ES8601608A1 - Un circuito de adaptacion de impedancias de un aparato de abonado telefonico - Google Patents

Un circuito de adaptacion de impedancias de un aparato de abonado telefonico

Info

Publication number
ES8601608A1
ES8601608A1 ES534300A ES534300A ES8601608A1 ES 8601608 A1 ES8601608 A1 ES 8601608A1 ES 534300 A ES534300 A ES 534300A ES 534300 A ES534300 A ES 534300A ES 8601608 A1 ES8601608 A1 ES 8601608A1
Authority
ES
Spain
Prior art keywords
impedance
line
instrument
impedance matching
matching 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
ES534300A
Other languages
English (en)
Other versions
ES534300A0 (es
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 Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority claimed from GB08319222A external-priority patent/GB2154831B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of ES534300A0 publication Critical patent/ES534300A0/es
Publication of ES8601608A1 publication Critical patent/ES8601608A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
  • Telephone Function (AREA)

Abstract

CIRCUITO PARA LA ADAPTACION DE IMPEDANCIA DE UN APARATO DE ABONADO TELEFONICO. CONSTA DE UN PAR DE TERMINALES DE SALIDA PARA LA CONEXION AL BUCLE DE ABONADO; DE UNA PRIMERA IMPEDANCIA CONECTADA A TRAVES DE LOS TERMINALES DE SALIDA; Y DE ELEMENTOS CON LOS QUE UNA SEGUNDA IMPEDANCIA DE SIGNO OPUESTO A LA PRIMERA SE CONECTA EN PARALELO CON LA PRIMERA IMPEDANCIA PROPORCIONANDO LA COMBINACION PARALELO DE LAS DOS IMPEDANCIAS UNA ADAPTACION DE IMPEDANCIA DEL APARATO AL BUCLE DE ABONADO. LA SALIDA DE LINEA INCLUYE UN BUCLE DE REALIMENTACION QUE COMPRENDE UNA CONFIGURACION SERIE DE UNA IMPEDANCIA POSITIVA Y UN AMPLIFICADOR DC ENTRE LA LINEA Y LA ENTRADA DEL AMPLIFICADOR EXCITADOR.
ES534300A 1983-07-15 1984-07-13 Un circuito de adaptacion de impedancias de un aparato de abonado telefonico Expired ES8601608A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08319222A GB2154831B (en) 1983-06-29 1983-07-15 Impedance matching circuit

Publications (2)

Publication Number Publication Date
ES534300A0 ES534300A0 (es) 1985-10-16
ES8601608A1 true ES8601608A1 (es) 1985-10-16

Family

ID=10545801

Family Applications (1)

Application Number Title Priority Date Filing Date
ES534300A Expired ES8601608A1 (es) 1983-07-15 1984-07-13 Un circuito de adaptacion de impedancias de un aparato de abonado telefonico

Country Status (7)

Country Link
JP (1) JPS6074732A (es)
KR (1) KR850005046A (es)
AU (1) AU3044284A (es)
ES (1) ES8601608A1 (es)
FR (1) FR2549325A1 (es)
GB (1) GB2146505B (es)
IT (1) IT1174568B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6243944A (ja) * 1985-08-21 1987-02-25 Toshiba Corp 電話機回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1233955A (es) * 1967-10-23 1971-06-03
JPS5679551A (en) * 1979-12-04 1981-06-30 Hitachi Ltd Bus line termination system

Also Published As

Publication number Publication date
KR850005046A (ko) 1985-08-19
GB8417828D0 (en) 1984-08-15
IT1174568B (it) 1987-07-01
GB2146505B (en) 1987-04-15
GB2146505A (en) 1985-04-17
ES534300A0 (es) 1985-10-16
IT8421777A0 (it) 1984-07-06
IT8421777A1 (it) 1986-01-06
JPS6074732A (ja) 1985-04-27
FR2549325A1 (fr) 1985-01-18
AU3044284A (en) 1985-01-17

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