A filter device for rendering viruses harmless has at least one planar air permeable carrier member configured as a face mask. Electrical conductors are applied to the planar carrier member between which an electrical potential is applied, with the electrical conductors being spaced apart by 1 ?m to 100 ?m.

A cable for propagating high frequency signals comprises a first insulated hollow conductor and a second insulated hollow conductor in a braided arrangement to form the cable. The braided arrangement distributes the first and second hollow conductors such that the cable is equalized.

A rectangular cross-section multi-core insulated wire includes an assembly of wires in which insulating layers are formed on peripheries of conductors, and the assembly of the wires is a composite twisted structure, and includes first twisted wires formed by twisting the wires, second twisted wires formed by twisting the first twisted wires, and third twisted wires formed by twisting the second twisted wires. An insulating fiber thread is wound around a periphery, a cross-section is formed in a rectangular shape, and a winding direction of the fiber thread is a direction opposite to a twisting direction of outermost twisted wires in the assembly of the wires.

A power cable having a central ground conductor. Phase interweave power conductors are positioned about the central ground conductor. Individual phase interweave power conductors have the same diameter. The individual phase interweave power conductors have a cross sectional area which is optimized. Each of the individual phase interweave power conductors is configured to support 100% cross sectional usage to maximize power carrying capability. The power cable reduces the skin effect of the power cable and the proximity effect of the power cable.

Multistranded conductors adapted to in vivo environments and methods of making same are disclosed, wherein specific configurations, sequences and directions of wire wraps provide implantable multistranded coils with increased cycle life in in vivo environments as well as desirable electrical performance characteristics.

An electric wire for improving the adhesion force between the adjacent winding wires of a coil is described. The electric wire of the present invention may include a conductive wire with a substantially quadrilateral cross-sectional shape. The electric wire further includes a first groove and a second groove positioned diagonally at two opposite corners of the quadrilateral along a longitudinal direction of the conductive wire. An adhesive pocket filled with an adhesive is sized to fit within each of the first and second grooves at diagonally arranged opposite corners.

An assembled wire, having: an assembled conductor composed of a plurality of conductor strands each having a rectangular cross-section, stacked and arranged each other across an interlayer insulating layer; an insulating outer layer that coats the assembled conductor including the interlayer insulating layer; and an adhesion layer composed of a thermoplastic resin having a thickness of 3 m or more and 10 m or less between the assembled conductor and the insulating outer layer.

A cable having low values for resistance, inductance, and capacitance. The cable includes a plurality of conductors for each signal or leg, which may be configured as a braid of three subsets of braids of bonded pairs of insulated conductors. The bonded pairs may be twisted or untwisted, in close proximity such that inductance is reduced via magnetic field cancellation. Each leg may be separate and parallel, rather than interwoven or braided together, increasing the distance between the two signals and reducing capacitance. The legs may be positioned close to each other, such that their magnetic fields cancel to further reduce inductance.

The invention relates to a method for producing a stranded inner conductor (1), and to a coaxial cable (9). In a first step, a stranded inner conductor (2) is provided, which consists of several wires (3) twisted together. Then the stranded inner conductor (1) is rotary swaged by means of a rotary swaging device (10). In a further step, the rotary swaged stranded inner conductor (3) is enclosed with a dielectric (4). In a further step, the dielectric (4) is enclosed with an outer conductor (5) and a cable sheath (6).

Induction heating extension cables including control conductors are disclosed. An example cable assembly includes: a first plurality of conductors in a Litz cable arrangement; an outer protective layer configured to protect the plurality of conductors from physical damage; and a second plurality of conductors that are electrically isolated from the first plurality of conductors and are protected by the outer protective layer from physical damage.