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:
Dec. 15, 2015
Filed:
Dec. 31, 2012
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Zhanli Tang, Shanghai, CN;
Xinglin Bai, Chengdu, CN;
Xinglei Yang, Shanghai, CN;
Chengwei Wen, Shanghai, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A surge protection circuit includes a surge protection unit and an interface electrically connected to each other. The surge protection unit includes an internal connection terminal block, three varistors and one discharge tube. The three varistors are electrically connected to the internal connection terminal block, where two varistors are electrically connected to the discharge tube. The discharge tube is also electrically connected to the internal connection terminal block and is grounded. The surge protection circuit can avoid connecting a varistor to the discharge tube in series and reduce a residual voltage of the surge protection circuit.