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:
Jan. 19, 2016
Filed:
Sep. 23, 2011
Yueh-lung Huang, Taoyuan Hsien, TW;
Tsung-jung Hsieh, Taoyuan Hsien, TW;
Yen-hung Wu, Taoyuan Hsien, TW;
Yueh-Lung Huang, Taoyuan Hsien, TW;
Tsung-Jung Hsieh, Taoyuan Hsien, TW;
Yen-Hung Wu, Taoyuan Hsien, TW;
DELTA ELECTRONICS, INC., Taoyuan, TW;
Abstract
An embodiment of the invention provides an AC motor that is driven by an AC voltage. The AC motor includes a motor coil, a switch circuit, a position detector and a controller. The motor coil receives the AC voltage to drive an axis of the motor. The switch circuit is coupled to the motor coil and controls a current passing through the motor coil. The position detector detects the position of a motor rotor to output a polarity signal. The controller controls the switch circuit according to the polarity signal and the AC voltage to make the current to be a first current with a first direction or a second current with a second direction.