WO1991004564A1 - Device for inductively connecting two-wire leads - Google Patents

Device for inductively connecting two-wire leads Download PDF

Info

Publication number
WO1991004564A1
WO1991004564A1 PCT/CH1990/000214 CH9000214W WO9104564A1 WO 1991004564 A1 WO1991004564 A1 WO 1991004564A1 CH 9000214 W CH9000214 W CH 9000214W WO 9104564 A1 WO9104564 A1 WO 9104564A1
Authority
WO
WIPO (PCT)
Prior art keywords
ferrite core
coupling
yoke
ferrite
housing part
Prior art date
Application number
PCT/CH1990/000214
Other languages
German (de)
French (fr)
Inventor
Alfred Grau
Robert Meier
Yvo Vultier
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1991004564A1 publication Critical patent/WO1991004564A1/en
Priority to NO911832A priority Critical patent/NO911832D0/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H01F2038/143—Inductive couplings for signals

Definitions

  • the present invention relates to a device according to the preamble of patent claim 1.
  • Connecting cables are often galvanically connected to two-wire cables for feeding in data or for extracting data or measured values. With couplings of this type, it is necessary to remove or pierce the insulating layer of the twisted pair cable in order to make contact. Repeated coupling of connecting lines therefore weakens the two-wire line used.
  • the present invention is therefore based on the object of creating a device for the inductive coupling of connecting lines to a two-wire line which does not have these disadvantages and which is of compact design and is easy to handle. Furthermore, the lower limit frequency of the transmission band should be as low as possible. Furthermore, the coupling between the coupling coil and the two-wire line should result in only minimal transmission losses and high crosstalk attenuation should be maintained between the coupling coils. In addition, no common mode interference should be transmitted from the two-wire line to the coupling coils.
  • FIG. 3 shows a coupling device with two ferrite cores which can be rotated relative to one another.
  • the coupling device shown in FIG. 1 has two ferrite cores 2a, 2b fastened in a housing part 1, the yoke of which has been removed.
  • the middle legs of the ferrite cores 2a, 2b are each surrounded by a coupling coil 3a, 3b and by a channel-like recess 4, which can accommodate a two-wire line.
  • Two connecting lines 6a, 6b are each connected to one of the coupling coils 3a, 3b within the housing part 1.
  • two openings 5a, 5b are provided, each of which can receive an axis around which, as in FIG shown, a second housing part containing the yoke 8a or 8b is pivotally arranged.
  • housing parts 8a, 8b each provided with a yoke are pivoted over the ferrite cores 2a, 2b and a two-wire line 10 inserted therein.
  • the pivotable arrangement of the housing parts 8a, 8b is particularly advantageous because any dirt residue that may be present is removed from the iron core 2a or 2b and the corresponding yoke with each pivoting movement.
  • the housing parts 1, 8a, 8b are connected to one another via the corresponding axes in such a way that the housing parts 8a, 8b rest on the housing part 1 with slight pressure. Furthermore, the housing parts 1, 8a, 8b, which contain the iron cores 2a, 2b or the corresponding yoke, are to be made from an insulation material which is very dimensionally stable.
  • the spacing must be selected so that the required crosstalk attenuation between the coupling coils is maintained. This is particularly important if one of the coupling coils 3a, 3b serves as a transmitting coil and the other as a receiving coil and a crosstalk from the transmitting channel into the receiving channel must not exceed a predetermined value.
  • the coupling factor between the coupling coils 3a, 3b should ideally be limited to the value that inevitably results from the transmission over the two-wire line 10.
  • a further increase in the coupling factor due to the direct inductive coupling between the coupling coils 3a, 3b and the iron cores 2a, 2b is to be avoided. This is achieved in that the housing part 1 shown in FIGS.
  • the axis 1 1, about which the housing parts 1 a, 1 b are rotated is arranged parallel and close to the channel-like recess 4 or to the two-wire line 10.
  • a deepening and widening of the channel-like recess 4 in the vicinity of the side facing the opposite housing part 1 b or 1 a are provided.
  • the housing parts 1 a, 1 b can be connected at a distance via the axis 11, which decreases when the housing parts 1 a, 1 b are rotated. This can be achieved, for example, that the axis 1 1, which is firmly connected on one side to the housing part 1 a, engages screw-like in the housing part 1 b on the other side.
  • the housing parts 1 a, 1 b are rotated relative to one another in the corresponding direction, the housing parts 1 a, 1 b approach each other, which counteracts an expansion of the two-wire line 10.
  • the pitch of the screw thread is chosen in accordance with the expected expansion of the two-wire line 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The device of the invention inductively links connector wires (6a; 6b) to a two-wire lead (10). The device has a housing (1) with a trifurcate ferrite core (2a; 2b), the central element of which is encircled by the two-wire lead (10) and at least one coupling coil (3a; 3b) joined to the connector wires (6a; 6b). The yoke of the ferrite core (2a; 2b) is mounted in the pivoting lid (8a; 8b) of the housing.

