ES462859A1 - Un circuito de acoplamiento perfeccionado para interconectaruna linea de transmision de una unidad terminal de remota a una unidad central. - Google Patents

Un circuito de acoplamiento perfeccionado para interconectaruna linea de transmision de una unidad terminal de remota a una unidad central.

Info

Publication number
ES462859A1
ES462859A1 ES462859A ES462859A ES462859A1 ES 462859 A1 ES462859 A1 ES 462859A1 ES 462859 A ES462859 A ES 462859A ES 462859 A ES462859 A ES 462859A ES 462859 A1 ES462859 A1 ES 462859A1
Authority
ES
Spain
Prior art keywords
telephone line
ringing current
directional transfer
interfacing circuit
line interfacing
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
ES462859A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of ES462859A1 publication Critical patent/ES462859A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H04L25/0268—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling with modulation and subsequent demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/008—Using DC/DC converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Facsimiles In General (AREA)

Abstract

Un circuito de acoplamiento perfeccionado para interconectar una línea de transmisión de una unidad terminal remota a una unidad central, caracterizado porque incluye: un transformador de radiofrecuencia con un arrollamiento primario orientado hacia la unidad central y con un arrollamiento secundario orientado hacia la línea de transmisión, medio de conmutación para conectar los extremos de dicho arrollamiento primario alternativamente a masa a un ritmo de repetición de radiofrecuencia, medios para conectar una toma central de dicho arrollamiento primario a una fuente de alimentación de tensión continua, medios para conectar la toma central de dicho arrollamiento primario a dicha unidad central y medios de detección conectados al arrollamiento secundario del transformador de radiofrecuencia, por una parte, y por otra parte, a la línea de transmisión.
ES462859A 1976-10-04 1977-10-03 Un circuito de acoplamiento perfeccionado para interconectaruna linea de transmision de una unidad terminal de remota a una unidad central. Expired ES462859A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7630658A FR2371840A1 (fr) 1976-10-04 1976-10-04 Circuit d'interface

Publications (1)

Publication Number Publication Date
ES462859A1 true ES462859A1 (es) 1978-06-01

Family

ID=9178652

Family Applications (1)

Application Number Title Priority Date Filing Date
ES462859A Expired ES462859A1 (es) 1976-10-04 1977-10-03 Un circuito de acoplamiento perfeccionado para interconectaruna linea de transmision de una unidad terminal de remota a una unidad central.

Country Status (12)

Country Link
US (1) US4115660A (es)
AU (1) AU509633B2 (es)
BE (1) BE857998A (es)
BR (1) BR7706625A (es)
CA (1) CA1075840A (es)
DE (1) DE2741681A1 (es)
ES (1) ES462859A1 (es)
FR (1) FR2371840A1 (es)
GB (1) GB1577533A (es)
IT (1) IT1115393B (es)
NL (1) NL7710053A (es)
SE (1) SE7711090L (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802423A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsinrichting voor een lijnstroomloop.
NL7802421A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsschakeling voor een abonneelijnstroom- loop.
NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903663A (nl) * 1979-05-10 1980-11-12 Philips Nv Versterker voor toepassing in een lijncircuit.
WO1981000658A1 (en) * 1979-08-31 1981-03-05 Electro Med Eng Pty Ltd Telephone line data isolator
DE3171608D1 (en) * 1981-10-28 1985-09-05 Ibm Line circuit containing impedance adaptation means
US4489222A (en) * 1982-09-13 1984-12-18 The Board Of Trustees Of The Leland Stanford, Junior University Telephone line interface
US4656659A (en) * 1985-07-18 1987-04-07 Itt Corporation Programmable ring signal generator
US4679132A (en) * 1985-08-08 1987-07-07 American Telephone And Telegraph Company, At&T Bell Laboratories Floating battery feed circuit using multifilar transformer
CA1283742C (en) * 1987-06-15 1991-04-30 Gyula Jakab Subscriber line interface circuit and transformer therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794857A (en) * 1953-07-28 1957-06-04 Westinghouse Air Brake Co Control circuit for communications apparatus
US3491207A (en) * 1965-10-07 1970-01-20 Superior Continental Corp Subscriber's two-wire line including carrier telephone communication system
US3577202A (en) * 1967-07-06 1971-05-04 Stromberg Carlson Corp Telephone hybrid arrangement with frequency separation for use with tdm systems
US4011410A (en) * 1973-11-13 1977-03-08 Thomas Robert M Communication system interface circuits

Also Published As

Publication number Publication date
FR2371840A1 (fr) 1978-06-16
GB1577533A (en) 1980-10-22
BE857998A (fr) 1977-12-16
IT1115393B (it) 1986-02-03
CA1075840A (en) 1980-04-15
NL7710053A (nl) 1978-04-06
BR7706625A (pt) 1978-07-18
SE7711090L (sv) 1978-04-05
FR2371840B1 (es) 1982-05-14
AU2887677A (en) 1979-03-22
US4115660A (en) 1978-09-19
AU509633B2 (en) 1980-05-22
DE2741681A1 (de) 1978-04-06

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103