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:
Mar. 09, 1976
Filed:
Jun. 20, 1974
Applicant:
Inventor:
Masayoshi Kumano, Amagaski, JA;
Assignee:
Mitsubishi Denki Kabushi Kaisha, Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
321 / ; 3072 / ; 307305 ;
Abstract
A circuit for reducing thyristor turn-off time includes a thyristor connected between a power source and a load. A voltage source is connected between the anode and the cathode of the thyristor for applying across the anode and the cathode of the thyristor, upon actuation of a switch, an electrical signal sufficient to block the forward current of the thyristor. A rectifier and an impedance connected between the gate and the cathode of the thyristor cause a reverse current to flow in the gate of the thyristor upon application of the voltage source.