Current-carrying cable (alternatives) and current-carrying conductor

FIELD: electrical engineering.

SUBSTANCE: proposed current-carrying cable has insulated current-carrying conductors covered with insulating sheath and connected at ends to contact assemblies. Insulating sheath is essentially band with current-carrying conductors connected at its edges to provide for regulating conductor-to-conductor capacitance and spaced minimum 4 cm apart on band section between contact assemblies; mentioned band is made for interconnecting its edges at least on part of its length for driving current-carrying conductors together. Current-carrying conductor used for proposed cable has two insulated wires covered with common insulating sheath. Both wires are stranded over conductor length; stranded wires are essentially equal-length conductors alternately stranded clockwise and counter-clockwise and having equal number of turns and twisted with equal force.

EFFECT: ability of regulating conductor-to-conductor capacitance over perimeter.

4 cl, 12 dwg

 

The invention relates to electrical engineering, in particular for the design of the conductive cable, used in consumer electronics for various interconnect and component connections audio and video.

Known conductive cable containing two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes (Article Kunegina SV "Chapter 3. Coaxial cables", has been posted online at Internet url: http://www.aboutphone.info/kunegin/coax/page3.html).

From the same source known conductor containing two isolated from each conductor located in a common insulating sheath.

The specified well-known decision was made as a prototype for all of the stated objects.

In the known coaxial cable main current transmission is concentrated on the inner surface of the outer conductor, and the current noise is on the outside of the outer conductor. As the primary current and the current noise penetrate into the thickness of the conductor only to a depth determined by the coefficient of eddy currents. Moreover, the higher the frequency, the farther away from each other these currents and, consequently, the better protected the cable from extraneous interference. Thus, in contrast to all other types of cables requiring protection from interference with ecially measures (balancing, shielding and so on), in coaxial cables at high frequencies this is ensured by their very design. In the field of high frequency internal inductance of the conductors is small and the inductance of the coaxial cable is determined only by the external inductance. In the calculations for the use of coaxial cable is assumed that the resistance along the chain R=0, as it does not take into account losses in the conductors of the cable, and external besprovodnoy inductance coaxial cable L=(μ/2π)ln(rb/ra). Accordingly, the conductivity C=2πσ/ln(rb/ra), the capacity C=2πε/ln(rb/ra), where μ, ε, σ - accordingly, magnetic, dielectric permittivity and conductivity of the medium, and rb, ra- the radii of the conductors, certain of the common center of the internally situated Explorer.

From the above it follows that the main advantages of the coaxial cable (low attenuation and high noise immunity) are especially evident in the high-frequency part of the transmitted frequency spectrum. At DC and low frequencies, when the current is practically runs around the conductor section. The advantages of this cable is missing. Moreover, the coaxial circuit as asymmetric with respect to other circuits and earth (the parameters of its conductors "a" and "b" are different) in misconception frequencies for protection against interference inferior balanced cables.

The disadvantage of this cable is that it is good in terms of noise immunity operates in the field of high-frequency part of the transmitted frequency spectrum in the low frequency range for protection against interference inferior balanced cables. At the same time in consumer electronics for various interconnect and component connections audio and video and just used the wires for the transmission of signals in the low frequency range. In this regard, such a cable settings, as besprovodnoy capacity, it is necessary to consider, as modern equipment (audio and videocassette) is based on the use of small currents in the low frequency range, and the transfer of electric charge from one conductor to another affects the purity of passing on the signal lead. Studies have shown, besprovodnoy capacity in the cable reaches 75 pF, which is a substantial obstacle for low power signals and sufficient for producing distortion in the signal.

The present invention is directed to the solution of the technical problem to eliminate the influence of the processes of the current flowing in the conductor of the signal.

Achievable technical result is to improve the operational characteristics of the conductive cable by reducing the impact besprovodnoy capacity (mutual is th consuming two conductors) on the quality and authenticity of the transmitted signal.

The technical result for the first variant is achieved by the conductive cable containing two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes, to provide regulation for the parameter besprovodnoy capacitance insulating sheath is a tape, the edges of which are fixed the conductors located on the tape in the area between the contact nodes at a distance from each other not less than 4 cm, while this tape is made with possibility of connection edges between at least part of its length for convergence conductive wires.

