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. 21, 2025
Filed:
Dec. 12, 2022
Socomec, Benfeld, FR;
Christian Kern, Kaysersberg Vignoble, FR;
SOCOMEC, Benfeld, FR;
Abstract
A magnetic field sensor for measuring a direct current includes a transducer formed of coils with superparamagnetic core in series; an excitation module generating an excitation current at an excitation frequency, via a midpoint coil, an excitation voltage generator and an excitation impedance. An analysis module includes an analysis impedance coupled to the midpoint coil, and an analyzer that analyzes the current passing through the analysis impedance to extract a component at an analysis frequency equal to an even multiple of the excitation frequency. The excitation impedance forms with the superparamagnetic coils a first series RLC circuit with a resonance frequency, which is substantially equal to the excitation frequency, and a second series RLC-type circuit with an analysis resonance frequency, which is substantially equal to the analysis frequency.