| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor which is one of current sensors for detecting current flowing a conductive line in accordance with a magnetic field generated around the conductive line, and can reduce measurement errors due to external magnetic fields. <P>SOLUTION: The current sensor for detecting the current flowing the conductive line in accordance with the magnetic field generated around the conductive line, includes: a magnetic body for forming a magnetic path around the conductive line; a first field detecting means which is inserted into the magnetic path formed by the magnetic body and outputs a signal corresponding to magnetic fluxes flowing the magnetic path; a second field detecting means which is inserted into the magnetic path in parallel with the first field detecting means so as to sandwich the conductive line, and outputs a signal corresponding to the magnetic fluxes flowing the magnetic path; and a subtracting means which subtracts an output of the second field detecting means from an output of the first field detecting means. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
