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:
Nov. 09, 1993
Filed:
Jul. 17, 1992
Anton Vorel, Eggenfelden, DE;
Abstract
A voltage follower circuit comprising an input (10) for applying an input voltage and an output (20) for emitting an output voltage dependent on the input voltage includes a first current mirror circuit (Q1, Q3) having an input transistor (Q1) and an output transistor (Q3), the current flowing through the input transistor (Q1) depending on the input voltage and the output voltage being generated in dependence upon the current through the output transistor (Q3). Associated with the output transistor (Q3) of the first current mirror circuit (Q1, Q3) is a further input transistor (Q4) which with said output transistor (Q3) forms a second current mirror circuit (Q3, Q4). In the collector line of the further input transistor (Q4) a constant current source (K2) is disposed which impresses a constant current onto the second current mirror circuit (Q4, Q3).