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:
Oct. 15, 2019
Filed:
Dec. 07, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
Provided is a gain control amplification device having a wide range and high accuracy and configured to adapt measurement target current to the input range of an A/D converter. The gain control amplification device includes: a plurality of differential amplifiers having different gains with respect to measurement target current or voltage; a threshold control circuit for comparing output of the differential amplifier with threshold voltage; a switch for selecting output of one of the plurality of differential amplifiers on the basis of output of the threshold control circuit; and an offset control circuit OF and an addition circuit for adding offset voltage to output of one of the differential amplifiers.