| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor for miniaturizing the whole sensor, reducing the cost, and simplifying the sensor mounting. <P>SOLUTION: This current sensor includes an annular magnetic core 3 that includes a closed magnetic path 3a including a void 30a in a portion thereof, and a magnetic body for focusing fluxΦ<SB>1</SB>of a magnetic field generated around a conductor 2 that carries a measured current A, and a magnetic detecting portion 4 for detecting fluxΦ<SB>2</SB>of a magnetic field generated in the void 30a of the magnetic core 3. The magnetic core 3 includes a plurality of pairs of stepped portions 5a-5c and 6a-6c on a pair of end surfaces 5 and 6 that form the void 30a, the stepped portions descending along a direction separating from the conductor 2. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
