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. 18, 1985
Filed:
Sep. 09, 1982
Applicant:
Inventors:
Tsuneo Ikenoue, Sendai-shi, Miyagi, JP;
Shin-yng Liu, Miyagi, JP;
Naoki Arai, Tokyo, JP;
Shuichi Umemoto, Kanagawa, JP;
Assignees:
Other;
Tohoku Ricoh Co. Ltd., Miyagi, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Micron Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363127 ; 363 53 ;
Abstract
A rectifier using a semiconductor active element as a rectifying element is connected through an overvoltage protection circuit to a terminal voltage comparator for comparing the input voltage and the output voltage thereof. A pulse control circuit is connected to the control terminal of the active element for controlling the same in response to the output from the terminal voltage comparator. Thus, the rectifier can operate at high frequencies with a high degree of efficiency.