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:
Sep. 19, 1989
Filed:
Feb. 29, 1988
Applicant:
Inventor:
Helmut Lowel, Nurnberg, DE;
Assignee:
Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01B / ; H01L / ; H03K / ;
U.S. Cl.
CPC ...
324225 ; 324208 ; 324252 ; 307309 ; 338 / ;
Abstract
A circuit for deriving a temperature-independent square-wave signal from a measurement signal which consists of a DC component and an AC component and which is taken across a magneto-resistor exposed to an alternating magnetic field. The circuit has a controllable impedance, a timing section with a relatively long time constant, and operational amplifiers with FET inputs.