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:
Jul. 15, 2008
Filed:
Oct. 30, 2006
Applicant:
Norbert Preusse, Alzenau, DE;
Inventor:
Norbert Preusse, Alzenau, DE;
Assignee:
Vacuumschmelze GmbH & Co. KG, Hanua, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A current sensor comprises a magnetic module, whereby a primary conductor, a compensating winding and a magnetic field probe are magnetically coupled to each other. The primary conductor carries a current to be measured, with a driving circuit, for producing a triangular current, injected into the compensating winding. An evaluation circuit switches the output signal thereof from a first to a second output level and vice versa by a zero crossing of a signal, provided by the magnetic field probe, whereby the output signal is pulse-width modulated, depending on the intensity of the current to be measured.