Electrical device

Abstract

The invention relates to electrical devices (1) by means of which electrical signals are transmitted, such as for example a flat conductor cable (2), an integrated semiconductor component, an electrical circuit arrangement or other electrical cable, comprising a magnetic foil or a magnetic strip (4) applied thereto.

Description

[0001] Electrical device

[0002] The invention relates to electrical devices through which electrical signals are transmitted, such as a ribbon cable, an integrated semiconductor component, an electrical circuit arrangement or another electrical cable.

[0003] Today's electronic devices primarily operate with electrical signals—that is, electrical voltages and currents—which are relatively small and therefore susceptible to interference. Nevertheless, high signal transmission quality is important in many areas. For example, in hi-fi equipment, even small external interference signals can generate unwanted noise and interference components in the useful signals. Furthermore, today's electronic circuits also exhibit a significant amount of inherent noise, which can degrade the useful signals.

[0004] The invention is based on the object of providing a simple to produce possibility for reducing signal noise in an electrical device transmitting electrical signals.

[0005] This object is achieved by a device with at least one ribbon cable having one electrical conductor or several electrical conductors arranged next to one another in a width direction of the ribbon cable, insulated from one another and encased in insulating material, and at least one ribbon magnetic strip and / or at least one magnetic foil arranged on at least one flat side of the ribbon cable and extending over at least part of the longitudinal extent of the ribbon cable or the entire length of the ribbon cable.

[0006] The invention is also suitable for other electrical devices or electrical components that transmit electrical signals.

[0007] At least one flat magnetic strip and / or a magnetic foil is used as the magnetic field generator. Such elements can be purchased commercially. The flat magnetic strip and / or the magnetic foil can have individual, adjacently arranged strip-shaped magnets, which are designed as permanent magnets of different polarity and arranged alternately next to one another. The flat magnetic strip or the magnetic foil can have a carrier material in which the individual, adjacently arranged magnets are embedded.

[0008] The magnetic field generator, i.e., the flat ribbon magnetic strip or magnetic foil, can be applied to the outside of the ribbon cable and, for example, glued to it. It is also possible to manufacture the ribbon cable directly with the magnetic field generator in an integrated manufacturing process, with the magnetic field generator then being applied directly to the ribbon cable.

[0009] In a further advantageous variant, the electrical conductor(s) of the ribbon cable can be embedded in a carrier material, in particular a magnetic tape, of the ribbon magnetic strip, and / or the magnetic foil. Here, too, the ribbon magnetic strip and / or the magnetic foil can extend over at least part of the longitudinal extent of the ribbon cable or the entire length of the ribbon cable. In this way, the ribbon cable can be manufactured with the ribbon magnetic strip or the magnetic foil in an integrated manufacturing process, without the need for subsequent application of the ribbon magnetic strip or the magnetic foil.

[0010] According to an advantageous embodiment of the invention, at least one flat ribbon magnetic strip and / or a magnetic foil is arranged on both flat sides of the ribbon cable and extends over at least part of the longitudinal extent of the ribbon cable or the entire length of the ribbon cable. This allows the advantageous shielding effects of the invention to be further improved.

[0011] According to an advantageous embodiment of the invention, the electrical conductor(s) in the ribbon cable are formed from a flat sheet material that has a significantly greater width than thickness. In the width direction of the ribbon cable, the electrical conductor(s) thus have a larger dimension than the thickness direction of the ribbon cable. In particular, the ribbon cable can have only one continuously wide electrical conductor made of flat material. Silver, copper, gold, or an alloy thereof is particularly suitable as the sheet material for the electrical conductor(s).

[0012] According to an advantageous embodiment of the invention, the electrical conductor or conductors are each enclosed by an insulating layer formed by a varnish. For this purpose, for example, a transformer varnish can be used, similar to that used for enamelled copper wire. The varnish insulating layer can be applied to the respective electrical conductor, for example by means of a coating process. The object stated at the outset is also achieved by an integrated semiconductor component with a housing made of plastic or another insulating material, in which a semiconductor circuit is embedded, and a multiplicity of connection pins or connection pads contactable on the outside of the housing, wherein at least one flat magnetic strip and / or at least one magnetic film is arranged on the top side of the housing and extends over part of the top side of the housing or the entire top side of the housing.The flat magnetic strip and / or the magnetic foil can be applied directly to the outer surface of the housing.

