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:
Jan. 10, 2012
Filed:
Sep. 14, 2009
Ryuji Yamamoto, Yao, JP;
Nobuyuki Ohtaka, Kadoma, JP;
Ryuji Yamamoto, Yao, JP;
Nobuyuki Ohtaka, Kadoma, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Abstract
A semiconductor circuit () comprises a first terminal section () to be connected to a connection point of two external resistors; a second terminal section () to be connected to an external circuit; a voltage circuit section having a first terminal connected to the second terminal section (); a reference voltage circuit section () which outputs a predetermined voltage; an operational amplifier () having a first input terminal connected to the reference voltage circuit section (), a second input terminal connected to the first terminal section (), and an output terminal connected to a second terminal of the voltage circuit section; an abnormality detecting circuit which detects an abnormal voltage of the first terminal section (); a normal signal generating unit () which generates a normal signal; and a switching circuit which, when the abnormality detecting circuit detects the abnormal voltage, does not output a voltage based on the first terminal section () to the second terminal section () and instead outputs a normal voltage based on the normal signal to the second terminal section ().