| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain an air core coil and the manufacturing method of the same by which measuring sensitivity is improved when used for a current sensor. <P>SOLUTION: An insulation substrate 1 has a core substrate 14 and first and second superposed substrates 15 and 16. The insulation substrate 1 is provided with a basic coil 6 and a superposed coil 7 surrounding the basic coil 6. The superposed coil 7 comprises a front side superposed conductor 22 and a rear side superposed conductor 23 provided on a front surface 2 and a rear surface 3, an inner superposed conductor 24 and an outer superposed conductor 25 extending through the core substrate 14 and the first and second superposed substrates 15 and 16. The inner superposed conductor 24 comprises divided conductor pieces 24a, 24b and 24c, and the outer superposed conductor 25 comprises divided conductor pieces 25a, 25b and 25c. The divided conductor pieces 24a, 24b and 24c, and the divided conductor pieces 25a, 25b and 25c are electrically connected with each other through copper bumps 34. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