[0013] According to an advantageous embodiment of the invention, it is provided that at least one flat magnetic strip and / or a magnetic foil is arranged on the underside of the housing, which extends over part of the underside of the housing or the entire underside of the housing.

[0014] The object mentioned at the outset is also achieved by an electrical circuit arrangement having at least one printed circuit board and electrical and / or electronic components arranged thereon, wherein at least one flat magnetic strip and / or at least one magnetic foil is arranged on the electrical circuit arrangement, which extends over part of the planar extent of the printed circuit board or over the entire planar extent of the printed circuit board.

[0015] According to an advantageous embodiment of the invention, it is provided that at least one flat magnetic strip and / or a magnetic foil is arranged on both sides of the electrical circuit arrangement, which extends over part of the planar extent of the printed circuit board or over the entire planar extent of the printed circuit board.

[0016] The object mentioned above is also achieved by an electrical power strip with a housing, several sockets with electrical contacts and contacts of the sockets with one or more supply lines connecting the connecting lines arranged in the housing, wherein at least one flat magnetic strip and / or at least one magnetic foil is arranged on one, several or all of the connecting lines, which extends over part of the planar extent of the connecting line or over the entire planar extent of the connecting line. In this way, an electrical power strip can also be interference-suppressed or protected from interference. The connecting lines can, for example, be designed as flat conductors, e.g.in the form of strip-shaped sheet metal parts, on which at least one flat magnetic strip and / or at least one magnetic foil is arranged on one or both opposite surfaces. The power strip can be designed, in particular, as a power strip for a commercially available AC power supply, i.e., for the 220 V or 110 V mains.

[0017] According to an advantageous embodiment of the invention, the power strip has one or more sleeve-shaped bodies, each sleeve-shaped body extending in a ring around the electrical contacts of a respective socket. The sleeve-shaped body consists entirely or partially of a permanent magnet, in particular of at least one flat magnetic strip and / or at least one magnetic foil. The sleeve-shaped body can have at least one permanent magnet over its entire circumference and / or over its entire longitudinal extent.

[0018] Furthermore, the object mentioned at the outset is achieved by an electrical cable with at least one electrical conductor and an inner insulation layer enclosing the electrical conductor, characterized by one or both of the following features a), b): a) a ferrofluid is arranged within the inner insulation layer on the at least one electrical conductor, b) the inner insulation layer is encased by an additional outer insulation layer, wherein a ferrofluid is arranged between the inner insulation layer and the outer insulation layer.

[0019] According to an advantageous embodiment of the invention, a magnet arrangement is arranged along the longitudinal extent of the electrical cable, wherein the magnet arrangement surrounds the outer insulation layer or, if this is not present, the inner insulation layer. The magnet arrangement can, for example, comprise a plurality of ring magnets, at least one flat magnetic strip, and / or a magnetic foil.

[0020] The invention is thus suitable both for single-core electrical cables that do not have an additional outer insulation layer, as well as for single-core or multi-core electrical cables with the aforementioned outer insulation layer. The electrical conductors can be designed as solid individual conductors or as stranded conductors. A ferrofluid is a liquid that reacts to magnetic fields without solidifying. A ferrofluid can, for example, consist of magnetic particles that are relatively small, e.g., only a few nanometers in size, and are suspended in a carrier liquid. The particles can consist of iron, magnetite, and / or cobalt, for example. The particle size can, for example, be smaller than a magnetic domain, e.g., on the order of 5-10 nm in diameter. The object mentioned above is also achieved by an electrical connector for connecting to a mating connector assigned as a counterpart,in particular a socket of a power strip of the type described above, wherein the electrical plug connector has one or more plug contacts, characterized by the following features: a) at least one plug contact has an electrically conductive outer body, in the interior of which a permanent magnet is arranged, wherein the permanent magnet extends over part of the longitudinal extent of the outer body or over the entire longitudinal extent of the outer body, and / or b) the plug connector has a sleeve-shaped body which extends outside around the plug contact or the plug contacts and is spaced from the plug contact or the plug contacts, wherein the sleeve-shaped body consists entirely or partially of a permanent magnet, in particular of at least one flat magnetic strip and / or at least one magnetic foil.

[0021] In this way, electrical connectors can be better suppressed. For example, a respective plug contact can consist of a cylindrical, sleeve-shaped tube section made of an electrically conductive material, e.g., silver or copper, or be coated with such an electrically conductive material on the outside. A permanent magnet in the shape of a pin (magnet pin) can then be inserted inside this tubular body.

