DE547700C - Device for telephony in four-wire circuit - Google Patents

Device for telephony in four-wire circuit

Info

Publication number
DE547700C
DE547700C DEF62566D DEF0062566D DE547700C DE 547700 C DE547700 C DE 547700C DE F62566 D DEF62566 D DE F62566D DE F0062566 D DEF0062566 D DE F0062566D DE 547700 C DE547700 C DE 547700C
Authority
DE
Germany
Prior art keywords
wire circuit
telephony
coil groups
circuit according
wire
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
Application number
DEF62566D
Other languages
German (de)
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk 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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Priority to DEF62566D priority Critical patent/DE547700C/en
Application granted granted Critical
Publication of DE547700C publication Critical patent/DE547700C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Description

Einrichtung zum Fernsprechen in VierdrahtschaItung Im Hauptpatent ist eine Einrichtung zum Fernsprechen inVierdrahtschaltung beschrieben, bei der in einem Kabel mit Viererverseilung je zwei Doppelleitungen, von denen jeweils die eine gegenläufig zur andern für dasselbe Gespräch benutzt wird, einen Vierer bilden, der mit einer elektrostatischen Schutzhülle versehen ist.Device for telephony in four-wire circuit in the main patent a device for telephony in four-wire circuit is described in which in a four-stranded cable, two double lines each, of which the one is used opposite to the other for the same conversation, form a foursome, which is provided with an electrostatic protective cover.

Gemäß der Erfindung wird nicht nur im Kabel, sondern auch an den Verbindungsstellen und an den Zuführungen zu den Pupinspulen jeder Vierdrahtkreis statisch gegen die übrigen abgeschirmt; ferner wird vorgeschlagen, die zur Belastung eines jeden Vierdrahtkreises dienenden Spulen gegen die übrigen elektrostatisch und elektromagnetisch abzuschirmen. Die Abschirmung der Leitungsteile kann in bekannter Weise durch Schutzhüllen aus Stanniol, metal-Jisiertem Papier usw., die Abschirmung der Spulen durch Kästen aus ferromagnetischem Material erfolgen. Durch die Erfindung wird die Nebensprechfreiheit der Vierdrahtschaltung in beträchtlichem Maße erhöht und dadurch die im Hauptpatent beschriebene Einrichtung vervollkommnet.According to the invention, not only in the cable, but also at the connection points and at the leads to the Pupin coils each four-wire circuit statically against the remaining shielded; It is also proposed that the load on each four-wire circuit the coils serving to shield them electrostatically and electromagnetically from the rest. The shielding of the line parts can be made in a known manner by protective sheaths Tinfoil, metal-coated paper, etc., the coils are shielded by boxes ferromagnetic material. The invention makes crosstalk freedom the four-wire circuit increased to a considerable extent and thereby that in the main patent facility described perfected.

Claims (2)

PATENTANSPRÜCHE: z. Einrichtung zum Fernsprechen in Vierdrahtschaltung nach Patent 49? 140, dadurch gekennzeichnet, daß jeder Vierdrahtkreis gegen die übrigen auch an den Verbindungsstellen und an den Zuführungen zu den Pupinspulen statisch abgeschirmt ist. PATENT CLAIMS: e.g. Device for telephony in four-wire circuit according to patent 49? 140, characterized in that each four-wire circuit against the the rest also at the connection points and at the feeds to the Pupin coils is statically shielded. 2. Einrichtung zum Fernsprechen in Vierdrahtschaltung nach Patent 4g2 i4o; dadurch gekennzeichnet, daß die Spulengruppen jedes Vierdrahtkreises gegen die übrigen Spulengruppen elektrostatisch und elektromagnetisch geschützt sind.2. Device for telephony in four-wire circuit according to patent 4g2 i4o; characterized in that the coil groups of each four-wire circuit Electrostatically and electromagnetically protected against the other coil groups are.
DEF62566D 1926-11-28 1926-11-28 Device for telephony in four-wire circuit Expired DE547700C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF62566D DE547700C (en) 1926-11-28 1926-11-28 Device for telephony in four-wire circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF62566D DE547700C (en) 1926-11-28 1926-11-28 Device for telephony in four-wire circuit

Publications (1)

Publication Number Publication Date
DE547700C true DE547700C (en) 1932-03-26

Family

ID=7109562

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF62566D Expired DE547700C (en) 1926-11-28 1926-11-28 Device for telephony in four-wire circuit

Country Status (1)

Country Link
DE (1) DE547700C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875674C (en) * 1948-11-25 1953-05-04 Normalzeit G M B H Arrangement for four-wire operation in telephone systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875674C (en) * 1948-11-25 1953-05-04 Normalzeit G M B H Arrangement for four-wire operation in telephone systems

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