Title:
CURRENT SENSOR
Document Type and Number:
Japanese Patent JP2015210251
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a current sensor that allows a relatively simple configuration to detect a current.SOLUTION: A current sensor 1 is configured to cause a current flowing to a busbar 9 to generate a magnetic field inside a feedback core 3; detect a magnetic flux in this instance by a magnetic field sensor 6; supply a current corresponding to a detection result by the magnetic filed sensor 6 to a feedback coil 4; and detect the current flowing to the busbar 9 by a current value supplied to the feedback coil 4 at a point of time when cancelling out the generated magnetic filed by the current flowing to the busbar 9. The feedback coil 4 is configured to be wound around a bobbin body part 51 of a feedback coil bobbin 5, and inside the bobbin body part 51, one part of the feedback core 3, the magnetic field sensor 6, a first shield member 66 and second shield member 67 are retained.
Inventors:
KOSHIMIZU TAKESHI
YOKOUCHI TAKESHI
ARIGA EIKICHI
YOKOUCHI TAKESHI
ARIGA EIKICHI
Application Number:
JP2014094125A
Publication Date:
November 24, 2015
Filing Date:
April 30, 2014
Export Citation:
Assignee:
NIDEC SANKYO CORP
International Classes:
G01R15/20
Attorney, Agent or Firm:
Shiro Yokozawa
Shin Kodaira
Toru Kawai
Kawaguchi Nobuko
Shin Kodaira
Toru Kawai
Kawaguchi Nobuko