Description

Vorrichtung zur induktiven An opplunq an Zweidrahtleitunqeπ Device for inductive An opplunq on two-wire line
Die vorliegende Erfindung betrifft eine Vorrichtung gemass dem Oberbegriff des Patentan¬ spruchs 1.The present invention relates to a device according to the preamble of patent claim 1.
Zur Einspeisung von Daten oder zur Entnahme von Daten oder Messwerten werden An- schlussleitungen oft galvanisch mit Zweidrahtleitungen verbunden. Bei Ankopplungen dieser Art ist zum Kontaktieren jeweils das Entfernen oder Durchstossen der Isolierschicht der Zwet- drahtleitung erforderlich. Ein mehrmaliges Ankoppeln von Anschlussleitungen hat deshalb eine Schwächung der verwendeten Zweidrahtleitung zur Folge.Connecting cables are often galvanically connected to two-wire cables for feeding in data or for extracting data or measured values. With couplings of this type, it is necessary to remove or pierce the insulating layer of the twisted pair cable in order to make contact. Repeated coupling of connecting lines therefore weakens the two-wire line used.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ei ne Vorrichtung zur in¬ duktiven Ankopplung von Anschlussleitungen an eine Zweidrahtleitung zu schaffen, die diese Nachteile nicht aufweist und die kompakt aufgebaut sowie einfach handhabbar ist. Ferner soll die untere Grenzfrequenz des Übertragungsbandes möglichst weit unten liegen. Weiterhin soll die Kopplung zwischen der Koppelspule und der Zweidrahtleitung nur mini¬ male Übertragungsverluste ergeben und es soll eine hohe Nebensprechdampfung zwischen den Koppelspulen eingehalten werden. Zusatzlich sollen keine Common-Mode-Storungen von der Zweidrahtleitung auf die Koppelspulen übertragen werden.The present invention is therefore based on the object of creating a device for the inductive coupling of connecting lines to a two-wire line which does not have these disadvantages and which is of compact design and is easy to handle. Furthermore, the lower limit frequency of the transmission band should be as low as possible. Furthermore, the coupling between the coupling coil and the two-wire line should result in only minimal transmission losses and high crosstalk attenuation should be maintained between the coupling coils. In addition, no common mode interference should be transmitted from the two-wire line to the coupling coils.
Die Lösung dieser Aufgabe gelingt erfindungsgemass mit einer Vorrichtung, wie sie im Patentanspruch 1 gekennzeichnet ist. Vorteilhafte Ausgestaltungen der Erfindung sind in weiteren Ansprüchen angegeben.This object is achieved according to the invention with a device as characterized in claim 1. Advantageous embodiments of the invention are specified in further claims.
Anhand einer Zeichnung wird die erfindungsgemasse Vorrichtung nachfolgend beispiels¬ weise näher erläutert. Dabei zeigt:The device according to the invention is explained in more detail below using a drawing, for example. It shows:
Fig. 1 eine mit zwei Ferritkernen versehene offene Koppelvorrichtung,1 shows an open coupling device provided with two ferrite cores,
Fig. 2 die Koppelvorrichtung mit geschlossenem Gehäuse,2 the coupling device with closed housing,
Fig. 3 eine Koppelvorrichtung mit zwei gegeneinander drehbar angeordneten Ferritker¬ nen.3 shows a coupling device with two ferrite cores which can be rotated relative to one another.
Die in Fig. 1 gezeigte Koppelvorrichtung weist zwei in einem Gehauseteil 1 befestigte Ferrit¬ kerne 2a, 2b auf, deren Joch entfernt wurde. Die mittleren Schenkel der Ferritkerne 2a, 2b werden je von einer Koppelspule 3a, 3b und von einer kanalartigen Ausnehmung 4, die eine Zweidrahtleitung aufnehmen kann, umschlossen. Zwei Anschlussleitungen 6a, 6b sind inner¬ halb des Gehäuseteils 1 je mit einer der Koppelspulen 3a, 3b verbunden. Ferner sind zwei Öffnungen 5a, 5b vorgesehen, die je eine Achse aufnehmen können, um die, wie in Fig.2 gezeigt, ein zweiter, das Joch enthaltender Gehauseteil 8a bzw 8b schwenkbar angeordnet ist.The coupling device shown in FIG. 1 has two ferrite cores 2a, 2b fastened in a housing part 1, the yoke of which has been removed. The middle legs of the ferrite cores 2a, 2b are each surrounded by a coupling coil 3a, 3b and by a channel-like recess 4, which can accommodate a two-wire line. Two connecting lines 6a, 6b are each connected to one of the coupling coils 3a, 3b within the housing part 1. Furthermore, two openings 5a, 5b are provided, each of which can receive an axis around which, as in FIG shown, a second housing part containing the yoke 8a or 8b is pivotally arranged.
