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:
Apr. 02, 2013
Filed:
Dec. 29, 2011
Yun Bai, Shenzhen, CN;
Song-lin Tong, Shenzhen, CN;
Peng Chen, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A power switch circuit includes a control circuit, and first and second detecting circuits. The control circuit includes first and second field effect transistors (FETs) and first and second sensing resistors. The first detecting circuit includes two input terminals connected to the first and second ends of the first sensing resistor and an output terminal connected to the first FET. The first detecting circuit controls the first FET to be turned on or turned off according to the voltages of the first and second ends of the first sensing resistor. The second detecting circuit includes two input terminals connected to the first and second ends of the second sensing resistor and an output terminal connected to the second FET. The second detecting circuit controls the second FET to be turned on or turned off according to the voltages of the first and second ends of the second sensing resistor.