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:
Sep. 07, 1982
Filed:
Mar. 24, 1980
Applicant:
Inventor:
Shingo Kamiya, Hamamatsu, JP;
Assignee:
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ; H03F / ;
U.S. Cl.
CPC ...
330297 ; 330263 ;
Abstract
A power amplifying circuit detects the crest factor of an electric signal, especially an audio signal, requiring amplification. In case this crest factor is great, the level of supply voltage for power amplifying elements of the power amplifying circuit is raised, and conversely in case the crest factor is small, the supply voltage level is lowered, thereby minimizing the development of distortions in the power amplifying elements as well as minimizing thermal loss thereof.