In Fig. 2 sind je mit einem Joch versehene Gehauseteile 8a, 8b über die Ferritkerne 2a, 2b und eine darin eingelegte Zweidrahtleitung 10 geschwenkt. Durch Schrauben 9a, 9b, die in mit einem Gewinde versehene Bohrungen 7a, 7b im Gehauseteil 1 eingreifen, können die Gehauseteile 1 , 8a, 8b derart miteinander verbunden werden, dass eine feste formschlussige Verbindung zwischen dem Ferritkern 2a bzw. 2b und je dem entsprechenden Joch entsteht. Die schwenkbare Anordnung der Gehauseteile 8a, 8b ist besonders vorteilhaft, weil bei jeder Schwenkbewegung eventuell vorhandene Schmutzruckstande vom Eisenkern 2a bzw. 2b und dem entsprechenden Joch entfernt werden. Vorteilhafterweise werden dabei die Gehause¬ teile 1 , 8a, 8b derart über die entsprechenden Achsen miteinander verbunden, dass die Gehäuseteile 8a, 8b mit leichtem Druck auf dem Gehauseteil 1 aufliegen. Ferner sollen die Gehauseteile 1 , 8a, 8b, welche die Eisenkerne 2a, 2b oder das entsprechende Joch enthalten, aus einer Isolationsmasse gefertigt sein, die sehr formstabil ist.2, housing parts 8a, 8b each provided with a yoke are pivoted over the ferrite cores 2a, 2b and a two-wire line 10 inserted therein. By screws 9a, 9b, which engage in threaded holes 7a, 7b in the housing part 1, the housing parts 1, 8a, 8b can be connected to one another in such a way that a firm, form-fitting connection between the ferrite core 2a or 2b and the corresponding one Yoke arises. The pivotable arrangement of the housing parts 8a, 8b is particularly advantageous because any dirt residue that may be present is removed from the iron core 2a or 2b and the corresponding yoke with each pivoting movement. Advantageously, the housing parts 1, 8a, 8b are connected to one another via the corresponding axes in such a way that the housing parts 8a, 8b rest on the housing part 1 with slight pressure. Furthermore, the housing parts 1, 8a, 8b, which contain the iron cores 2a, 2b or the corresponding yoke, are to be made from an insulation material which is very dimensionally stable.
Bei der Verwendung von zwei (oder mehreren) Ferritkernen muss deren Abstand so gewählt werden, dass die geforderte Nebensprechdampfung zwischen den Koppelspulen eingehalten wird. Dies ist speziell wichtig falls eine der Koppelspulen 3a, 3b als Sende- und die andere als Empfangsspule dient und ein Ubersprechen vom Sendekanal in den Empfangskanal einen vorgegebenen Wert nicht überschreiten darf. Der Kopplungsfaktor zwischen den Koppel¬ spulen 3a, 3b soll dabei idealerweise auf den Wert beschrankt werden, der sich unvermeidlich durch die Übertragung über die Zweidrahtleitung 10 ergibt. Eine weitere Erhöhung des Kopplungsfaktors durch die direkte induktive Kopplung zwischen den Koppelspulen 3a, 3b und den Eisenkernen 2a, 2b soll vermieden werden. Dies wird dadurch erreicht, dass der in Fig. 1 und Fig. 2 gezeigte Gehauseteil 1 zwischen den beiden Ferritkernen 2a, 2b, wie in Fig. 3 gezeigt, in zwei Gehäuseteile 1 a, 1 b aufgetrennt wird, wobei diese durch ein Gelenk derart miteinander verbunden werden, dass die beiden Ferritkerne 2a, 2b bezüglich ihrer Längs¬ achsen gegeneinander verdreht werden können. Bei einer Drehung des Gehauseteils 1 b bzw. des Ferritkerns 2b relativ zum Gehäuseteil 1a bzw. zum Ferritkern 2a um neunzig Grad ent¬ steht die maximal mögliche Entkopplung zwischen den Koppelspulen 3a, 3b. Als Gelenk zwischen den beiden Gehäuseteilen 1a, 1 b kann z.B. eine Achse 1 1 verwendet werden, die mit dem Gehäuseteil 