ES484232A1 - Dispositivo de separacion y de equilibrado de las vias de emision y de recepcion para instalacion telefonica - Google Patents

Dispositivo de separacion y de equilibrado de las vias de emision y de recepcion para instalacion telefonica

Info

Publication number
ES484232A1
ES484232A1 ES484232A ES484232A ES484232A1 ES 484232 A1 ES484232 A1 ES 484232A1 ES 484232 A ES484232 A ES 484232A ES 484232 A ES484232 A ES 484232A ES 484232 A1 ES484232 A1 ES 484232A1
Authority
ES
Spain
Prior art keywords
resistors
separation
network
output
circuit
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
ES484232A
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Publication of ES484232A1 publication Critical patent/ES484232A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit
    • 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
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Dispositivo de separación y de equilibrado de las vías de emisión y de recepción para instalación telefónica que incluye una red de conexión del tipo de hilos unidireccionales para conectar empalmes a aparatos, del tipo de dos hilos bidireccionales utilizados para la transmisión en fonía y para la alimentación del aparato en corriente continua, incluyendo dicho dispositivo equipos de separación y de equilibrado asociados a las líneas de aparato y a los empalmes.
ES484232A 1978-09-19 1979-09-18 Dispositivo de separacion y de equilibrado de las vias de emision y de recepcion para instalacion telefonica Expired ES484232A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7826822A FR2437116A1 (fr) 1978-09-19 1978-09-19 Dispositif de separation et d'equilibrage pour autocommutateurs telephoniques

Publications (1)

Publication Number Publication Date
ES484232A1 true ES484232A1 (es) 1980-04-16

Family

ID=9212773

Family Applications (1)

Application Number Title Priority Date Filing Date
ES484232A Expired ES484232A1 (es) 1978-09-19 1979-09-18 Dispositivo de separacion y de equilibrado de las vias de emision y de recepcion para instalacion telefonica

Country Status (3)

Country Link
US (1) US4292479A (es)
ES (1) ES484232A1 (es)
FR (1) FR2437116A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478908B1 (es) * 1980-03-21 1984-08-03 Thomson Csf Mat Tel
CA1157125A (en) * 1981-11-18 1983-11-15 Nortel Networks Corporation Electronic hybrid circuits
GB8302673D0 (en) * 1983-02-01 1983-03-02 Motorola Inc Borsht/slic auto balancing technique
FR2564678B1 (fr) * 1984-05-18 1986-09-12 Thomson Csf Mat Tel Interface de liaison de circuit d'abonne pour autocommutateur telephonique
DE3586696T2 (de) * 1984-05-30 1993-04-01 Hitachi Ltd Pcm-coder/decoder mit zweidraht/vierdrahtumwandlung.
FR2577367B1 (fr) * 1985-02-13 1988-03-11 Alsatel Radio Telecommunicatio Dispositif de communication radiotelephonique
US4677667A (en) * 1985-08-29 1987-06-30 Gte Communication Systems Corporation Subscriber line circuit having improved AC impedance matching
JP2898165B2 (ja) * 1993-04-16 1999-05-31 シャープ株式会社 ハイブリッド回路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2063475A5 (es) * 1969-10-17 1971-07-09 Labo Cent Telecommunicat
DE2251444C2 (de) * 1972-10-20 1983-07-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Koppelfeld-Anordnung zur breitbandigen Signalübertragung in Fernmeldeanlagen
BR7408695D0 (pt) * 1973-10-29 1975-08-26 Gen Electric Circuito hibrido ativo aperfeicoado
US3973089A (en) * 1973-10-29 1976-08-03 General Electric Company Adaptive hybrid circuit
GB1515510A (en) * 1974-11-27 1978-06-28 Plessey Co Ltd Transmission networks for telephone system
GB1572595A (en) * 1975-12-01 1980-07-30 Post Office Two-wire to four-wire converters
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability
US4053722A (en) * 1976-10-04 1977-10-11 The United States Of America As Represented By The Secretary Of The Navy Solid state two-wire/four-wire converter with common battery

Also Published As

Publication number Publication date
FR2437116B1 (es) 1984-01-20
US4292479A (en) 1981-09-29
FR2437116A1 (fr) 1980-04-18

Similar Documents

Publication Publication Date Title
CA1084185A (en) Transformerless two-wire/four-wire hybrid with dc sourcing capability
EP0346874A3 (en) Telephone circuit using dc blocked transformer and negative impedance technique
US4472608A (en) Subscriber line interface circuit
ES484232A1 (es) Dispositivo de separacion y de equilibrado de las vias de emision y de recepcion para instalacion telefonica
US3529099A (en) Telephone subset with resistive hybrid network
GB1242312A (en) Improvements in or relating to telephone speech circuits
US3083265A (en) Conference call circuit
CA1123131A (en) Transformerless trunk circuit
US4297536A (en) Self-adjusting hybrid network
US3748400A (en) Circuit arrangement for attenuation compensation in telecommunication subscriber stations
GB727765A (en) Improvements in or relating to negative impedance devices
EP0895438A2 (de) Schaltungsanordnung für eine Netzabschlusseinheit
US3943432A (en) Electronic feeding bridge
US3578911A (en) Telephone wire pair compensator utilizing negative capacitance circuit
US3189693A (en) 2-to-4 wire converter
GB1216495A (en) Electrical impedance networks
GB1130360A (en) Communication circuits
GB917194A (en) Improvements in or relating to negative feedback transistor amplifiers
GB943423A (en) Telecommunication receivers
GB1274270A (en) Improvements in or relating to electrical attenuation equalizer circuits
CA1064632A (en) Switching circuit
GB1030941A (en) Circuit arrangement for varying the level of a signal
CA1142281A (en) Transformerless trunk circuit
GB805726A (en) Improvements in or relating to circuit arrangements for automatically regulating sidetone damping in telephone stations
JPS57109450A (en) Howling preventing circuit for telephone set callable by loudspeaker

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970203