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:
Feb. 17, 2004
Filed:
Feb. 14, 2000
Applicant:
Inventor:
Helmut Brockhaus, Dinslaken, DE;
Assignee:
Krohne Messtechnik GmbH & Co., Duisburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 ; H03F 3/68 ;
U.S. Cl.
CPC ...
H03F 3/45 ; H03F 3/68 ;
Abstract
A signal processing circuit for a differential voltage as the signal to be processed, especially for use in a magnetoinductive flowmeter, incorporating a preamplifier and, connected to the output of the preamplifier, an A/D converter. By employing as the preamplifier a differentially operating preamplifier, the circuit obtains in relatively simple as well as cost-effective fashion at the same time a high level of common-mode signal rejection and a substantial suppression of the low-frequency components in the differential signal occurring below the measuring frequency.