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:
Mar. 29, 1977
Filed:
Oct. 28, 1975
Applicant:
Inventor:
Toshihiko Miyata, Tokyo, JA;
Assignee:
Sony Corporation, Tokyo, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 13 ; 330 15 ; 330 22 ; 330 24 ; 330 35 ;
Abstract
An amplifier having at least a drive stage and an output stage, the output stage comprised of an FET for applying an amplified signal to a load. The drive stage includes a transistor device whose output is direct coupled to the gate electrode of the FET, the transistor device being supplied with an input signal to be amplified. A constant current source is coupled to the output of the transistor device, and thus to the gate electrode of the FET, and provides a current of predetermined magnitude to thus limit the gate leakage current during periods that the FET is cut off.