The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Mar. 08, 2007
Ying-chen Hsiao, Hsinchu, TW;
Yi-chen Chen, Hsinchu, TW;
Yi-chen Lin, Hsinchu, TW;
Juh-gua Shiau, Hsinchu, TW;
Ying-Chen Hsiao, Hsinchu, TW;
Yi-Chen Chen, Hsinchu, TW;
Yi-Chen Lin, Hsinchu, TW;
Juh-Gua Shiau, Hsinchu, TW;
Holtek Semiconductor Inc., Hsinchu, TW;
Abstract
A driving apparatus and a driving method for a single phase motor utilizes a driving transistor unit, and an auxiliary driving transistor unit to provide two driving currents with the same direction as the single phase coil. Next, a control unit is used to control the conducting and shutting down of the driving transistor unit and the auxiliary driving transistor unit according to the location of the rotating device of the single phase motor. Thereby, the driving current on the single phase coil recirculates to reduce the vibration and noise of the single phase motor, and prevent the problem of the single phase motor not turning on.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile