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:
Jun. 23, 2015
Filed:
Feb. 26, 2013
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Shigeki Okatake, Tokyo, JP;
Takenobu Nakamura, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
There are provided a current sensor which has a self-diagnosis function and a signal processing circuit. The current sensor is provided with an offset component output circuitwhich extracts an offset component from an output signal of a Hall elementwhich includes a signal component and an offset component, a reference signal generatorwhich outputs a reference signal, and an error signal generation circuitwhich generates an error signal based on an offset component which the offset component output circuitoutputs and a reference signal. The offset component output circuitis provided with a signal amplification circuitwhich amplifies the output of the Hall elementand outputs an output signal and offset component to a low frequency component and the other to a ripple component.