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. 01, 2015
Filed:
Jun. 28, 2013
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Siran Wang, Hangzhou, CN;
Yike Li, Chengdu, CN;
Kun Yi, Chengdu, CN;
Yuancheng Ren, Hangzhou, CN;
Junming Zhang, Hangzhou, CN;
En Li, Hangzhou, CN;
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Abstract
An AC signal detector having: a rectify circuit having a first input terminal and a second input terminal configured to receive an AC signal, and an output terminal configured to provide a rectified signal based on the AC signal; a detecting circuit having an input terminal coupled to the output terminal of the rectify circuit to receive the rectified signal, and an output terminal configured to provide a square signal based on the rectified signal; and an unplug indicate circuit having an input terminal coupled to the detecting circuit to receive the square signal, and an output terminal configured to provide an unplug indicate signal based on the square signal.