| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-precision current detection apparatus which does not require time and effort to manufacture and a watt-hour meter using it. <P>SOLUTION: Around a primary conductor 110 for generating a magnetic field which is in direct proportion to a measured current, the current detection apparatus is provided with a plurality of coils 120, 130 for detecting a magnetic field generated by the primary conductor 110 and supports 140, 150 which support the plurality of coils 120, 130, are connected to the plurality of coils 120, 130 magnetically in series, and are made of a magnetic substance, thereby detecting the magnetic field generated by the primary conductor 110 circumferentially. <P>COPYRIGHT: (C)2011,JPO&INPIT |
