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:
Apr. 15, 2008
Filed:
Aug. 15, 2006
Ayako Iwanaga, Kyoto, JP;
Tomokazu Furuno, Osaka, JP;
Ayako Iwanaga, Kyoto, JP;
Tomokazu Furuno, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
During PWM control in which an actuator () is connected between the output terminals of a bridge circuit made up of switching elements () and power is applied to the actuator () with signals GU, GL, GU and GL, driving timing signals are generated with a time interval (dead time) during which the switching elements () and the switching elements () are simultaneously turned off, and the actuator () is driven so as to have no overlapping dead time between a pair of half-bridge circuits, achieving response even with a differential input PWM signal (S-S) having a small time difference.