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. 21, 1992
Filed:
May. 15, 1990
Applicant:
Inventors:
Edoardo Botti, Vigevano, IT;
Fabrizio Stefani, Cardano Al Campo, IT;
Assignee:
SGS-Thomson Microelectronics S.r.l., Agrate Brianza, IT;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
361103 ; 361 91 ; 361 98 ; 3302 / ;
Abstract
A circuit for limiting temperature without distortion in audio power amplifiers, comprising a temperature sensor for sensing the temperature in an audio power amplifier, and a variable-gain amplifier connected ahead of the audio power amplifier circuit and having a gain control input connected to the temperature sensor to vary the input signal of the audio amplifier in a linear manner. A linear limitation of the power, and therefore of the temperature, is thus obtained in the audio amplifier without introducing distortion.