A communication cable that includes a communication line that includes a pair of insulated wires that each include a conductor that has a cross-sectional area of less than 0.22 mm.sup.2 and an insulating covering that covers an outer periphery of the conductor, wherein the communication cable has a characteristic impedance in a range of 10010, and a difference in capacitance between the insulated wires forming the communication line is 25 pF/m or less.

A communication cable that includes a communication line that includes a pair of insulated wires that each include a conductor that has a cross-sectional area of less than 0.22 mm.sup.2 and an insulating covering that covers an outer periphery of the conductor, wherein the communication cable has a characteristic impedance in a range of 10010, and a difference in capacitance between the insulated wires forming the communication line is 25 pF/m or less.

A communication cable that has a reduced diameter while ensuring a required magnitude of characteristic impedance. The shielded communication cable contains a twisted pair containing a pair of insulated wires twisted with each other. Each of the insulated wire contains a conductor that has a tensile strength of 400 MPa or higher, and an insulation coating that covers the conductor. The shielded communication cable 1 further contains a shield that is made of a conductive material and surrounds the twisted pair. The shielded communication cable has a characteristic impedance of 10010.

A communication cable that has a reduced diameter while ensuring a required magnitude of characteristic impedance. The shielded communication cable contains a twisted pair containing a pair of insulated wires twisted with each other. Each of the insulated wire contains a conductor that has a tensile strength of 400 MPa or higher, and an insulation coating that covers the conductor. The shielded communication cable 1 further contains a shield that is made of a conductive material and surrounds the twisted pair. The shielded communication cable has a characteristic impedance of 10010.

The invention discloses an acousto-optic audio signal cable which includes an audio wire cluster, at least one LED marquee light wire or at least one illuminating line parallel or spiral twining around outside or external wall of the audio wire cluster and an acousto-optic controller. The audio wire cluster and the LED marquee light wires form a cluster which is coated by a transparent insulating layer. A main circuit board of the acousto-optic controller includes a sampling amplifier circuit component, an analog-digital conversion circuit component, a microprocessor and an output driver sequentially connected. The audio wire cluster is connected to the input end of the sampling amplifier circuit component. The LED marquee light wires are connected to the output driver. The acousto-optic audio signal cable is simple in structure, convenient to operate, dynamic, fashionable and capable of synchronously flickering light during tone and rhythm changes of instrumental performances and speeches.

The invention discloses an acousto-optic audio signal cable which includes an audio wire cluster, at least one LED marquee light wire or at least one illuminating line parallel or spiral twining around outside or external wall of the audio wire cluster and an acousto-optic controller. The audio wire cluster and the LED marquee light wires form a cluster which is coated by a transparent insulating layer. A main circuit board of the acousto-optic controller includes a sampling amplifier circuit component, an analog-digital conversion circuit component, a microprocessor and an output driver sequentially connected. The audio wire cluster is connected to the input end of the sampling amplifier circuit component. The LED marquee light wires are connected to the output driver. The acousto-optic audio signal cable is simple in structure, convenient to operate, dynamic, fashionable and capable of synchronously flickering light during tone and rhythm changes of instrumental performances and speeches.

A communication cable that has a reduced diameter while ensuring a required magnitude of characteristic impedance. The shielded communication cable contains a twisted pair containing a pair of insulated wires twisted with each other. Each of the insulated wire contains a conductor that has a tensile strength of 400 MPa or higher, and an insulation coating that covers the conductor. The shielded communication cable 1 further contains a shield that is made of a conductive material and surrounds the twisted pair. The shielded communication cable has a characteristic impedance of 10010.

A communication cable that has a reduced diameter while ensuring a required magnitude of characteristic impedance. The shielded communication cable contains a twisted pair containing a pair of insulated wires twisted with each other. Each of the insulated wire contains a conductor that has a tensile strength of 400 MPa or higher, and an insulation coating that covers the conductor. The shielded communication cable 1 further contains a shield that is made of a conductive material and surrounds the twisted pair. The shielded communication cable has a characteristic impedance of 10010.

A cable suitable for use in a Power over Ethernet application may include four twisted pairs of individually insulated conductors and a jacket formed around the four twisted pairs. Each of the four twisted pairs may include two conductors having a size greater than or equal to a 19 American Wire Gauge conductor. Additionally, the four twisted pairs may be electrically connected to an RJ-45 connector. Further, the cable may have a longitudinal length greater than 100 m.

A cable suitable for use in a Power over Ethernet application may include four twisted pairs of individually insulated conductors and a jacket formed around the four twisted pairs. Each of the four twisted pairs may include two conductors having a size greater than or equal to a 19 American Wire Gauge conductor. Additionally, the four twisted pairs may be electrically connected to an RJ-45 connector. Further, the cable may have a longitudinal length greater than 100 m.