The technical result for the second variant is achieved by the conductive cable containing two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes, to provide regulation for the parameter besprovodnoy capacity of the conductors spaced from each other in the area between the contact nodes are interconnected along the length of the lock of type ' zip ' to remove these lived from each other when rasstegivanie last.

The technical result is also achieved by the fact that in the conductive strand containing two isolated who's apart of the conductor, located in common isolated shell specified in the shell both conductor made of twisted along the length of the conductors, while the twisting is an alternating equal length sections twisting clockwise and lots of twisting counterclockwise, with an equal number of turns in each winding.

These characteristics are essential and interrelated with the formation of a stable set of essential features, sufficient to obtain the desired technical result.

The present invention is illustrated with specific examples of implementation, which, however, are not only possible, but clearly demonstrate the possibility of achieving the desired technical result.

Figure 1 - General view of the cable according to the first embodiment;

figure 2 - type cable cross-section of figure 1 after connecting the edges of the ribbon;

figure 3 - General view of the cable according to the second embodiment;

figure 4 - example of implementation of the cable;

5 is a diagram of the twisting of the conductors in the cable;

6 is an image of the relative position of the conductors in the conductive wire by twisting;

Fig.7 is a cross - section of the conductors in Fig.6;

Fig - section of a conductor in conductive strand in Fig.6;

Fig.9 is a graph showing the change of the amplitude of the audio signal from the frequency in the audible spectrum is frequency, cable with besprovodnoy capacitance 5 pF;

figure 10 is a graph of the dependence of the amplitude of the audio signal from the frequency in the spectrum of audible frequencies for cable with besprovodnoy capacitance 8 pF;

11 is a graph of the dependence of the amplitude of the audio signal from the frequency in the spectrum of audible frequencies for cable with besprovodnoy capacitance 12 pF;

Fig is a graph of the dependence of the amplitude of the audio signal from the frequency in the spectrum of audible frequencies for cable with besprovodnoy capacity of 16 pF.

According to the present invention the construction of the current-carrying cable, designed for use in consumer electronics for various interconnect and component connections audio and video. More specifically, this cable is used to connect the blocks acoustic or video, which are increased requirements to the quality of the transmitted signal. In the framework of the present invention is considered a current-carrying cable with reduced besprovodnoy capacity, which significantly improves the reliability of the signal transmitted from one system component to another.

Traditionally produced by current-carrying cables, regardless of design and materials used are besprovodnoy capacity, equal to about 75 pF. As a result, the biolofy research center the x works installed, when the conductive wires passing from each other at a distance of not less than 4 cm significantly reduced besprovodnoy capacitance of the cable up to 5 pF. The restriction on the lower limit is due to the fact that posted the conductors at their converging ends for connection with the contact nodes.

According to the first embodiment of the conductive cable (figure 1) contains two insulated from each other, the conductors 1, placed in an insulating sheath 2, and the ends of which are attached to the contact nodes (not shown). To ensure control parameter besprovodnoy capacitance insulating sheath is a tape 3, the edges of which are fixed the conductors located on the tape in the area between the contact nodes at a distance from each other not less than 4 cm, while this tape is made with possibility of connection edges between at least part of its length for convergence conductive wires (figure 2). At the end sections of the tape is performed with the neck 4 between the electric conductors to allow convergence of the free ends of the conductive wires and their connections with the contact node. The ability to connect the edges of the ribbon between them (as shown in figure 2) on at least part of its length for convergence conductive wires provided is highlighted by the fact that the edges of the tape are as elements of the lock Zip-Lock 5, widely used for packaging of plastic bags or zipper or slide fastener. Thus, to change the characteristics of the cable on the parameter besprovodnoy capacitance must be connected between the tape edge and the movement of zipper to achieve the desired setting.

On Fig.9-12 shows graphs of the variation of the amplitude of the audio signal from the frequency in the spectrum of audible frequencies for the cable. Thus by varying the length of United parcel tape got graphics for cables with besprovodnoy capacitance 5 pF, 8 pF, 12 pF and 16 pF. As can be seen from the graphs, with the increase besprovodnoy capacity of the useful signal becomes highly distorted.

According to the second embodiment of the conductive cable (figure 3) as well as in the first embodiment, contains two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes. However, to ensure control parameter besprovodnoy capacity of the conductors spaced from each other in the area between the contact nodes are interconnected along the length of the lock 6 of type ' zip ' to remove these lived apart at undoing the last. This conductive cable maintains the of the parameter besprovodnoy capacity is breeding initially contiguous conductive wires.

