Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 28, 2010
Patent Application Number
11826892
Date Filed
July 19, 2007
Patent Primary Examiner
Patent abstract
A valve timing controller has the drive circuit which performs a feedback control of the energization to the electric motor based on the target rotation speed and the actual rotation speed of the electric motor, and rotates the electric motor to the target rotation direction. An invalid switch part of the drive circuit suspends the feedback control at the time of change of the target rotation direction.
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