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. 15, 1980
Filed:
May. 25, 1978
Applicant:
Inventors:
Karl Beinitz, Cologne, DE;
Volker Kaltenbach, Bensberg, DE;
Assignee:
Leybold-Heraeus GmbH & Co. Kommanditgesellschaft, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; G01R / ;
U.S. Cl.
CPC ...
328143 ; 3241 / ; 330110 ; 330148 ;
Abstract
A measuring amplifier device is provided with an input circuit producing different functions of an input signal in order to permit output signals in different measuring ranges to be produced. The circuit can be constituted by an operational amplifier having a feedback connection composed of a series arrangement of several elements each defining a particular measuring range together with subtraction stages forming signals corresponding to each range, or by a plurality of diodes or diode-resistor networks connected to divide the input signal between them and each defining a different measuring scale.