US3514755A - Electromagnetic coupler for a switching matrix - Google Patents

Electromagnetic coupler for a switching matrix Download PDF

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Publication number
US3514755A
US3514755A US560769A US3514755DA US3514755A US 3514755 A US3514755 A US 3514755A US 560769 A US560769 A US 560769A US 3514755D A US3514755D A US 3514755DA US 3514755 A US3514755 A US 3514755A
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US
United States
Prior art keywords
lines
incoming
switching matrix
outgoing
pins
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US560769A
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English (en)
Inventor
Hans Aicher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Application granted granted Critical
Publication of US3514755A publication Critical patent/US3514755A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Definitions

  • the coupling device includes a generally U-shaped pin which is made of ferromagnetic material.
  • the legs of the pins form an elongated, narrow air gap to minimize the reluctance of the coupler.
  • the inner sides of the legs of the U-shaped coupling device form two areas which' face each other. This enlarges the areas which border on the air gap between the two legs thus reducing the magnetic reluctance of the device. Plugs of this type can be inserted into openings in a sheet of insulating material which has incoming lines on one side and outgoing lines on the other side.
  • the present invention relates to an electromagnetic coupler for transmitting electrical signals from an incoming line to an outgoing line of a switching matrix. More particularly, this invention relates to a U-shaped ferromagnetic coupler which can be plugged in at a juncture of an incoming line and an outgoing line of a telephone installation, for example, for connecting together lines for long distance communications.
  • Another object of the present invention is to provide an electromagnetic coupling device which reduces the dispersion of the magnetic flux and accordingly provides a better transmission of an electrical signal.
  • FIG. l there is shown a switching matrix typical of the type used in long distance telephone communications for connecting together incoming and outgoing lines.
  • incoming electrical signals are transmitted to the switching matrix and are conveyed on from there via outgoing lines according to the particular switching arrangement which has been called for.
  • a three dimensional switching matrix consisting of two planar functionally interacting switching matrixes 1 and 2 is shown.
  • the switching matrixes 1 and 2 consist of sheets of electrical insulating material which serve as supports or carriers for loop-shaped conducting lines.
  • the switching matrixes 1 and 2 may be in the form of printed circuit boards having incoming lines 3 printed on one side of the board and outgoing lines 4 printed on the other side of the board.
  • the incoming lines 3 are arranged in a manner so that they cross the outgoing lines 4, and, therefore, can be inductively coupled to any one of a plurality of the outgoing lines depending on the position ofelectromagnetic coupling pins, designated 9.
  • the sheets of insulating material are provided with openings 5 and 6 into which the coupling pins 9 can be inserted.
  • a twostep coordination switch 7, 8 which is known in the art.
  • the coordination switch 7, 8 is effective to connect the incoming lines 3 to a signal emitter (not shown).
  • the transmission of the incoming electrical signal from the incoming line 3 to the outgoing line 4 is effected by the U-shaped ferromagnetic coupling pins 9.
  • a pin 9' is plugged in with one leg 10 (FIG. 2) in an opening 5 at the crossing point of the lines 3 and 4; the other leg 12 is inserted into an opening 6 which is located remotely from the crossing point.
  • the legs 10 and 12 are connected by a crosspiece 11.
  • the length of the legs 10 and 12 is such that an elongated, narrow air gap is for-med.
  • the magnetic reluctance of the air gap between the legs 10 and 12 is considerably decreased so that upon exciting the pin( s) 9 a strong magnetic field having very little dispersion is achieved. Instead, the magnetic field assumes the shape of the pins 9. This greatly favors the transmission of the electrical signal on the incoming lines 3 to the outgoing line 4 in that it makes possible almost a closed iron loop.
  • a strong magnetic flux is also achieved due to the fact that the inner sides of the legs 10 and 12 form two large areas which face each other.
  • the switching matrix 2 is also provided with plugs 9 in accordance with the coupling plan which is desired.
  • the switching matrixes 1 and 2 are also provided with rectifiers 13 in the incoming lines 3.
  • the rectifiers 13 assure that there is no inadvertent inductive coupling between the adjoining incoming lines 3 since the current carrying direction of the rectifiers is opposite to the current which would be so induced.
  • a plurality of amplifiers are shown and are designated 14, there being one amplifier provided for each outgoing line 4 of the switching matrix 1, and the corresponding outgoing line of the switching matrix 2.
  • the outgoing signals from the amplifiers 14 can be used for various purposes such as the controlling of relays, or the like.
  • switching matrixes 1 and 2 can be provided, for example, a three dimensional matrix is possible. Where the crossing points are arranged together very close the lines 3 and 4 can be disposed in a serpentine manner on the sheets of insulation.
  • pins being in a U-shape (9) and having legs (10,
  • a switching matrix which comprises:
  • U-shaped pins (9) having legs (10, 12) which are insertable into said apertures for electromagnetically coupling an electrical signal in said input line to said output line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
US560769A 1965-07-01 1966-06-27 Electromagnetic coupler for a switching matrix Expired - Lifetime US3514755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES97930A DE1241496B (de) 1965-07-01 1965-07-01 Koppelfeld fuer Fernmeldeanlagen

Publications (1)

Publication Number Publication Date
US3514755A true US3514755A (en) 1970-05-26

Family

ID=7521099

Family Applications (1)

Application Number Title Priority Date Filing Date
US560769A Expired - Lifetime US3514755A (en) 1965-07-01 1966-06-27 Electromagnetic coupler for a switching matrix

Country Status (7)

Country Link
US (1) US3514755A (sr)
AT (1) AT259031B (sr)
BE (1) BE683546A (sr)
CH (1) CH452614A (sr)
DE (1) DE1241496B (sr)
GB (1) GB1127664A (sr)
NL (1) NL6608307A (sr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226604A (en) * 1960-09-16 1965-12-28 Electronique & Automatisme Sa Electrical current routing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104587B (de) * 1959-02-12 1961-04-13 Siemens Ag Schaltgeraet nach Art eines Kreuzschienenverteilers od. dgl.
FR1292872A (fr) * 1960-06-28 1962-05-04 Philips Nv Matrices de commutation à deux ensembles de fils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226604A (en) * 1960-09-16 1965-12-28 Electronique & Automatisme Sa Electrical current routing device

Also Published As

Publication number Publication date
NL6608307A (sr) 1967-01-02
AT259031B (de) 1967-12-27
DE1241496B (de) 1967-06-01
GB1127664A (en) 1968-09-18
BE683546A (sr) 1967-01-03
CH452614A (de) 1968-03-15

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