A cable comprising a conductor in a center of the cable, a dielectric layer surrounding the conductor and a resistive coating may be provided. The resistive coating may be applied to an exposed portion of the conductor and disposed with the dielectric layer. The resistance of the resistive coating when combined with an impedance of the cable prior to application of the resistive coating reaches a target impedance.

A cable comprising a conductor in a center of the cable, a dielectric layer surrounding the conductor and a resistive coating may be provided. The resistive coating may be applied to an exposed portion of the conductor and disposed with the dielectric layer. The resistance of the resistive coating when combined with an impedance of the cable prior to application of the resistive coating reaches a target impedance.

A winding wire having a stranded wire formed by twisting a plurality of element wires whose a copper wire having a wire diameter of 0.05 to 0.5 mm and an extrusion coating layer coating the plurality of the element wires, wherein at least one of the element wires has a magnetic layer on an outer circumference of the copper wire, and the thickness of the extrusion coating layer is 40 to 400 μm;
as well as a coil and a transformer using the winding wire.

A winding wire having a stranded wire formed by twisting a plurality of element wires whose a copper wire having a wire diameter of 0.05 to 0.5 mm and an extrusion coating layer coating the plurality of the element wires, wherein at least one of the element wires has a magnetic layer on an outer circumference of the copper wire, and the thickness of the extrusion coating layer is 40 to 400 μm;
as well as a coil and a transformer using the winding wire.

A noise reduction element includes a protruded portion on which a bent portion of a conductive wire is hooked, and a winder portion around which both a first conductive wire portion extending in one direction from the bent portion of the conductive wire hooked on the protruded portion and a second conductive wire portion extending in another direction from the bent portion of the conductive wire hooked on the protruded portion are wound in a state where the first and second conductive wire portions are parallel to each other.

A noise reduction element includes a protruded portion on which a bent portion of a conductive wire is hooked, and a winder portion around which both a first conductive wire portion extending in one direction from the bent portion of the conductive wire hooked on the protruded portion and a second conductive wire portion extending in another direction from the bent portion of the conductive wire hooked on the protruded portion are wound in a state where the first and second conductive wire portions are parallel to each other.

A capacitive power transmission cable (1) having at least two sets of conductive strands (2) and the strands of the sets are distributed in a transverse cross-section of the cable, whereby the two sets are in capacitive relation to each other, wherein preferably, the capacitance is at least 10 nF/m.

A multiple parallel conductor that is easy to produce and use and has a plurality of twisted, insulated individual conductors. The individual conductors are arranged above one another in a plurality of sub-conductor bundles arranged next to one another. A strip is applied to the multiple parallel conductor on a side surface of the multiple parallel conductor in the longitudinal direction of the multiple parallel conductor, on which strip spacer plates are arranged so as to be distributed in the longitudinal direction, and the multiple parallel conductor together with the strip and the spacer plates is wrapped with a wrapping.

A capacitive power transmission cable (1) comprising at least two sets of conductive strands (2). The strands of the sets are distributed in a transverse cross-section of the cable, whereby the two sets are in capacitive relation to each other.

An insulated wire includes a conductor including a copper material, and an insulation layer that is formed on an outer periphery of the conductor. A restoring temperature T.sub.B of the conductor is not more than 130° C. The restoring temperature T.sub.B is a temperature that is needed to restore a conductivity of the conductor after a coil processing to a conductivity of the conductor before the coil processing.