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.

Date of Patent:
Jun. 02, 2020

Filed:

Jun. 28, 2018
Applicant:

Hioki Denki Kabushiki Kaisha, Nagano, JP;

Inventors:

Kazunobu Hayashi, Nagano, JP;

Kenichi Seki, Nagano, JP;

Hajime Yoda, Nagano, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 15/18 (2006.01);
U.S. Cl.
CPC ...
G01R 15/186 (2013.01);
Abstract

A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A j(where j is 1 to n) first unit winding from the first end and a jsecond unit winding from the second end are not adjacent and are formed with an equal number of turns.


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