Patent ID: 7898363

Claim:
An electric element disposed between a power source and an electrical load circuit operating with an electric current from said power source, comprising: a first conductor through which a first current flows from the power source side to the electrical load circuit side; and a second conductor through which a second current flows from the electrical load circuit side to the power source side; said second current being a return current of said first current, wherein said first conductor comprises n-number (n is a positive integer) of first conductive layers, each in the form of a flat plate, said second conductor comprises m-number (m is a positive integer) of second conductive layers, each in the form of a flat plate, opposed to said first conductive layer, said n-number of first conductive layers and said m-number of second conductive layers are alternately stacked, no conductive layer exists on an overlap area between the adjoining first conductive layer and the second conductive layer, said first current flows in the opposite direction to said second current and does not flow in the same direction as said second current, said second current flows from one end side of said second conductive layer to the other end side opposing to the one end side on the whole of a region, which corresponds to said overlap area, of said second conductive layer, and said first conductor has a smaller inductance than its self-inductance when said first and second currents pass through said first and second conductors, respectively.