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:
Apr. 23, 1985
Filed:
Sep. 02, 1982
Tsuneo Ikenoue, Sendai-shi, Miyagi, JP;
Shin-yng Liu, Miyagi, JP;
Naoki Arai, Tokyo, JP;
Shuichi Umemoto, Kanagawa, JP;
Other;
Tohoku Ricoh Co., Ltd., Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Micron Kiki Co. Ltd., Tokyo, JP;
Abstract
In a DC-DC converter of the type in which an inductance stores energy when a main switching transistor is turned on and releases the stored energy when the main switching transistor is turned off, a semiconductor active element is used as a flywheel element which is turned off when the main switching element is turned on, but is turned on to provide the path for the current established by the release of the stored energy, and the signal which is substantially in synchronism with the switching operation of the main switching transistor is applied to the control terminal of the semiconductor active element so as to cause it to turn on and off.