Headphone playback devices can include a cable assembly including a plurality of conductors extending between a first earpiece and a second earpiece. The cable assembly includes a jacket, a power conductor disposed within the jacket and coupled between a power source in the first earpiece and a wireless transceiver in the second earpiece. The cable assembly further includes a microphone conductor at least partially disposed within the jacket and coupled to a microphone in one of the earpieces. A shield is at least partially disposed between the power conductor and the microphone conductor to reduce electromagnetic interference between the two.

The present disclosure relates to an armoured cable (10) for transporting alternate current comprising: at least one core (12), each core comprising an electric conductor (121); at least one metallic screen (126) surrounding the at least one core (12); an armour (16), surrounding the at least one metallic screen, comprising an inner layer (16a) of armour wires and an outer layer (16b) of armour wires, at least part of the armour wires of the inner layer (16a) and at least part of the armour wires of outer layer (16b) comprising a ferromagnetic material; and a separating layer between the inner layer (16a) of armour wires and the outer layer (16b) of armour wires. The separating layer has a thickness of at least 1 mm. The present disclosure also relates to a method for reducing losses in said armoured cable and to a method for improving the performances of said armoured cable.

The unintended retraction of extruded insulation from a conductor causes reliability and safety concerns. A variety of insulation lock mechanisms are designed to prevent the insulation layer of an insulated lead from retracting and exposing uninsulated portions of the conductor. The insulation lock mechanism can be included between the conductor and the insulation layer, or included in a connector used to provide an electrical connection between an internal motor lead and an insulated lead of a motor lead cable. Within the connector, the insulation lock mechanism can be included between the insulation layer and a terminal that electrically connects the motor lead to the insulated lead.

The unintended retraction of extruded insulation from a conductor causes reliability and safety concerns. A variety of insulation lock mechanisms are designed to prevent the insulation layer of an insulated lead from retracting and exposing uninsulated portions of the conductor. The insulation lock mechanism can be included between the conductor and the insulation layer, or included in a connector used to provide an electrical connection between an internal motor lead and an insulated lead of a motor lead cable. Within the connector, the insulation lock mechanism can be included between the insulation layer and a terminal that electrically connects the motor lead to the insulated lead.

A wall bushing for high voltage application is presented. The wall bushing includes a grounded shield. The grounded shield includes a grading ring in a distal end thereof. The grading ring has an elliptic cross section with conjugate diameters, wherein a major diameter of the conjugate diameters is arranged in an axial direction of the grounded shield and a minor diameter of the conjugate diameters is arranged in a radial direction of the grounded shield. The major diameter is larger than the minor diameter.

Headphone playback devices can include a cable assembly including a plurality of conductors extending between a first earpiece and a second earpiece. The cable assembly includes a jacket, a power conductor disposed within the jacket and coupled between a power source in the first earpiece and a wireless transceiver in the second earpiece. The cable assembly further includes a microphone conductor at least partially disposed within the jacket and coupled to a microphone in one of the earpieces. A shield is at least partially disposed between the power conductor and the microphone conductor to reduce electromagnetic interference between the two.

Headphone playback devices can include a cable assembly including a plurality of conductors extending between a first earpiece and a second earpiece. The cable assembly includes a jacket, a power conductor disposed within the jacket and coupled between a power source in the first earpiece and a wireless transceiver in the second earpiece. The cable assembly further includes a microphone conductor at least partially disposed within the jacket and coupled to a microphone in one of the earpieces. A shield is at least partially disposed between the power conductor and the microphone conductor to reduce electromagnetic interference between the two.

The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.

The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.

An electrical cable includes a conductor assembly having a first conductor, a second conductor and an insulator surrounding the first conductor and the second conductor. The insulator has an outer surface and extends along a longitudinal axis for a length of the electrical cable. The conductor assembly has a coating layer on the outer surface of the insulator being conductive defining an inner electrical shield of the electrical cable. A cable shield is wrapped around the conductor assembly and has an inner edge and an outer edge. The outer edge is wrapped over the inner edge to form a flap covering the inner edge and extending along the longitudinal axis. The cable shield engages the inner electrical shield and forms an outer electrical shield exterior of the inner electrical shield.