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:
Apr. 24, 2012
Filed:
Oct. 14, 2009
Wei-shuo Tseng, Taoyuan Hsien, TW;
Chia-pin Wei, Taoyuan Hsien, TW;
Chih-hsiang Kuo, Taoyuan Hsien, TW;
Wei-Shuo Tseng, Taoyuan Hsien, TW;
Chia-Pin Wei, Taoyuan Hsien, TW;
Chih-Hsiang Kuo, Taoyuan Hsien, TW;
Delta Electronics, Inc., Taoyuan Hsien, TW;
Abstract
A fan includes a motor control device which is electrically connected with a motor and an alternating current power source. The motor control device includes a converting circuit, a power factor correction circuit and a motor controlling circuit. The voltage of the alternating current power source is converted to be direct current voltage by the converting circuit and the power factor correction circuit, and then the direct current voltage is outputted to the motor control circuit. The motor controlling circuit generates a driving signal in accordance with the direct current voltage for driving the motor to operate.