FR2354665A1 - Differentiel de couplage sans transformateur de circuits deux fils et quatre fils - Google Patents
Differentiel de couplage sans transformateur de circuits deux fils et quatre filsInfo
- Publication number
- FR2354665A1 FR2354665A1 FR7717393A FR7717393A FR2354665A1 FR 2354665 A1 FR2354665 A1 FR 2354665A1 FR 7717393 A FR7717393 A FR 7717393A FR 7717393 A FR7717393 A FR 7717393A FR 2354665 A1 FR2354665 A1 FR 2354665A1
- Authority
- FR
- France
- Prior art keywords
- wire
- transformer
- coupling
- circuits
- communication link
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (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)
Abstract
L'invention concerne les circuits différentiels électroniques. Elle se rapporte à un circuit différentiel électronique destiné au couplage, aux bornes 114 et 115, d'une liaison de communication à deux fils, avec une liaison de communication à quatre fils, sans couplage par transformateur. Le signal entrant à fréquence acoustique est amplifié et transforme en deux composantes équilibrées, par des dispositifs complémentaires d'injection de signaux. Chaque composante équilibrée est injectée en série avec un potentiel continu de batterie, par des amplificateurs de courant Application aux différentiels reliés aux lignes bifilaires d'abonnés téléphoniques.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/694,027 US4041252A (en) | 1976-06-07 | 1976-06-07 | Transformerless two-wire/four-wire hybrid with DC sourcing capability |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2354665A1 true FR2354665A1 (fr) | 1978-01-06 |
FR2354665B3 FR2354665B3 (fr) | 1980-03-07 |
Family
ID=24787114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7717393A Granted FR2354665A1 (fr) | 1976-06-07 | 1977-06-07 | Differentiel de couplage sans transformateur de circuits deux fils et quatre fils |
Country Status (3)
Country | Link |
---|---|
US (1) | US4041252A (fr) |
CA (1) | CA1084185A (fr) |
FR (1) | FR2354665A1 (fr) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064377A (en) * | 1976-03-11 | 1977-12-20 | Wescom Switching, Inc. | Electronic hybrid and hybrid repeater |
US4203012A (en) * | 1977-07-14 | 1980-05-13 | Boxall Frank S | Hybrid circuit using current mirror circuits |
US4203009A (en) * | 1977-08-17 | 1980-05-13 | The Post Office | Unbalanced/balanced converter circuits |
FR2404344A1 (fr) * | 1977-09-27 | 1979-04-20 | Jeumont Schneider | Equipement electronique d'abonne, a circuit de conversion deux fils-quatre fils, pour central telephonique |
US4142075A (en) * | 1977-10-11 | 1979-02-27 | Burr-Brown Research Corporation | Interface circuit and method for telephone extension lines |
FR2437757A2 (fr) * | 1978-06-26 | 1980-04-25 | Trt Telecom Radio Electr | Joncteur d'abonne destine a assurer un couplage en deux fils ou quatre fils avec un central telephonique |
FR2437116A1 (fr) * | 1978-09-19 | 1980-04-18 | Thomson Ericsson Telephones So | Dispositif de separation et d'equilibrage pour autocommutateurs telephoniques |
NL7810086A (nl) * | 1978-10-06 | 1980-04-09 | Philips Nv | Voedingsbrug voor een abonneestroomloop. |
US4278847A (en) * | 1979-02-26 | 1981-07-14 | Tii Corporation | Transformerless hybrid circuits |
US4433215A (en) * | 1979-02-26 | 1984-02-21 | Tii Corporation | Solid state hybrid circuits |
US4272656A (en) * | 1979-04-05 | 1981-06-09 | Precision Monolithics, Inc. | Quasi-resistive battery feed for telephone circuits |
NL7903664A (nl) * | 1979-05-10 | 1980-11-12 | Philips Nv | Lijncircuit. |
NL7903662A (nl) * | 1979-05-10 | 1980-11-12 | Philips Nv | Lijncircuit. |
NL7904159A (nl) * | 1979-05-28 | 1980-12-02 | Philips Nv | Inrichting voor het toevoeren van signalen aan een telefoonlijn. |
US4375015A (en) * | 1979-06-04 | 1983-02-22 | Tellabs, Inc. | Improved electronic hybrid circuit |
