| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain the desired ampere-turns even when it is difficult to wind a primary side wire on a magnetic circuit by winding at least two turns around the primary side wire with the magnetic circuit so that the magnetic circuit forms a closed circuit. SOLUTION: At least two turns of magnetic circuit 2 (core) are mechanically wound around a primary side straight wire 1 while forming a closed circuit. A secondary side wire 3 is wound around a part of the magnetic circuit 2. When the current i flows in the primary side wire 1, its ampere-turns are 2i. A component to obtain the output signal on the secondary side includes not only the wire 3, but also a magnetic sensor such as a Hall element, an MR element, and a thin film flux gate. The specified ampere-turns can be obtained when the structure to wind the primary wire 1 is wound around the magnetic circuit is difficult to realize due to the reason in assembly.</p> |
