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:
Jun. 10, 2014
Filed:
Sep. 30, 2011
Yi-hua Lee, Taoyuan Shien, TW;
Yueh-shan Lin, Taoyuan Shien, TW;
Yan-lin Chen, Taoyuan Shien, TW;
Chih-hua Lin, Taoyuan Shien, TW;
Te-chung Liu, Taoyuan Shien, TW;
Yi-Hua Lee, Taoyuan Shien, TW;
Yueh-Shan Lin, Taoyuan Shien, TW;
Yan-Lin Chen, Taoyuan Shien, TW;
Chih-Hua Lin, Taoyuan Shien, TW;
Te-Chung Liu, Taoyuan Shien, TW;
Delta Electronics, Inc., Taoyuan County, TW;
Abstract
A ventilation apparatus with a two-section feedback compensation control and a method for operating the same are disclosed. The ventilation apparatus includes a power conversion unit, a driven circuit, a DC motor, a current-sensing unit, a voltage compensation unit, and a control unit. The power conversion unit receives and converts an AC power voltage into a DC power voltage. The driven circuit receives the DC power voltage and outputs a driven voltage. The DC motor is driven through the driven voltage. The current-sensing unit senses an output current of the DC motor. The control unit receives the output current to compare to a threshold current value, thus controlling the voltage compensation unit. Accordingly, the DC power voltage is adjusted to adjust the speed of the DC motor.