[0022] In the following, an electrical component that transmits electrical signals is understood to mean any type of electrical component in which temporally varying electrical voltage or current signals occur. In particular, this also includes electromechanical and electronic components. Examples of such components include electrical connectors, electrical cables, electrical circuits (e.g., in the form of printed circuit boards), or individual electrical or electronic components such as microprocessors.

[0023] Signal noise is generally understood to be a disturbance with a broad, non-specific frequency spectrum. Signal noise can be generated by internal and external noise sources. Various causes of internal noise are already known from the literature, such as thermal noise, also known as Johnson noise, or shot noise. Another internal noise source is generation-recombination noise in semiconductors. External noise sources include electromagnetic interference (EMC), e.g., power lines operated with 50 Hz AC, radio transmitters, or electrical household appliances. Another known external noise source is cosmic background noise.

[0024] The invention advantageously enables a significant reduction in the signal noise caused, for example, by the aforementioned noise sources by means of a magnetic field generator, which is advantageously arranged in a specific manner with respect to the electrical component. The arrangement is advantageously such that the magnetic flux density (B) acting on the electrical component by the magnetic field generator is considerably greater than the average magnetic flux density (B) generated by the electrical signals and emanating from the electrical component. This results in a relatively strong effect of the magnetic field on the electrical component compared to the transported electrical signals and the noise components contained therein, or compared to the magnetic field induced on average over time by the signals or noise components.The relatively strong magnetic field evens out the electron movement of the electrical signal within the electrical component, as well as the electron movement within the atoms of the electrical component's material, thereby reducing, in particular, the noise components generated by internal noise sources. Advantageously, the relatively strong magnetic field also shields the electrical component located within the magnetic field from external sources of interference, thus reducing the noise components of external noise sources in the signal. Overall, this can achieve a reduction in signal noise of at least 85 dB.

[0025] Advantageously, the electrical component is arranged rigidly relative to the magnetic field generator. This prevents relative movement between the electrical component and the magnetic field generator.

[0026] Advantageously, the magnetic field generator forms an effective shielding arrangement for the electrical component to shield the electrical component against external interference radiation.

[0027] According to the invention, a magnetic force field is generated around the electrical component, which shields external interference, since the energy of the interference sources typically present is lower than the energy of the magnetic field in the area of ​​the electrical component. The magnetic force field also improves the quality of the electrical component, e.g., in electronics, cables, and connectors, since these components can operate more smoothly and transmit even the finest signals.

[0028] It has been discovered that the advantageous noise-reducing properties of the invention are already noticeable at a magnetic flux density of B = 0.5 Tesla in conventional hi-fi equipment. A particularly advantageous reduction in signal noise is achieved at magnetic flux densities in the range of B = 1.29 to 1.42 Tesla.

[0029] The magnetic field generator advantageously generates a substantially static magnetic field. The magnetic field generator can advantageously be designed, for example, as a permanent magnet or comprise a permanent magnet. Compared to electromagnets, permanent magnets have the advantage that they do not require an electrical power supply to generate the static magnetic field. Therefore, permanent magnets can easily be used to implement the invention in areas where no power supply is available to generate the magnetic field. Furthermore, a permanent magnet also does not consume electrical energy, so permanent magnets are also advantageous in terms of low energy consumption.

[0030] In this way, inductive interference in the respective electrical component can be reliably prevented, which is particularly important for signal cables for measurement technology (measurement cables), signal cables for consumer electronics (audio / video cables), as well as for electronic components and circuit boards. By using flat-ribbon magnetic strips and / or magnetic foils with magnetic fields of varying strengths, it is possible to shield electronic components from each other and from the outside. Individual electronic components can also be shielded from inductive interference using such flat-ribbon magnetic strips and / or magnetic foils by covering or encasing them with the flat-ribbon magnetic strip and / or magnetic foil.If there are several electronic components on a circuit board, it is possible to shield an entire circuit board by positioning one or more flat magnetic strips and / or magnetic foils next to each other and / or on top of each other.