For these variants conductive conductor cable is used from two isolated from each other by wires 7 are located in a common insulating sheath. Each conductor is made of a conductive wire (core)coated with an insulating lacquer coating 8 is covered by the insulating fabric cover 9. However, in this shell the two wires made of twisted along the length of the conductors (figure 5. 6), while the twisting is an alternating equal length sections twisting clockwise and lots of twisting counterclockwise, with an equal number of turns in each winding. Each of the twisted conductors twisted with the same twisting force. These parameters are the conductors are an essential and decisive for the process of charge transfer from one conductor to another. Thus lived is a consistently spaced alternating sections, one of which conductors are twisted in one direction, and in the next part of these conductors are twisted in the opposite direction to form between the areas of the zone 10 "reverse" (6).

When this version is cancel each other out educated on the same plot twisting besprovodnoy capacity with one sign are equal in magnitude, but Britney sign capacity, educated at the next section.

The invention makes it possible to design radios subject to the minimum index pF: not more than 25 pF when passing an audio or video signal on a conductor having a minimum pF - besprovodnoy capacity with parallel negative conductor. The invention allows to construct audio(video)scheme, with a minimum of parasitic capacitance, thereby obtaining the ideal indicators in the audio(video)tract, not only in the voices of the HF - MF - LF-range frequency response (amplitude-frequency characteristic), but in the colours and tonal balance. The higher the audio signal on the conductor depends not only on the parameters of resistance, as previously thought (this option has minimal impact on the character of the sound signal), and inductance (this setting affects the LF range is not the main component in the audible range and is easily solved by using reversed conductor) and, as it turned out, the most important electrical parameter affecting the audible output of the sound signal that is perceived by the human ear in the range from 800 Hz to 16500 kHz (up to 16500 increases the visual perception of the ear when the decrease rate besprovodnoy capacity)is the indicator in pF besprovodnoy capacity m is waiting for the plus and minus of the transmitting signal(s) of the conductor. Between the two parallel conductive and cores positive (+) and negative (-), the indicators values besprovodnoy capacity in the figures pF is so minimal that one unit in pF capacitance (unit capacity) between the conductors has a serious impact on the end result of an audio or video signal. Indicators of capacity in increments of 1 pF have a huge difference not only in real audible range of the human ear and a real sight visually, but also clearly reflected in the measurement of sound frequency response graphs and test videosecu. The lower the figure besprovodnoy capacitance in pF, the clearer the audio or video signals. According to numerous experiments, measurements, practice has shown that 100% of the world production of conductive interconnect cables have rates from 50 to 300 pF besprovodnoy capacity per one running meter length. Due to the minimum number besprovodnoy capacity with the difference of 1 pF/meter running, and actually a huge step metrics (in this case, tens of pF pass audio or video signals) people - the listeners, music lovers and audiophiles can hear a clear difference in sound audio in the comparison of different connecting cables (interconnects and speaker), and distinguish the difference in quality is STV video on the same monitor, connected by various cables.

The present invention is industrially applicable, as may be implemented using technologies used in the manufacture of cables in the electrical industry.

1. Conductive cable containing two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes, characterized in that in order to ensure control parameter besprovodnoy capacity, insulating sheath is a tape, the edges of which are fixed the conductors located on the tape in the area between the contact nodes at a distance from each other not less than 4 cm, while this tape is made with possibility of connection edges between at least part of its length for convergence conductive wires.

2. Conductive cable containing two insulated from each other, the conductors placed in an insulating sheath, and the ends of which are attached to the contact nodes, characterized in that in order to ensure control parameter besprovodnoy capacity, the conductors spaced from each other in the area between the contact nodes are interconnected along the length of the lock of type ' zip ' to remove these lived apart from the Ruga at undoing the last.

3. Conductor containing two isolated from each conductor located in a common insulating sheath, characterized in that the specified shell two wires made of twisted along the length of the conductors, while the twisting is an alternating equal length sections twisting clockwise and lots of twisting counterclockwise, with an equal number of turns in each winding.

4. Lived according to claim 3, characterized in that each of the twisted conductors twisted with the same twisting force.



 

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