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:
Sep. 28, 2010
Filed:
Jun. 18, 2007
Aiqian Peng, Zhongshan, CN;
Wenwei Huang, Zhongshan, CN;
Maosen Zeng, Zhongshan, CN;
Zhongshan Broad-Ocean Motor Co., Ltd., Zhongshan, CN;
Abstract
The invention teaches a speed control system for a brushless DC motor for a ceiling fan, comprising a power circuit, a microprocessor circuit, a power drive circuit, a speed regulation circuit, and a brushless DC permanent magnetic motor, wherein the input terminal of the power circuitis connected to the output terminalof an AC power source, the output terminal of the power circuitserves to power the various circuits, the output terminal of the microprocessor circuitis connected to the input terminal of the power drive circuit, the output terminal of the power drive circuitis connected to the coil windingsof the brushless DC permanent magnetic motor, and the output terminal of the speed regulation circuit is connected to the input terminal of the microprocessor circuit. The speed control system of the invention provides the advantages of low energy consumption, low noise during the operation of the motor, and a stable operation at low speeds.