[0031] The flat ribbon magnetic strips and / or magnetic foils can be designed with various magnetic strengths. For example, they can contain ferrite magnets and / or neodymium magnets. Both types of magnets can be used to individually adapt the magnetic field strength to the conditions. In cable systems, it is also possible to ensure mutual shielding of the individual conductors by arranging flat ribbon magnetic strips and / or magnetic foils above or below the cable material. This minimizes crosstalk between the individual conductors. Furthermore, signal noise is significantly reduced. External influences such as electrical induction or other environmental interference can also be significantly minimized on the electrical components.

[0032] By introducing the ferrofluid into the interior of the cable, an inductive shielding of the individual conductors from the environment and from each other can also be achieved. If a static magnetic field is also generated outside the electrical cable, e.g. by ring magnets arranged on the outside of the electrical cable or a magnetic foil or flat magnetic strip attached to it, the shielding effect can be further improved. The ferrofluid also inductively shields fine-stranded individual conductors from one another and there is no longer any dominant crosstalk between the individual conductors. The signal noise is also significantly reduced here. In this way, even the finest signals in electronics and cable systems can be reliably transmitted. This results in a significant improvement in the clarity of signal reproduction. It is therefore possible to process and evaluate signals that would no longer be meaningfully processable without these improvements.

[0033] The invention is explained in more detail below using exemplary embodiments and drawings.

[0034] It shows

[0035] Figure 1 shows various embodiments of magnetically shielded ribbon cables,

[0036] Figure 2 shows a magnetically shielded integrated semiconductor component, Figure 3 shows a magnetically shielded electrical circuit arrangement, Figure 4 shows a magnetically shielded electrical cable, Figure 5 shows further embodiments of magnetically shielded ribbon cables, Figure 6 shows a ribbon cable with electrical conductors integrated in a ribbon magnetic strip,

[0037] Figure 7 shows electrical connectors in various embodiments, Fig. 8 - 10 show an electrical power strip in various views. Figure 1 shows respective devices 1, each having a ribbon cable 2. The ribbon cable 2 has a plurality of electrical conductors 3 arranged next to one another, which are insulated from one another and covered by insulating material 6. Magnetic shielding arrangements in the form of a ribbon magnetic strip 4 and / or a magnetic foil are arranged on both flat sides of the ribbon cable 2. The ribbon magnetic strip 4 and / or the magnetic foil has individual magnetic strips arranged next to one another, which are designed as permanent magnets of different polarity and are arranged alternately next to one another. The two devices 1 shown above are provided with ribbon magnetic strips 4, in which the individual magnets 5 extend next to one another in the longitudinal direction in strip-like manner.In the two lower devices 1, the magnets 5 are arranged orthogonally, ie they extend in strips next to each other transversely to the longitudinal direction of the ribbon cable 2.

[0038] Figure 2 shows an integrated semiconductor component 10, e.g., a microprocessor, with a housing 13 and a plurality of connection pins 11. For example, the semiconductor component 10 with its connection pins 11 can be soldered onto a circuit board 12. A magnetic shielding arrangement in the form of a flat magnetic strip 4 and / or a magnetic foil is arranged on the semiconductor component 10 or on its housing 13. Here, too, the individual magnets 5 arranged side by side in strip form can be seen, alternating with different polarities.

[0039] Figure 3 shows an electrical circuit arrangement 20 with a printed circuit board 21 and electrical and / or electronic components 22 arranged thereon. A magnetic shielding arrangement is arranged on the electrical circuit arrangement 20, here in the form of several adjacently arranged flat magnetic strips 4 and / or magnetic foils. Here, too, the adjacently arranged strip-shaped magnets 5 can be seen, which are arranged next to one another with alternating polarity.

[0040] Figure 4 shows an electrical cable 30 with a plurality of individual electrical conductors 31, each arranged in an inner insulation layer 32 enclosing the individual electrical conductor. An outer insulation layer 33 is also present, which surrounds the outer insulation layers 32 of the electrical conductors 31. Additionally, a ferrofluid 34 is arranged within each of the inner insulation layers 32 and / or between the inner insulation layers 32 and the outer insulation layer 33. The electrical cable 30 is also surrounded on the outside by a magnet arrangement 35. The magnet arrangement 35 can be formed by a plurality of ring magnets arranged one behind the other, and / or by at least one flat magnetic strip and / or a magnetic foil.Figure 5 shows an embodiment of devices 1, each with a ribbon cable 2, which has only a single electrical conductor 3 in the form of a flat sheet metal strip that extends essentially across the entire width of the ribbon cable 2. The electrical conductor 3 is in turn covered with an insulating layer 6. Magnetic shielding arrangements in the form of a ribbon magnetic strip 4 and / or a magnetic foil are arranged on both flat sides of the ribbon cable 2. The ribbon magnetic strip 4 and / or the magnetic foil has individual magnetic strips arranged next to one another, which are designed as permanent magnets of different polarity and are arranged alternately next to one another. The device 1 shown above is provided with ribbon magnetic strips 4, in which the individual magnets 5 extend next to one another in the longitudinal direction in strip-like fashion. In the lower device 1, the magnets 5 are arranged orthogonally thereto, i.e.They extend in strips next to each other transversely to the longitudinal direction of the ribbon cable 2.

