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. 10, 2019
Filed:
Nov. 30, 2016
Fuji Electric Co., Ltd., Kanagawa, JP;
Shigemi Miyazawa, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Abstract
A drive circuit that operates stably and has a small circuit size. Provided is a switch apparatus including a power semiconductor element connected between a first terminal on a high potential side and a second terminal on a low potential side; a capacitor; a charging section that charges the capacitor for at least a portion of an interval during which the power semiconductor element is OFF; a discharging section that causes the capacitor to gradually discharge, in response to the power semiconductor element becoming ON; and a cutoff section that sets the power semiconductor element to an OFF state, in response to a voltage of the capacitor becoming lower than a threshold voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile