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:
Jun. 21, 1988
Filed:
Dec. 04, 1986
Applicant:
Inventors:
Yukinori Tsuruta, Sagamihara, JP;
Kazuto Kawakami, Fuchu, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawaski, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307633 ; 307264 ; 307305 ;
Abstract
An off-gate circuit for a GTO thyristor comprises a power source for supplying current to the circuit at a predetermined voltage, and a switching circuit connected to the power source for supplying off-gate current to the GTO thyristor at least two different current rates.