| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor capable of accurately measuring current with a same configuration at all times and having the degree of freedom for the installation position of a current wire to be measured. <P>SOLUTION: An MI element 3 is covered by a current sensor substrate 10. When the current sensor is installed so that a current wire 50 to be measured is passed through a through hole 15 in the current sensor substrate 10, a current flowing through the current wire 50 to be measured can be measured with an induced voltage detected by a detection circuit 7 to accurately measure the current with the same configuration at all times. Since a detection coil 5 is formed of a coil pattern in which an inductive through hole 17 formed in the current sensor substrate 10 to an inductive pattern 18, the detection coil 5 can be manufactured by using a semiconductor process technology. Accordingly, the detection coil 5 completely symmetrical with respect to the axal direction of the MI element 3 is easily manufactured and, therefore, the current sensor having high measurement accuracy and a uniform measurement accuracy can be manufactured. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
