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:
Dec. 21, 2021
Filed:
Oct. 02, 2019
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Noritaka Kishi, Nagaokakyo, JP;
Yasuhiro Shimizu, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A current sensor that outputs an output signal according to a signal magnetic field that is generated by a current to be measured is provided. The current sensor includes at least one magnetic sensor, a temperature sensor, an amplifier, and an offset adjusting circuit. The magnetic sensor generates a sensor signal commensurate with the signal magnetic field. The temperature sensor detects an ambient temperature. The amplifier amplifies the sensor signal at an amplification rate commensurate with the detected temperature and generates the output signal. The offset adjusting circuit adjusts an offset of the output signal. The offset adjusting circuit adjusts an offset in accordance with a relationship (mathematical expression) that holds between an output signal under no signal magnetic field and an amplification rate corresponding to the temperature.