ES8703076A1 - Un circuito de linea para la conexion de un abonado telefo- nico - Google Patents
Un circuito de linea para la conexion de un abonado telefo- nicoInfo
- Publication number
- ES8703076A1 ES8703076A1 ES545685A ES545685A ES8703076A1 ES 8703076 A1 ES8703076 A1 ES 8703076A1 ES 545685 A ES545685 A ES 545685A ES 545685 A ES545685 A ES 545685A ES 8703076 A1 ES8703076 A1 ES 8703076A1
- Authority
- ES
- Spain
- Prior art keywords
- coupled
- subscriber
- current source
- terminals
- differential amplifier
- 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
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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephone Function (AREA)
Abstract
CIRCUITO DE LINEA PARA LA CONEXION DE UN ABONADO TELEFONICO. LA CONEXION ES DE IMPEDANCIA EQUILIBRADA CON UNA LINEA TRANSMISORA Y OTRA RECEPTORA, AMBAS UNIDIRECCIONALES. EL CIRCUITO DE LINEA COMPRENDE UN CIRCUITO DE ALIMENTACION, UN AMPLIFICADOR DIFERENCIAL EN CUYA ENTRADA ESTAN PRESENTES LAS SEÑALES PROCEDENTES DE LA LINEA BIDIRECCIONAL A DOS HILOS, Y CUYA SALIDA SE ENCUENTRA CONECTADA A LA LINEA TRANSMISORA UNIDIRECCIONAL. UNA FUENTE DE CORRIENTE DE SALIDA CONTROLADA POR LA LINEA RECEPTORA UNIDIRECCIONAL Y QUE SE SUPERPONE A LA CORRIENTE CONSTANTE PROCEDENTE DEL CIRCUITO DE ALIMENTACION. UN CANAL DE REALIMENTACION CONECTA LA SALIDA DEL AMPLIFICADOR DIFERENCIAL CON LA ENTRADA DE LA FUENTE DE CORRIENTE CONTROLADA. LA DISPOSICION INCLUYE CONVERTIDORES CORRIENTE/VOLTAJE Y VOLTAJE/CORRIENTE. SE INTERPONE UNA IMPEDANCIA ENTRE LA LINEA RECEPTORA Y LA FUENTE DE CORRIENTE CONTROLADA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843428106 DE3428106A1 (de) | 1984-07-30 | 1984-07-30 | Teilnehmeranschlussschaltung |
Publications (2)
Publication Number | Publication Date |
---|---|
ES545685A0 ES545685A0 (es) | 1986-12-01 |
ES8703076A1 true ES8703076A1 (es) | 1986-12-01 |
Family
ID=6241952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES545685A Expired ES8703076A1 (es) | 1984-07-30 | 1985-07-30 | Un circuito de linea para la conexion de un abonado telefo- nico |
Country Status (7)
Country | Link |
---|---|
US (1) | US4789999A (es) |
EP (1) | EP0171692B1 (es) |
JP (1) | JPS6187436A (es) |
AT (1) | ATE47945T1 (es) |
BE (1) | BE902986A (es) |
DE (2) | DE3428106A1 (es) |
ES (1) | ES8703076A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3640127A1 (de) * | 1986-11-25 | 1988-06-01 | Standard Elektrik Lorenz Ag | Elektronische gabelschaltung |
JP2645022B2 (ja) * | 1987-08-21 | 1997-08-25 | 株式会社東芝 | 加入者回路 |
DE3942757A1 (de) * | 1989-12-23 | 1991-06-27 | Standard Elektrik Lorenz Ag | Summierverstaerker mit einem komplexen gewichtungsfaktor und schnittstelle mit einem solchen summierverstaerker |
DE69835402T2 (de) * | 1997-02-07 | 2007-03-08 | Koninklijke Philips Electronics N.V. | Schaltung für ein telekommunikationsgerät |
JP2005012586A (ja) * | 2003-06-20 | 2005-01-13 | Nec Electronics Corp | データ転送装置 |
US7957522B2 (en) * | 2006-03-06 | 2011-06-07 | Winbond Electronics Corporation | Programmable plain old telephone line impedance matching circuits |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2160308B1 (es) * | 1971-11-19 | 1977-01-28 | Labo Cent Telecommunicat | |
