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:
Sep. 20, 2016
Filed:
Oct. 30, 2012
Yuto Sasaki, Tokyo, JP;
Yuto Sasaki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control unit controls an on/off operation of a switching unit such that a first DC pulse voltage is applied across an electrode gap from a pulse-voltage generation unit adjusted to a first impedance, and when a detection unit detects a preliminary discharge, a second DC pulse voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a second impedance, which is lower than the first impedance, so as to generate a main discharge in the electrode gap, and during an idle time since the main discharge is completed until the next preliminary discharge is started, a third DC pulse voltage that is equal to or higher than a discharge arc voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a third impedance, which is higher than the first impedance.