1 a fest verbunden und auf der der Gehäuseteil 1 b drehbar angeordnet ist.When using two (or more) ferrite cores, their spacing must be selected so that the required crosstalk attenuation between the coupling coils is maintained. This is particularly important if one of the coupling coils 3a, 3b serves as a transmitting coil and the other as a receiving coil and a crosstalk from the transmitting channel into the receiving channel must not exceed a predetermined value. The coupling factor between the coupling coils 3a, 3b should ideally be limited to the value that inevitably results from the transmission over the two-wire line 10. A further increase in the coupling factor due to the direct inductive coupling between the coupling coils 3a, 3b and the iron cores 2a, 2b is to be avoided. This is achieved in that the housing part 1 shown in FIGS. 1 and 2 between the two ferrite cores 2a, 2b, as shown in FIG. 3, is separated into two housing parts 1 a, 1 b, this being by a joint in this way are interconnected so that the two ferrite cores 2a, 2b can be rotated relative to one another with respect to their longitudinal axes. When the housing part 1b or the ferrite core 2b is rotated relative to the housing part 1a or the ferrite core 2a by ninety degrees, the maximum possible decoupling between the coupling coils 3a, 3b arises. As a joint between the two housing parts 1a, 1b, e.g. an axis 1 1 are used, which is firmly connected to the housing part 1 a and on which the housing part 1 b is rotatably arranged.
Bei der gegenseitigen Drehung der Gehauseteile 1a, 1 b sollte eine Dehnung der eingelegten Zweidrahtleitung 10 vermieden werden. Zu diesem Zweck ist die Achse 1 1 , um die die Gehäuseteile 1 a, 1 b gedreht werden, parallel und nahe zur kanalartigen Ausnehmung 4 bzw.zur Zweidrahtleitung 10 angeordnet. Zur Vermeidung einer unerwünschten Dehnung der Zweidrahtleitung 10 bei der gegenseitigen Verdrehung der Gehauseteile 1a, 1 b kann weiterhin eine Vertiefung und Verbreiterung der kanalartigen Ausnehmung 4 in der Nahe der dem gegenüberliegenden Gehauseteil 1 b bzw 1 a zugewandten Seite vorgesehen wer¬ den. Ferner können die Gehauseteile 1a, 1 b mit einem Abstand über die Achse 1 1 verbunden werden, der sich beim Drehen der Gehauseteile 1 a, 1 b verringert. Dies kann z.B. dadurch erreicht werden, dass die Achse 1 1 , die auf der einen Seite fest mit dem Gehauseteil 1 a verbunden ist, auf der anderen Seite schraubenartig in den Gehauseteil 1 b eingreift. Bei einer gegenseitigen Verdrehung der Gehauseteile l a, 1 b in die entsprechende Richtung nähern sich somit die Gehäuseteile 1 a, 1 b einander an, was einer Dehnung der Zweidraht¬ leitung 10 entgegenwirkt. Die Steigung des Schraubengewindes wird dabei entsprechend der zu erwartenden Dehnung der Zweidrahtleitung 10 gewählt.With the mutual rotation of the housing parts 1a, 1b, an expansion of the inserted two-wire line 10 should be avoided. For this purpose, the axis 1 1, about which the housing parts 1 a, 1 b are rotated, is arranged parallel and close to the channel-like recess 4 or to the two-wire line 10. To avoid undesired expansion of the two-wire line 10 when the housing parts 1 a, 1 b are rotated relative to one another furthermore, a deepening and widening of the channel-like recess 4 in the vicinity of the side facing the opposite housing part 1 b or 1 a are provided. Furthermore, the housing parts 1 a, 1 b can be connected at a distance via the axis 11, which decreases when the housing parts 1 a, 1 b are rotated. This can be achieved, for example, that the axis 1 1, which is firmly connected on one side to the housing part 1 a, engages screw-like in the housing part 1 b on the other side. When the housing parts 1 a, 1 b are rotated relative to one another in the corresponding direction, the housing parts 1 a, 1 b approach each other, which counteracts an expansion of the two-wire line 10. The pitch of the screw thread is chosen in accordance with the expected expansion of the two-wire line 10.
ERSATZBLATT REPLACEMENT LEAF

