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. 04, 1991
Filed:
Jun. 28, 1990
Jun-ichi Nishizawa, Sendai, JP;
Takashige Tamamushi, Sendai, JP;
Koichi Mitamura, Sendai, JP;
Hiroo Takahashi, Izumi, JP;
Kiyoo Mitsui, Sendai, JP;
Mitsuo Ikehara, Izumi, JP;
Toyota Wako, Sendai, JP;
Sinpei Maruyama, Sendai, JP;
Zaidan Hojin Handotai Kenkyu Sinkokai, Sendai, JP;
Tohoku Electric Power Company, Incorporated, Sendai, JP;
Tsuken Electric Ind. Co., Ltd., Sendai, JP;
Abstract
This invention relates to a PWM power converter for switching a plurality of bridge-connected semiconductor switching elements based on PWM signals. As the semiconductor switching elements, elements with a low ON voltage and small conduction loss, and elements with a small switching loss and capable of high-speed switching are combined to improve power conversion efficiency.