ES8700820A1 - Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico - Google Patents

Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico

Info

Publication number
ES8700820A1
ES8700820A1 ES545071A ES545071A ES8700820A1 ES 8700820 A1 ES8700820 A1 ES 8700820A1 ES 545071 A ES545071 A ES 545071A ES 545071 A ES545071 A ES 545071A ES 8700820 A1 ES8700820 A1 ES 8700820A1
Authority
ES
Spain
Prior art keywords
amplifier
line
coupled
gain
differential
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
ES545071A
Other languages
English (en)
Other versions
ES545071A0 (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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8700820A1 publication Critical patent/ES8700820A1/es
Publication of ES545071A0 publication Critical patent/ES545071A0/es
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

CIRCUITO DE LINEA PARA LA ALIMENTACION DE UN BUCLE DE CORRIENTE A UNA LINEA DE ABONADO TELEFONICO DE DOS HILOS. CONSTA DE UN PRIMER Y UN SEGUNDO AMPLIFICADOR DIFERENCIAL (11, 14) QUE TIENEN CADA UNO DE ELLOS EL MISMO FACTOR DE GANANCIA; DE UN AMPLIFICADOR DIFERENCIAL REALIMENTADO (16) QUE TIENE UN TERMINAL DE ENTRADA ACOPLADO A UN TERMINAL DE LA LINEA Y UNA SEGUNDA ENTRADA ACOPLADA A OTRO TERMINAL DE DICHA LINEA; Y DE UN AMPLIFICADOR DE GANANCIA (21) CONTROLABLE QUE TIENE UN TERMINAL DE ENTRADA ACOPLADO AL TERMINAL DE SALIDA DEL PRIMER AMPLIFICADOR DIFERENCIAL Y MEDIOS DE ACOPLO PARA LA VARIACION DE LA GANANCIA QUE OFRECE UNA CORRIENTE A LA LINEA, DE ACUERDO CON EL VALOR DE LA VARIACION DE DICHA GANANCIA.
ES545071A 1984-07-11 1985-07-11 Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico Expired ES8700820A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/629,659 US4581487A (en) 1984-07-11 1984-07-11 Universal DC feed for telephone line and trunk circuits

Publications (2)

Publication Number Publication Date
ES8700820A1 true ES8700820A1 (es) 1986-10-01
ES545071A0 ES545071A0 (es) 1986-10-01

Family

ID=24523931

Family Applications (1)

Application Number Title Priority Date Filing Date
ES545071A Expired ES8700820A1 (es) 1984-07-11 1985-07-11 Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico

Country Status (5)

Country Link
US (1) US4581487A (es)
EP (1) EP0168318B1 (es)
AT (1) ATE50103T1 (es)
DE (1) DE3575832D1 (es)
ES (1) ES8700820A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706281A (en) * 1984-04-30 1987-11-10 American Telephone And Telegraph Company Dynamic impedance element for a battery feed circuit
US4685130A (en) * 1985-08-29 1987-08-04 Gte Communication Systems Corporation Subscriber line circuit having an improved loop current supply circuit
CA1257027A (en) * 1987-03-10 1989-07-04 Rolf Meier Compensation circuit for use with an integrating amplifier
CA1268873A (en) * 1987-09-22 1990-05-08 Mihail Stefan Augustin Traian Moisin Line interface circuit
JP2881781B2 (ja) * 1988-11-08 1999-04-12 ローム 株式会社 Ｉｃ化されたダイヤラ回路
US5768367A (en) * 1996-10-17 1998-06-16 Northern Telecom Limited Method and apparatus for removing FSK in-band signaling
US6362467B1 (en) * 1999-10-21 2002-03-26 Infineon Technologies North America Corp. Fast-switching comparator with hysteresis
US7821758B1 (en) * 2006-11-16 2010-10-26 Adtran, Inc. Systems and methods for reducing intermodulation distortion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL289634A (es) * 1962-03-01
DE1487984A1 (de) * 1966-07-14 1969-03-13 Standard Elek K Lorenz Ag Gleichstromsignalverfahren in Nachrichtenvermittlungsanlagen
US3821486A (en) * 1973-06-22 1974-06-28 Bell Telephone Labor Inc Bridge type supervisory detector with reduced breakdown voltage requirements
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4315106A (en) * 1979-11-28 1982-02-09 International Telephone And Telegraph Corporation Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
US4317963A (en) * 1980-09-22 1982-03-02 International Telephone And Telegraph Corporation Subscriber line interface circuit utilizing impedance synthesizer and shared voltage source for loop current regulation control
US4419542A (en) * 1982-05-17 1983-12-06 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4514595A (en) * 1982-06-10 1985-04-30 Northern Telecom Limited Active impedance line feed circuit
SE433284B (sv) * 1982-09-17 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat

Also Published As

Publication number Publication date
EP0168318A2 (en) 1986-01-15
US4581487A (en) 1986-04-08
ATE50103T1 (de) 1990-02-15
EP0168318A3 (en) 1986-12-30
EP0168318B1 (en) 1990-01-31
ES545071A0 (es) 1986-10-01
DE3575832D1 (de) 1990-03-08

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