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. 26, 1994
Filed:
Nov. 12, 1992
Jean-Charles Grasset, Fontaine, FR;
Thomson Composants Militaires et Spatiaux, Courbevoie, FR;
Abstract
The disclosure relates to current mirrors in which a high level of copying error may arise out of the collapse of the gain of the transistors. The mirror includes, in its output arm, a 'Darlington' type amplifier subjected to feedback by a buffered mirror. The error gets cancelled for a gain .beta.=1. A second Darlington amplifier mounted symmetrically with the first Darlington enables the V.sub.CE values of the transistors to be balanced. The disclosed device can be applied to current mirrors when the transistors are low-gain transistors (.perspectiveto.1).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile