| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an apparatus and a method for detecting currents and a power supply system using these whereby the current flowing in a conductor can be detected highly accurately and an assembly work is made inexpensive and easy. SOLUTION: There are provided a first conductor 11 arranged on a plane, a second conductor 12 extended from a branching point O formed to one end of the first conductor, and disposed on the plane to have a predetermined angle to the first conductor, a third conductor 13 extended from the branching point O and arranged on the plane to be symmetric with the second conductor with respect to the first conductor as an axis of symmetry, a first Hall element 21 set so that a magnetism sensitive face is present on the plane in the vicinity of the branching point O between the first and the second conductors at a position of an equal distance from the first and the second conductors, a second Hall element 22 set so that a magnetism sensitive face is present on the plane at a position to be symmetric with the first Hall element with respect to the first conductor as an axis of symmetry, and an operation process circuit for obtaining a difference of electrical signals from the first Hall element and the second Hall element and detecting the current flowing in the first conductor on the basis of the obtained result.</p> |