Claims

PATENTANSP RUCHE PATENT APPROACH
1. Vorrichtung zur induktiven Ankopplung von Aπschlussleitungen (6a; 6b) an eine Zwei¬ drahtleitung (10), mit mindestens einer Koppelspule (3a; 3b) und mindestens einem drei- schenkligen Ferritkern (2a; 2b) , dadurch gekennzeichnet, dass der mittlere Schenkel des Ferritkerns (2a; 2b) von der mit der Anschlussleitung (6a; 6b) verbindbaren Koppelspule (3a; 3b) umschlossen ist und dass ein Joch des Ferritkerns (2a; 2b) derart schwenkbar angeordnet ist, dass im ausgeschwenkten Zustand die Drahte der Zwei¬ drahtleitung (10) je auf einer Seite zwischen den mittleren und einen der ausseren Schen¬ kel des Ferritkerns (2a; 2b) eingelegt werden können.1. Device for the inductive coupling of connecting lines (6a; 6b) to a two-wire line (10), with at least one coupling coil (3a; 3b) and at least one three-legged ferrite core (2a; 2b), characterized in that the middle one Leg of the ferrite core (2a; 2b) is enclosed by the coupling coil (3a; 3b) which can be connected to the connecting line (6a; 6b) and that a yoke of the ferrite core (2a; 2b) is pivoted in such a way that the wires of the Two wire lines (10) can be inserted on one side between the middle and one of the outer legs of the ferrite core (2a; 2b).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass mindestens zwei Ferritkerne (2a; 2b) mit Koppelspulen (3a; 3b) vorgesehen sind, die derart zueinan¬ der angeordnet sind, dass festgelegte Werte für die Nebensprechdampfung zwischen den Koppelspulen (3a; 3b) eingehalten werden.2. Device according to claim 1, characterized in that at least two ferrite cores (2a; 2b) with coupling coils (3a; 3b) are provided, which are arranged in such a way that specified values for the crosstalk attenuation between the coupling coils (3a; 3b ) be respected.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ferritkern (2a;.2b) ohne das schwenkbare Joch in einem ersten Gehauseteil (1) angeord¬ net ist, der zur Aufnahme der Zweidrahtleitung (10) eine kanalartige Ausnehmung (4) aufweist und dass das schwenkbare Joch in einem zweiten Gehauseteil (8a; 8b) angeord¬ net ist, der mit dem ersten Gehauseteil (1) derart über ein Gelenk verbunden ist, dass das Joch formschlüssig über die drei Schenkel des Ferritkerns (2a; 2b) geschwenkt werden kann.3. Device according to claim 1 or 2, characterized in that the ferrite core (2a; .2b) is arranged in a first housing part (1) without the pivotable yoke, which has a channel-like recess (4th) for receiving the two-wire line (10) ) and that the pivotable yoke is arranged in a second housing part (8a; 8b) which is connected to the first housing part (1) via a joint in such a way that the yoke is form-fitting over the three legs of the ferrite core (2a; 2b ) can be pivoted.
