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. 07, 2023
Filed:
Apr. 08, 2021
Bender Gmbh & Co. KG, Gruenberg, DE;
Pascal Becker, Gruenberg, DE;
Bender GmbH & Co. KG, Gruenberg, DE;
Abstract
An electric circuit arrangement and a measuring method for a galvanically insulated, AC/DC sensitive differential current measurement having a high resolution having: a toroid current transformer having at least one secondary winding for detecting a differential current; a driver circuit for powering the secondary winding; a first oscillator circuit for controlling the driver circuit and for generating a time-modulated binary oscillator signal having dwell times in a state 1 and a state 2; a second oscillator circuit for determining the corresponding dwell time in the states 1 and 2 in high resolution by means of a clock signal having a clock rate independent of the oscillator signal; an evaluation device for evaluating the dwell time; and a data interface for outputting a differential-current measuring value; the driver circuit and the second oscillator circuit each being realized as structurally individual, integrated circuits.