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. 27, 1992
Filed:
Feb. 26, 1992
Takeshi Ito, Kawasaki, JP;
Kikusui Electronics Corporation, Kanagawa, JP;
Abstract
A negative feedback amplifier including, in an input stage, a common-emitter first transistor and a common-base second transistor for supplying a quiescent collector current (standing current) to the first transistor so that a sufficient standing current flows. A negative feedback circuit is connected between an output terminal of an output stage and the emitter of the second transistor, and a first limiter diode is parallely connected to the feedback circuit so as to prevent saturation of an NPN transistor of the output stage. The common-base transistor in the input stage makes it possible to select a high resistance resistor as a feedback resistor, thus enabling the standing current of the output stage to be reduced. A second limiter diode may be connected between the output terminal and the input terminal of the output stage.