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:
May. 30, 2017
Filed:
Oct. 15, 2015
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Motomitsu Iwamoto, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-shi, JP;
Abstract
An output voltage delay time caused by the relationship between offset voltage and input voltage is shortened. A single power supply amplifying device includes first and second amplifying units, a state detecting unit, and an offset voltage correcting unit. The first amplifying unit has differential pair transistors and amplifies the difference between input voltages. The second amplifying unit amplifies a first output voltage of the first amplifying unit. The state detecting unit detects a state where a negative offset voltage that causes a second output voltage of the second amplifying unit to be lower than the input voltage occurs, and a potential of the input voltage is lower than the absolute value of the negative offset voltage. The offset voltage correcting unit then corrects the negative offset voltage to a positive offset voltage that causes the second output voltage to be higher than the input voltage.