Patent ID: 6252389
Filing Date: 2001-06-26
Classification: G01R

Abstract:
A current detector comprising:a Hall-effect sensor for detecting a magnetic field generated by a current flowing across a conductor;a magnetic core for concentrating a magnetic flux created by the magnetic field and having a first end face and a second end face opposite said first end face, said second end face having a smaller area than said first end face, only said second end face being disposed at a position in close proximity to or in abutment against a magnetic field detecting surface of said Hall-effect sensor; anda signal processing circuit for processing an output signal from said Hall-effect sensor into a signal representing the current flowing across said conductor; andwherein said magnetic core is a flat plate-shaped magnetic core whose longitudinal direction is set in an energizing direction of said conductor, whose sectional area changes toward a position of the magnetic field detecting surface of said Hall-effect sensor, and which is arranged along a configuration of a surface of said conductor so as to be disposed in close proximity to or in abutment against said conductor.