| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor which enables a reduction of manufacturing cost. <P>SOLUTION: The current sensor includes an air-core coil 2a (first air-core coil) which is formed by providing winding 6a (conductor) clockwise around a rod-like cable 5a (first winding core) from one end part P1 toward the other end part P2 in the cable 5a, and an air-core coil 2b (second air-core coil) which is formed by providing winding 6b (conductor) counterclockwise around a rod-like cable 5b (second winding core) from one end part P1 toward the other end part P2 in the cable 5b. In a state where the air-core coils 2a and 2b are arranged in parallel, the shapes of the cables 5a and 5b are changed to be annular so that the respective one end parts P1 of the cables 5a and 5b come close to the respective other end parts P2 of the cables 5a and 5b so as to form a double ring, while the two windings 6a and 6b are connected to each other in either of the one end parts P1 and the other end parts P2 of the cables 5a and 5b. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
