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:
Aug. 25, 1981
Filed:
Aug. 14, 1979
Arthur J Leidich, Raritan Township, Somerset County, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
An electrically adjustable current divider means divides the output current of a constant current generator into a plurality of portions, a first of which is applied as tail current to a long-tailed-pair amplifier connection of transistors for controlling its voltage gain. At least one of the long-tailed-pair transistors has a resistive load; the quiescent value of the output voltage developed across this load has an undesirable tendency to exhibit shifts as gain is controlled. A second portion of divided output current from the constant current generator, exhibiting changes in magnitude complementary to those exhibited by the first portion, is applied to current-to-voltage converter means for developing voltage components to counteract the above-mentioned tendency towards shifts in the quiescent value of the output voltage as gain is controlled.