4. Vorrichtung nach Anspruch 3, dad u rch geken nze i ch net, dass die mit Koppelspulen (3a; 3b) versehenen Ferritkerne (2a; 2b) gleich ausgerichtet sind.4. The device according to claim 3, so that the ferrite cores (2a; 2b) provided with coupling coils (3a; 3b) are aligned in the same way.
5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass je zwei mindestens einen Ferritkern (2a; 2b) aufweisende Gehäuse (1a; 1b) derart über ein Gelenk miteinander verbunden sind, dass die Ferritkerne (2a; 2b) vorzugsweise um zumindest annähernd neunzig Grad gegeneinander drehbar sind.5. The device according to claim 3 or 4, characterized in that two at least one ferrite core (2a; 2b) housing (1a; 1b) are connected to each other via a joint such that the ferrite cores (2a; 2b) preferably by at least approximately are rotatable ninety degrees against each other.
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekenn¬ zeichnet, dass der mittlere Schenkel des Ferritkerns (2a; 2b) eine annähernd recht¬ eckige, runde oder elliptische Form aufweist und die beiden ausseren Schenkel dem entsprechend ein Segment einer Strecke, eines Kreises oder einer Ellipse bilden.6. Device according to one of the preceding claims, characterized gekenn¬ characterized in that the middle leg of the ferrite core (2a; 2b) has an approximately rectangular, round or elliptical shape and the two outer legs accordingly a segment of a distance, a circle or form an ellipse.
ERSATZBLATT REPLACEMENT LEAF
PCT/CH1990/000214 1989-09-12 1990-09-10 Device for inductively connecting two-wire leads WO1991004564A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO911832A NO911832D0 (en) 1989-09-12 1991-05-10 DEVICE FOR INDUCTIVE CONNECTION TO TWO-LINE LINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3325/89-1 1989-09-12
CH332589 1989-09-12

Publications (1)

Publication Number Publication Date
WO1991004564A1 true WO1991004564A1 (en) 1991-04-04

Family

ID=4253528

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1990/000214 WO1991004564A1 (en) 1989-09-12 1990-09-10 Device for inductively connecting two-wire leads

Country Status (2)

