| 摘要 |
PURPOSE: To resolve problems that the mounting cost becomes great by the conventional method where a current detector using Hall elements is arranged for each detection system and that duplication is generated. CONSTITUTION: A plurality of Hall elements 10 is mounted on a substrate 11 together with a detection circuit including an amplifier, and input/output terminals 12 for a power supply common to every detection circuits and outputting thereof are mounted thereon. Coils 7 having the same number as the Hall element 10 in cooperation with each other, and E-shaped and I-shaped cores 8 and 9 to be assembled onto the coils 7 are built in one holder 6. |