US4331842A (en) * | 1980-02-11 | 1982-05-25 | Reliance Electric Company | Voice frequency repeater and term sets and other circuits therefor |
FR2478908B1 (fr) * | 1980-03-21 | 1984-08-03 | Thomson Csf Mat Tel | |
DE3108647C2 (de) * | 1980-04-04 | 1983-01-20 | Siemens AG, 1000 Berlin und 8000 München | Übertragerlose Gabelschaltung für die Teilnehmerschaltung einer Fernmelde-, insbesondere Fernsprechvermittlungsanlage |
DE3014187C2 (de) * | 1980-04-14 | 1983-11-17 | Nixdorf Computer Ag, 4790 Paderborn | Schaltungsanordnung zum zweidrähtigen Anschluß eines Fernsprechteilnehmers an je eine Leitung für angehende und ankommende Signale |
US4322586A (en) * | 1980-11-13 | 1982-03-30 | Northern Telecom Limited | Transformerless line interface circuit |
CA1154185A (fr) * | 1981-01-23 | 1983-09-20 | Patrick R. Beirne | Circuit d'interface pour ligne d'abonne |
DE3142201C2 (de) * | 1981-01-23 | 1984-02-23 | Mitel Corp., Kanata, Ontario | Gabelschaltung für eine Fernmelde-, insbesondere Fernsprechanlage |
US4388500A (en) * | 1981-02-27 | 1983-06-14 | Wescom, Inc. | Electronic hybrid |
CA1177985A (fr) * | 1981-09-24 | 1984-11-13 | Don W. Zobel | Circuit de raccordement electronique |
US4431874A (en) * | 1981-09-24 | 1984-02-14 | Motorola, Inc. | Balanced current multiplier circuit for a subscriber loop interface circuit |
US4445002A (en) * | 1981-12-28 | 1984-04-24 | Mostek Corporation | Sidetone circuit |
US4554416A (en) * | 1983-03-08 | 1985-11-19 | The United States Of America As Represented By The Secretary Of The Air Force | Low voltage two wire to four wire telephone circuit converter apparatus |
US4558186A (en) * | 1983-09-06 | 1985-12-10 | Gte Automatic Electric Incorporated | Single power supply battery feed circuit |
FR2564678B1 (fr) * | 1984-05-18 | 1986-09-12 | Thomson Csf Mat Tel | Interface de liaison de circuit d'abonne pour autocommutateur telephonique |
JP2912388B2 (ja) * | 1989-08-15 | 1999-06-28 | 沖電気工業株式会社 | 加入者回路 |
US5953412A (en) * | 1996-09-04 | 1999-09-14 | Teltrend, Inc. | Method and apparatus for controlling line conditioner equalizer |
US6111949A (en) * | 1996-09-04 | 2000-08-29 | Teltrend, Inc. | Method of rapid automatic hybrid balancing |
US5974137A (en) * | 1996-09-04 | 1999-10-26 | Teltrend, Inc. | AGC amplifier for two-wire line conditioner |
US5963638A (en) | 1996-09-04 | 1999-10-05 | Teltrend, Inc. | Adjustable hybrid having improved biasing configuration |
FI104134B (fi) * | 1997-07-31 | 1999-11-15 | Nokia Networks Oy | Datan- ja virransyötön toteuttava kaapeliliitäntä |
DE19807074A1 (de) | 1998-02-20 | 1999-09-02 | Philips Patentverwaltung | Gabelverstärker |
US6792105B1 (en) * | 2000-10-31 | 2004-09-14 | 3Com Corporation | Current-mode differential active hybrid circuit |
US8385538B2 (en) * | 2008-12-10 | 2013-02-26 | Utc Fire & Security Americas Corporation, Inc. | Method, system, and apparatus for a differential transformer-free hybrid circuit |
US8742814B2 (en) | 2009-07-15 | 2014-06-03 | Yehuda Binder | Sequentially operated modules |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2157150A5 (fr) * | 1971-10-20 | 1973-06-01 | Labo Cent Telecommunicat | |
FR2160308B1 (fr) * | 1971-11-19 | 1977-01-28 | Labo Cent Telecommunicat | |
US3973089A (en) * | 1973-10-29 | 1976-08-03 | General Electric Company | Adaptive hybrid circuit |
US3970805A (en) * | 1974-02-22 | 1976-07-20 | Gte Automatic Electric (Canada) Limited | Active hybrid circuit |
-
1976
- 1976-06-07 US US05/694,027 patent/US4041252A/en not_active Expired - Lifetime
-
1977
- 1977-05-31 CA CA279,520A patent/CA1084185A/fr not_active Expired
- 1977-06-07 FR FR7717393A patent/FR2354665A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
US4041252A (en) | 1977-08-09 |
CA1084185A (fr) | 1980-08-19 |
FR2354665B3 (fr) | 1980-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |