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:
Oct. 04, 2011
Filed:
Dec. 22, 2009
Yoichi Okubo, Tokorozawa, JP;
Manabu Nakamura, Akishima, JP;
Junya Dosaka, Hamuta, JP;
Yasuhiro Takeda, Kodaira, JP;
Taizo Ito, Kodaira, JP;
Naoki Hongo, Ome, JP;
Taizo Yamawaki, Tokyo, JP;
Takashi Kawamoto, Tokyo, JP;
Akira Maeki, Tokyo, JP;
Yoichi Okubo, Tokorozawa, JP;
Manabu Nakamura, Akishima, JP;
Junya Dosaka, Hamuta, JP;
Yasuhiro Takeda, Kodaira, JP;
Taizo Ito, Kodaira, JP;
Naoki Hongo, Ome, JP;
Taizo Yamawaki, Tokyo, JP;
Takashi Kawamoto, Tokyo, JP;
Akira Maeki, Tokyo, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
A power circuit used for an amplifier, which includes an amplifier provided with a linear amplifier serving as a voltage source, a DC/DC converter serving as a current source, a hysteresis comparator controlling the DC/DC converter, and a current detector detecting output current from the linear amplifier to output the detected output current to the hysteresis comparator; and a switching restricting device for restricting a switching interval in the DC/DC converter such that the switching interval is not equal to or less than a constant time or is not shorter than the constant time.