A device is provided with a PWM signal generating circuit, a gate driver and a transmission line connecting them. The transmission line transmits a PWM signal output from the PWM generator as an input signal for the gate driver. A noise suppression member is provided to at least a part of a periphery of the transmission line. The noise suppression member has a structure that magnetic powder is dispersed in a binder and has an imaginary part of a complex magnetic permeability that is greater than or equal to 5 and smaller than or equal to 30 in a range of 500 MHz to 3 GHz. The noise suppression member has a thickness t greater than or equal to 20 m. The noise suppression member is disposed apart from a conducting wire of the transmission line by a distance greater than 0.05 mm or smaller than or equal to 5 mm.

A cable may include a plurality of twisted pairs of individually insulated conductors, a separator positioned between the twisted pairs, and a jacket formed around the twisted pairs and the separator. The separator may include a longitudinally extending spine positioned between the plurality of twisted pairs, and at least one prong respectively extending from the spine at each of a plurality of longitudinally spaced locations. Additionally, for each pair of adjacent longitudinally spaced locations, the at least one prong extending at a first of the pair of locations may extend in a first set of one or more directions and the at least one prong extending at a second of the pair of locations may extend in a second set of one or more directions that is different than the first set of one or more directions.

A cable may include a plurality of twisted pairs of individually insulated conductors, a separator positioned between the twisted pairs, and a jacket formed around the twisted pairs and the separator. The separator may include a longitudinally extending spine positioned between the plurality of twisted pairs, and at least one prong respectively extending from the spine at each of a plurality of longitudinally spaced locations. Additionally, for each pair of adjacent longitudinally spaced locations, the at least one prong extending at a first of the pair of locations may extend in a first set of one or more directions and the at least one prong extending at a second of the pair of locations may extend in a second set of one or more directions that is different than the first set of one or more directions.

Aspects of the subject disclosure may include, for example, a transmission medium for propagating electromagnetic waves. The transmission medium can include a core for propagating electromagnetic waves guided by the core without an electrical return path, a rigid material surrounding the core, wherein an inner surface of the rigid material is separated from an outer surface of the core, and a conductive layer disposed on the rigid material. Other embodiments are disclosed.

A cable separator comprising a preshaped article having a longitudinal length, wherein said preshaped article is substantially entirely formed of a foamed polymer material having a glass transition temperature greater than 160 C. and being halogen-free is provided. A data communications cable comprising a plurality of conductors and the cable separator of the present invention, wherein said cable separator separates the plurality of conductors is provided. A method of manufacturing a cable comprising the separator of the invention is also provided.

To provide a LAN cable. A LAN cable includes an insulated electrical wire having an insulating layer on an outer periphery of a conductor, a sheath that coats an outer periphery of the insulated electrical wire, and an intermediate layer arranged between the sheath and the insulated electrical wire, the intermediate layer having a mass reduction rate at 800? C. of less than or equal to 80% by mass. The sheath includes a cross-linked matter or a non-halogen flame retardant resin composition in which a mass reduction rate at 800? C. is less than or equal to 60% by mass.

The present disclosure relates to a composite cable, which comprises a first wire assembly and a second wire assembly, and each wire of the second wire assembly is surrounded by an insulating layer. The composite cable further comprises: a sheath made of insulating material and configured to enclose the first wire assembly and the second wire assembly; and a shield comprising different kinds of metal wires and configured to surround the first wire assembly, wherein the first wire assembly is capable of transmitting signals, and the second wire assembly is capable of transmitting power supply. The composite cable according to the present disclosure is excellent in shielding performance for different requirements.

A shield tape is provided in a hybrid cable. The shield tape includes one pair of differential wirings and a shield tape. The shield tape surrounds the one pair of differential wirings. The shield tape includes a substrate layer and a shield layer. The substrate layer has insulating properties. The shield layer is disposed at the opposite side of the one pair of differential wirings with respect to the substrate layer.

A shield tape is provided in a hybrid cable. The shield tape includes one pair of differential wirings and a shield tape. The shield tape surrounds the one pair of differential wirings. The shield tape includes a substrate layer and a shield layer. The substrate layer has insulating properties. The shield layer is disposed at the opposite side of the one pair of differential wirings with respect to the substrate layer.

A cable includes a transmission cord having two connecting terminals formed on two opposite ends thereof, two connectors respectively mounted on the two connecting terminals of the transmission cord, two end caps mounted on the transmission cord and respectively connected with the two connectors, and at least one demagnetizing layer mounted on the two connectors and received in the two end caps. The transmission cord includes a conducting wire, an insulating layer wrapped around the conducting wire to insulate the conducting wire, and a protective layer wrapped around an outer face of the transmission cord. The at least one demagnetizing layer is made of graphene to prevent the electromagnetic waves of the ambient environment from interfering with the signal transmission of the transmission cord.