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:
Feb. 07, 2017
Filed:
Mar. 04, 2014
Applicant:
Shenzhen Treasure City Technology Co., Ltd., Shenzhen, CN;
Assignee:
ShenZhen Treasure City Technology Co., LTD., ShenZhen, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); F04D 25/02 (2006.01); F04D 25/06 (2006.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); F04D 25/02 (2013.01); F04D 25/06 (2013.01); F04D 25/068 (2013.01); F04D 27/00 (2013.01);
Abstract
A power supply circuit includes a connector for a fan, a speed adjusting circuit, a speed feedback circuit, a control module, first and second power sources, and a switching module. The speed adjusting circuit is connected to a modulation pin of the connector. The speed feedback circuit is connected to a speed pin of the connector. The control module receives a speed signal from the fan through the speed feedback circuit and outputs signals correspondingly. The switching module selects the first or the second power source to supply power for the fan according to the signals from the control module.