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Title:
MAGNETIC BALANCE TYPE CURRENT SENSOR
Document Type and Number:
Japanese Patent JP2010071960
Kind Code:
A
Abstract:

To provide a compact magnetic balance type current sensor requiring only the small number of turns of coils even when a current value of a line to be measured is high.

This magnetic balance type current sensor is equipped with two closed magnetic circuits P1, P2 wherein a magnetic flux is formed by a current I conducting in the line 11 to be measured; a coil 3 arranged on one of the two closed magnetic circuits P1, P2 in order to negate a magnetic flux 1 in the closed magnetic circuit P1; and a Hall element 2 arranged on the closed magnetic circuit on which the coil 3 is arranged, for detecting the magnetic flux.


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Inventors:
Miyazaki, Hiroyuki
Application Number:
JP2008000243186
Publication Date:
April 02, 2010
Filing Date:
September 22, 2008
Export Citation:
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Assignee:
SUMIDA CORPORATION
International Classes:
G01R15/20
Domestic Patent References:
JPH04155266A
JPH11258275A
Attorney, Agent or Firm:
青木 修