Country Link
EP (1) EP0417542A1 (en)
WO (1) WO1991004564A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH684722A5 (en) * 1992-05-26 1994-11-30 Siemens Ag Albis Circuitry for coupling a transmitter to a transmission line.
BR9812905A (en) * 1997-10-10 2000-08-08 Display Edge Technology Ltd Coupling device for magnetic or inductive coupling of a first and a second electrical conductor, and, processes for coupling a length and a second electrical conductor, and of coupling a pair of conductors using at least two magnetic core elements
HK1060026A2 (en) * 2003-01-18 2004-06-25 Access Ip Ltd Power line communication system
CN102792400B (en) * 2010-03-03 2016-11-09 皇家飞利浦电子股份有限公司 Part tool kit, connection equipment, luminaire and luminous body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB400233A (en) * 1932-02-22 1933-10-23 Neville Wallace Gilbert Improvements in, or relating to, static electric transformers, and to the application of such transformers to cooking stoves, cooking utensils, and the like
US3921114A (en) * 1972-11-30 1975-11-18 Eastern Electronics Norwich Transformer with relatively movable sections
FR2434512A1 (en) * 1978-08-23 1980-03-21 Rizh Elektromashinostroitelny Electric motor thyristor control device - has rotary armature near three-shank core, whose axis is displaced from core symmetry axis
JPS56140609A (en) * 1980-04-04 1981-11-04 Agency Of Ind Science & Technol Contactless power feeding device
JPS61207008A (en) * 1985-03-11 1986-09-13 Tetsuo Ishii Voltage regulator
EP0260725A2 (en) * 1986-09-17 1988-03-23 The Boeing Company Core coupled transmitter/receiver loops for connectorless entertainment systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB400233A (en) * 1932-02-22 1933-10-23 Neville Wallace Gilbert Improvements in, or relating to, static electric transformers, and to the application of such transformers to cooking stoves, cooking utensils, and the like
US3921114A (en) * 1972-11-30 1975-11-18 Eastern Electronics Norwich Transformer with relatively movable sections
FR2434512A1 (en) * 1978-08-23 1980-03-21 Rizh Elektromashinostroitelny Electric motor thyristor control device - has rotary armature near three-shank core, whose axis is displaced from core symmetry axis
JPS56140609A (en) * 1980-04-04 1981-11-04 Agency Of Ind Science & Technol Contactless power feeding device
JPS61207008A (en) * 1985-03-11 1986-09-13 Tetsuo Ishii Voltage regulator
EP0260725A2 (en) * 1986-09-17 1988-03-23 The Boeing Company Core coupled transmitter/receiver loops for connectorless entertainment systems

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 41 (E-478)(2488) 06 Februar 1987, & JP-A-61 207008 (TETSUO ISHII) siehe das ganze Dokument *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 21 (E-93)(899) 06 Februar 1982, & JP-A-56 140609 (KOGYO GIJUTSUIN) siehe das ganze Dokument *

Also Published As

Publication number Publication date
EP0417542A1 (en) 1991-03-20

Similar Documents

Publication Publication Date Title
DE69515796T2 (en) Spiral springs with end parts suitable for weldless connection
DE69418888T2 (en) TURNTABLE CONNECTOR FOR USE WITH A LONG STRETCHED FLEXIBLE ELEMENT OF SMALL DIAMETER WITH ELECTRICAL PROPERTIES
DE69300865T3 (en) ELECTRICAL CONNECTOR WITH SHEET AS PLUG-IN CONTACT MATERIAL.
DE2951455C2 (en)
DE3823617C2 (en)
EP0938165B1 (en) Coaxial high frequency cable connector
DE19647315A1 (en) Element with coupled lines
DE3887255T2 (en) Self-stripping connector for an electrical conductor.
DE1952354A1 (en) Connector for attachment to a number of external contact pins of an electrical device
DE69423658T2 (en) CONNECTION BLOCK
DE19650017C1 (en) Clamping device
DE2731001A1 (en) ELECTRIC PLUG-IN SOCKET
WO1991004564A1 (en) Device for inductively connecting two-wire leads
DE2934366A1 (en) HIGH VOLTAGE TRANSFORMER
EP0945929B1 (en) Connector for shielded cable
DE3127693A1 (en) Junction element between a waveguide and a micro-stripline
DE2445565A1 (en) HIGH FREQUENCY COAXIAL CABLE AND METHOD OF ITS MANUFACTURE
EP0757409B1 (en) Electrical connector
DE69008015T2 (en) Field rotating waveguide transition.
EP0578099B1 (en) Coaxial plug connector component
DE2910810C2 (en) Contact spring
CH693727A5 (en) Contact spring and socket with the same.
DE2111947C3 (en) Connector for coaxial pairs of communication cables
DE2302011C (en) Microwave device for power limitation, in particular for radar systems
DE19752226A1 (en) Coaxial connector

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): NO US