| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small, simply structured, high-accuracy voltage sensor element for sufficiently shielding from an external magnetic field even if mounting position accuracy is low. <P>SOLUTION: The voltage sensor element 100 includes an annular core 3 made of a magnetic material, and a primary winding 2A and a secondary winding 2B wound around the core 3, outputs an AC voltage to be applied to the primary winding 2A as an output voltage of the secondary winding 2B by electromagnetic induction of a magnetic flux passing through the core 3. A magnetic shielding plate 1 is disposed on either one of the upper main face and the lower main face or both faces of the core 3, except for the side face of the core 3. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
