-01-01), Acatrinei
patent: 5825597 (1998-10-01), Young
Biswas S K et al: “Gate drive methods for IGBTs in bridge configurations” Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE Denver, CO, USA Oct. 2-6, 1994, New York, NY, USA,IEEE, Oct. 2, 1994, pp. 1310-1316, XP010124238 ISBN: 0-7803-1993-I.
Riddoch Henry
Strike Nigel D.
Hancock Hughey LLP
Minebea Co. Ltd.
Patel Rajnikant B.
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