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:
Sep. 22, 2009
Filed:
Jun. 21, 2007
Yasumasa Hayakawa, Gunma-ken, JP;
Yasumasa Hayakawa, Gunma-ken, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
An offset adjusting apparatus adjusting an offset of an output signal output from an output terminal of an operational amplifier including one input terminal to which an input signal is to be input via a first resistor and the other input terminal to which a reference voltage is to be applied, the operational amplifier being connected between the one input terminal and the other output terminal, the offset adjusting apparatus comprising: an adjustment resistor configured to be capable of adjusting a resistance value, the adjustment resistor including one end to which an adjustment voltage for adjusting the offset is to be applied and the other end connected to the one input terminal of the operational amplifier; and a controlling unit configured to control the adjustment voltage applied to the adjustment resistor based on a DC level of the output signal to remove the offset.