[0041] Figure 6 shows a device 1 with a ribbon cable 2, in which the electrical conductors 3 are integrated directly into the carrier material of the ribbon magnetic strip 4. The individual electrical conductors 3 each have an insulating layer surrounding them, which can consist of a varnish, for example. The electrical conductors 3 can be integrated directly into the carrier material of the ribbon magnetic strip 4 during production of the latter. The ribbon magnetic strip 4 has individual magnetic strips 5 arranged next to one another, which are designed as permanent magnets of different polarity and are arranged alternately next to one another. The individual magnets 5 can extend in strip form next to one another in the longitudinal direction or orthogonally thereto, i.e. they can also be arranged in strip form next to one another transversely to the longitudinal direction of the ribbon cable 2.

[0042] Figure ? shows various embodiments of electrical connectors 50, each in a perspective view, looking toward the mating face. The connectors 50 can have a housing 51 and a plurality of plug contacts 52, such as the two connectors 50 shown on the left, or only one plug contact 52, such as the connectors 50 shown on the right. The plug contacts 52 each have an electrically conductive outer body 53, e.g., in the form of a tubular section, in the interior of which a permanent magnet 54, e.g., a magnetic pin, is inserted.

[0043] In addition, a respective connector 50 can have a sleeve-shaped body 55 enclosing the plug contacts 52, which consists entirely or partially of a permanent magnet material. The sleeve-shaped body 55 is spaced from the plug contacts 52, i.e., there is a gap into which a part of a mating connector can be inserted. In this way, magnetic rings are formed around the plug contacts 52. This ensures shielding of the contact surfaces of the plug contacts 52, since a static magnetic field is formed in the space between the permanent magnets 54 and the outer magnetic ring, i.e., the surrounding sleeve-shaped body 55.

[0044] As the two connectors 50 shown on the right illustrate, the connector 50 can also have a longitudinally movable handle on its housing 51. The sleeve-shaped body 55, which provides the outer shielding, can be arranged below the movable handle.

[0045] Figure 8 shows an electrical power strip 40, e.g., for a 220 V AC power supply, which has a housing 42 and several sockets 43 accessible on the outside of the housing 42. An electrical connector 50, e.g., a connector 50 according to Figure 7, can be plugged into each socket 43.

[0046] As Figures 9 and 10 illustrate, the power strip 40 has various components for magnetic shielding. Connecting lines 41 are arranged inside the housing 42, connecting the individual contacts of the sockets 43 to a common supply line of the power strip 40. These connecting lines 41 are provided with flat magnetic strips 4 and / or magnetic foils, or with another type of permanent magnet 44. For external shielding, the contacts of the sockets 43 can additionally be surrounded by a sleeve-shaped body 45, which consists at least partially or entirely of permanent magnet material.

Claims

Claims 1. Electrical device (1) comprising at least one electrical component and at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil attached to the electrical component, wherein the electrical component is designed as: a) a flat ribbon cable (2) having one electrical conductor (3) or several electrical conductors (3) arranged side by side in a width direction of the flat ribbon cable and insulated from each other, which are encased by insulating material (6), wherein at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil is arranged on at least one flat side of the flat ribbon cable (2) or the electrical conductor(s) (3) are embedded in a carrier material (magnetic tape) of the flat ribbon magnetic strip (4) and / or the magnetic foil,wherein the flat ribbon magnetic strip (4) and / or the magnetic foil extends over at least a part of the longitudinal extent of the flat ribbon cable (2) or the entire length of the flat ribbon cable (2), and / or b) integrated semiconductor device (10) with a housing (13) made of plastic or another insulating material in which a semiconductor circuit is embedded, and a plurality of connection pins (11) or connection pads that can be contacted on the outside of the housing (13), wherein at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil is arranged on the top of the housing, which extends over a part of the top of the housing or the entire top of the housing, and / or c) electrical circuit arrangement (20) with at least one printed circuit board (21) and electrical and / or electronic components (22) arranged thereon,wherein at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil is arranged on the electrical circuit arrangement (20), which extends over a part of the planar extent of the printed circuit board (21) or over the entire planar extent of the printed circuit board (21), and / or, d) electrical socket strip (40) with a housing (42), several sockets (43) with electrical contacts and the contacts of the sockets (439) with one or more connecting leads (41) arranged in the housing (42), wherein at least one flat magnetic strip (4) and / or at least one magnetic foil is arranged on one, several or all connecting leads (41), which extends over part of the planar extent of the connecting lead (41) or over the entire planar extent of the connecting lead (41).