US3868581A (en) * | 1973-07-20 | 1975-02-25 | Rca Corp | Current amplifier |
US3970805A (en) * | 1974-02-22 | 1976-07-20 | Gte Automatic Electric (Canada) Limited | Active hybrid circuit |
US4064377A (en) * | 1976-03-11 | 1977-12-20 | Wescom Switching, Inc. | Electronic hybrid and hybrid repeater |
DE2838038A1 (de) * | 1978-08-31 | 1980-03-13 | Siemens Ag | Einspeiseeinheit mit hohem ausgangsseitigen innenwiderstand |
US4278847A (en) * | 1979-02-26 | 1981-07-14 | Tii Corporation | Transformerless hybrid circuits |
FR2462070A1 (fr) * | 1979-07-17 | 1981-02-06 | Cit Alcatel | Dispositif d'alimentation d'un poste d'abonne |
JPS5737965A (en) * | 1980-08-15 | 1982-03-02 | Nec Corp | Two-terminal circuit |
US4387273A (en) * | 1980-08-25 | 1983-06-07 | International Telephone And Telegraph Corporation | Subscriber line interface circuit with impedance synthesizer |
US4351060A (en) * | 1980-10-23 | 1982-09-21 | International Telephone And Telegraph Corporation | Automatic, digitally synthesized matching line terminating impedance |
US4476350A (en) * | 1981-02-17 | 1984-10-09 | Bell Telephone Laboratories, Incorporated | Battery feed circuit |
SE433284B (sv) * | 1982-09-17 | 1984-05-14 | Ericsson Telefon Ab L M | Anordning for strommatning av en abonnentapparat |
SE433285B (sv) * | 1982-09-22 | 1984-05-14 | Ericsson Telefon Ab L M | Anordning for strommatning av en abonnentapparat |
DE3237681C2 (de) * | 1982-10-12 | 1986-03-27 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Speiseschaltung für einen veränderlichen Verbraucherwiderstand und mit unterschiedlich wirkendem Ausgangswiderstand |
DE3246144C2 (de) * | 1982-12-14 | 1986-09-25 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Stromkonstanthaltung |
US4600811A (en) * | 1982-12-28 | 1986-07-15 | Nec Corporation | Subscriber line interface circuit |
CA1200938A (en) * | 1983-09-30 | 1986-02-18 | Mitel Corporation | Voice and data interface circuit |
US4571460A (en) * | 1984-03-12 | 1986-02-18 | Northern Telecom Limited | Active impedance line feed circuit with improved ground fault protection |
CA1233580A (en) * | 1984-05-26 | 1988-03-01 | Kenji Takato | Battery feed circuit for subscriber line |
-
1984
- 1984-07-30 DE DE19843428106 patent/DE3428106A1/de not_active Withdrawn
-
1985
- 1985-07-27 DE DE8585109452T patent/DE3574214D1/de not_active Expired
- 1985-07-27 AT AT85109452T patent/ATE47945T1/de not_active IP Right Cessation
- 1985-07-27 EP EP85109452A patent/EP0171692B1/de not_active Expired
- 1985-07-29 US US06/760,199 patent/US4789999A/en not_active Expired - Fee Related
- 1985-07-29 JP JP60166042A patent/JPS6187436A/ja active Granted
- 1985-07-30 BE BE2/60757A patent/BE902986A/fr not_active IP Right Cessation
- 1985-07-30 ES ES545685A patent/ES8703076A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE902986A (fr) | 1986-01-30 |
US4789999A (en) | 1988-12-06 |
ATE47945T1 (de) | 1989-11-15 |
JPS6187436A (ja) | 1986-05-02 |
JPH03816B2 (es) | 1991-01-09 |
EP0171692A2 (de) | 1986-02-19 |
DE3574214D1 (en) | 1989-12-14 |
DE3428106A1 (de) | 1986-02-06 |
ES545685A0 (es) | 1986-12-01 |
EP0171692A3 (en) | 1986-12-30 |
EP0171692B1 (de) | 1989-11-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19981103 |