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. 03, 2017
Filed:
Dec. 16, 2014
Applicant:
Asia Vital Components Co., Ltd., New Taipei, TW;
Inventor:
Po-Sheng Huang, New Taipei, TW;
Assignee:
Asia Vital Components Co., Ltd., New Taipei, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 3/12 (2006.01); H02P 3/00 (2006.01);
U.S. Cl.
CPC ...
H02P 3/12 (2013.01);
Abstract
The present invention relates to a power-off brake circuit for a DC fan, which comprises a control unit, a motor driver unit, a switch unit, a power-off protection unit, and a brake unit and a brake unit. The control unit is coupled to the motor driver unit, the switch unit, the power-off protection unit. The brake unit is coupled to the motor driver unit and the power-off protection unit. By means of the circuit design of the present invention, the independent brake loop is used to achieve the effects of power-off brake and of the accurate control of rotating speed is improved.