2. Device according to claim 1, characterized in that at least one flat ribbon magnetic strip (4) and / or a magnetic foil is arranged on both flat sides of the ribbon cable (2) and extends over at least a part of the longitudinal extent of the ribbon cable (2) or the entire length of the ribbon cable (2).

3. Device according to claim 1 or 2, characterized in that the electrical conductor(s) (3) in the ribbon cable (2) are formed from a flat sheet material which has a significantly greater width than thickness.

4. Device according to one of claims 1 to 3, characterized in that the electrical conductor(s) (3) are each surrounded by an insulating layer formed by a varnish.

5. Device according to claim 1, characterized in that at least one flat ribbon magnetic strip (4) and / or a magnetic foil is arranged on the underside of the housing, which extends over a part of the underside of the housing or the entire underside of the housing.

6. Device according to claim 1, characterized in that at least one flat ribbon magnetic strip (4) and / or a magnetic foil is arranged on both sides of the electrical circuit arrangement (20), which extends over a part of the planar extent of the circuit board (21) or over the entire planar extent of the circuit board (21).

7. Device according to claim 1, characterized in that the power strip (40) has one or more sleeve-shaped bodies (45), wherein a sleeve-shaped body is ring-shaped around the electrical contacts of a respective socket (43). extending around the mig, wherein the sleeve-shaped body (45) consists wholly or partly of a permanent magnet (45), in particular of at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil 8. Device according to one of the preceding claims, characterized in that the flat magnetic strip (4) and / or the magnetic foil has individual strip-shaped magnets arranged side by side, which are designed as permanent magnets of different polarity and are arranged alternately next to each other.

9. Electrical cable (30) with at least one electrical conductor (3) and an inner insulating layer (32) enclosing the electrical conductor (3), characterized by one or both of the following features a), b): a) a ferrofluid is arranged within the inner insulating layer (32) on the at least one electrical conductor (3), b) the inner insulating layer (32) is enclosed by an additional outer insulating layer (33), wherein a ferrofluid is arranged between the inner insulating layer (32) and the outer insulating layer (33).

10. Electrical cable according to claim 8, characterized in that a magnet arrangement (35) is arranged along the longitudinal extent on the electrical cable (30), wherein the magnet arrangement (35) surrounds the outer insulating layer (33) or, if this is not present, surrounds the inner insulating layer (32).

11. Electrical cable according to claim 9, characterized in that the magnet arrangement (35) comprises a plurality of ring magnets, at least one flat ribbon magnetic strip (4) and / or a magnetic foil.

12. Electrical connector (50) for connecting to a mating connector, in particular a socket (43) of a power strip (40) according to claim 1, wherein the electrical connector (50) has one or more plug contacts (52), characterized by the following features: a) at least one plug contact (52) has an electrically conductive outer body (53) in the interior of which a permanent magnet (54) is arranged, wherein the permanent magnet (54) extends over a part of the longitudinal extent of the outer body (53) or over the entire longitudinal extent of the outer body (53), and / or b) The connector (50) has a sleeve-shaped body (55) that extends around the outside of the plug contact (52) or plug contacts (52) and is enclosed by the plug contact (52) or plug contacts (52), wherein the sleeve-shaped body (55) consists wholly or partially of a permanent magnet (54), in particular of at least one flat ribbon magnetic strip (4) and / or at least one magnetic foil. Electrical connector according to claim 11, characterized in that the sleeve-shaped body (55) has at least one permanent magnet (54) over its entire circumference and / or over its entire longitudinal extent.

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