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:
Feb. 27, 2007
Filed:
Jul. 29, 2003
Mamoru Kitamura, Tokyo, JP;
Mamoru Kitamura, Tokyo, JP;
Niigata Seimitsu, Co., Ltd., , JP;
Abstract
A comparator () for compensating the pulse width of the drive control signal of a power amplifier () by using a sense signal of an offset voltage generated between the nodes (H, I) of the power amplifier () is provided to enlarge the time width from the OFF operation of a pair of switching elements (QQ) to the ON operation of a pair of switching elements (QQ), thereby preventing the inconvenience that the switching elements (QQ) simultaneously turn on and suppressing a through-current. The pulse width for turning on the switching elements (QQ) is so corrected as to be wider or narrower than the pulse width for turning on the switching elements (QQ), thereby adjusting the intensity of an impressing voltage and canceling the offset voltage.