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. 21, 2002
Filed:
May. 16, 2001
Muneharu Yamashita, Toyama-ken, JP;
Abstract
An amplification circuit for electric charge type sensor has a simple circuit configuration in which a common mode noise is adequately cancelled. In the acceleration sensor amplification circuit, the inversion input terminal of an operational amplifier is connected to one end of the acceleration sensor (G sensor). In addition, a feedback circuit including a feedback resistor and a feedback capacitor connected in parallel to each other is connected between the inversion input terminal and the output terminal of the operational amplifier. Furthermore, a cancellation circuit including a cancel resistor and a cancel capacitor connected in parallel to each other is connected between the non-inversion input terminal of the operational amplifier and a reference voltage.