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. 26, 2012
Filed:
May. 16, 2008
Zong BO HU, Shenzhen, CN;
Ying Qu, Shenzhen, CN;
Kevin Donald Wildash, Shenzhen, CN;
Wai Kin Chan, Shenzhen, CN;
Wing Ling Cheng, Taipo, HK;
Zong Bo Hu, Shenzhen, CN;
Ying Qu, Shenzhen, CN;
Kevin Donald Wildash, Shenzhen, CN;
Wai Kin Chan, Shenzhen, CN;
Wing Ling Cheng, Taipo, HK;
Astec International Limited, Kwun Tong, Kowloon, HK;
Abstract
A control circuit for controlling a switching device having a first terminal, a second terminal, and a control terminal is disclosed. The control circuit includes a first diode for coupling to the first terminal of the switching device, a second diode for coupling to the second terminal of the switching device, a first transistor for coupling to the control terminal of the switching device, and a second transistor coupled to the second diode. The first transistor is coupled to the first diode. The control circuit is configured to allow current flow in only one direction between the first and second terminals of the switching device.