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:
Nov. 24, 2015
Filed:
Jun. 03, 2014
Toshiba Mitsubishi-electric Industrial Systems Corp., Chuo-ku, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Hiroyuki Ogawa, Tokyo, JP;
Takayuki Sakurai, Tokyo, JP;
Tetsuo Yoshimitsu, Tokyo, JP;
Tatsuya Hirose, Inagi, JP;
Satoshi Hiroshima, Kawasaki, JP;
Masayuki Hikita, Fukuoka-ken, JP;
Masahiro Kozako, Fukuoka-ken, JP;
Takahisa Ueno, Oita-ken, JP;
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Chuo-ku, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
A signal generator generates a combined signal that is generated only in the period where supply of a pulse signal is effected, a pulse signal whose frequency is of a higher impulse repetition frequency than the frequency of the period setting signal and whose amplitude represents a voltage value that is lower than the high voltage HVDC value. A semiconductor switch accumulates electric charge on a capacitative element by means of the high voltage HVDC from the high voltage generator when the voltage value of the combined signal is lower than the set gate voltage value and generates an impulse voltage whose peak value is the value of the high voltage HVDC, by means of the electric charge that is discharged from the capacitative element when the voltage value of the combined signal exceeds the set gate voltage value.