FR2456430A1 - Terminal de circuit a quatre fils - Google Patents
Terminal de circuit a quatre filsInfo
- Publication number
- FR2456430A1 FR2456430A1 FR8010457A FR8010457A FR2456430A1 FR 2456430 A1 FR2456430 A1 FR 2456430A1 FR 8010457 A FR8010457 A FR 8010457A FR 8010457 A FR8010457 A FR 8010457A FR 2456430 A1 FR2456430 A1 FR 2456430A1
- Authority
- FR
- France
- Prior art keywords
- transformer
- wire
- gate
- operational amplifier
- circuit terminal
- 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
- H04B1/581—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 a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
TERMINAL DE CIRCUIT A QUATRE FILS POUR LE COUPLAGE D'UNE PORTE A DEUX FILS AVEC LA PORTE D'EMISSION ET LA PORTE DE RECEPTION D'UNE VOIE DE TRANSMISSION A QUTRE FILS, COMPORTANT UN TRANSFORMATEUR. LES TRANSFORMATEURS HABITUELS SONT TRES ENCOMBRANTS. DANS LA DEMANDE DE BREVET EST DECRITE UNE COMBINAISON D'UN AMPLIFICATEUR OPERATIONNEL ET D'UN TRANSFORMATEUR (PEU ENCOMBRANT). L'AMPLIFICATEUR OPERATIONNEL EST CONNECTE EN REACTION PAR L'INTERMEDIAIRE DU TRANSFORMATEUR. LA PORTE A DEUX FILS EST CONNECTEE A UN ENROULEMENT DU TRANSFORMATEUR. LA PORTE DE RECEPTION EST CONNECTEE A UNE ENTREE DE L'AMPLIFICATEUR OPERATIONNEL. PAR UNE COMBINAISON D'UNE IMPEDANCE D'EQUILIBRAGE ET D'UN ENROULEMENT, ON OBTIENT UNE PORTE D'EMISSION DECOUPLEE. APPLICATION AUX CIRCUITS DE LIGNES DE CENTRAUX TELEPHONIQUES AUTOMATIQUES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7903709A NL7903709A (nl) | 1979-05-11 | 1979-05-11 | Vorkschakeling. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2456430A1 true FR2456430A1 (fr) | 1980-12-05 |
FR2456430B1 FR2456430B1 (fr) | 1983-05-06 |
Family
ID=19833158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8010457A Granted FR2456430A1 (fr) | 1979-05-11 | 1980-05-09 | Terminal de circuit a quatre fils |
Country Status (11)
Country | Link |
---|---|
US (1) | US4346266A (fr) |
JP (1) | JPS55158742A (fr) |
AU (1) | AU530393B2 (fr) |
BE (1) | BE883232A (fr) |
CA (1) | CA1155937A (fr) |
DE (1) | DE3017568C2 (fr) |
FR (1) | FR2456430A1 (fr) |
GB (1) | GB2050772B (fr) |
IT (1) | IT1194651B (fr) |
NL (1) | NL7903709A (fr) |
SE (1) | SE441560B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143616A2 (fr) * | 1983-11-29 | 1985-06-05 | Northern Telecom Limited | Circuit hybride |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3230886A1 (de) * | 1982-08-19 | 1984-02-23 | Siemens AG, 1000 Berlin und 8000 München | Aktive gabelschaltung mit geringer verlustleistung |
US4615044A (en) * | 1983-09-29 | 1986-09-30 | Killion William D | Interface between video cassette player and television receiver |
JPH066636Y2 (ja) * | 1984-02-03 | 1994-02-16 | 三洋電機株式会社 | 電源搬送式リモコン装置 |
CA1233531A (fr) * | 1985-09-16 | 1988-03-01 | Mumtaz B. Gawargy | Circuit electronique hybride |
JPS6390091U (fr) * | 1986-12-01 | 1988-06-11 | ||
JPH01219386A (ja) * | 1988-02-26 | 1989-09-01 | Matsushita Refrig Co Ltd | 空気調和機用ドレーンポンプ |
JPH0823356B2 (ja) * | 1988-12-16 | 1996-03-06 | 株式会社日立製作所 | 電気洗濯機用排水ポンプ |
DE4142299C2 (de) * | 1991-12-20 | 1998-08-27 | Kommunikations Elektronik | Gabelschaltung zur Verbindung einer Zweidrahtleitung mit einer Vierdrahtleitung |
US5369355A (en) * | 1992-11-12 | 1994-11-29 | B/E Aerospace | Compensation circuit for transformer linearization |
ATE343872T1 (de) * | 2001-03-15 | 2006-11-15 | Cit Alcatel | Hybridschaltung für breitbandmodem |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3480742A (en) * | 1967-03-31 | 1969-11-25 | Bell Telephone Labor Inc | Hybrid circuit |
DE2137201A1 (de) * | 1971-07-24 | 1973-02-01 | Licentia Gmbh | Gabelschaltung fuer die verzweigung einer gemeinsamen leitung auf eine ankommende und eine abgehende leitung, wobei die ankommende und die abgehende leitung an eine gemeinsame bezugsspannung angeschlossen sind, insbesondere fuer personenrufanlagen |
US3751602A (en) * | 1971-08-13 | 1973-08-07 | Bell Telephone Labor Inc | Loudspeaking telephone |
US3875350A (en) * | 1973-11-05 | 1975-04-01 | Gte Automatic Electric Lab Inc | Self-balancing hybrid circuit |
US4150260A (en) * | 1975-06-18 | 1979-04-17 | Hitachi, Ltd. | Subscriber's circuit for four-wire-system local switch |
-
1979
- 1979-05-11 NL NL7903709A patent/NL7903709A/nl not_active Application Discontinuation
-
1980
- 1980-04-21 US US06/142,305 patent/US4346266A/en not_active Expired - Lifetime
- 1980-05-01 CA CA000351109A patent/CA1155937A/fr not_active Expired
- 1980-05-02 GB GB8014762A patent/GB2050772B/en not_active Expired
- 1980-05-06 AU AU58119/80A patent/AU530393B2/en not_active Ceased
- 1980-05-08 IT IT21901/80A patent/IT1194651B/it active
- 1980-05-08 SE SE8003447A patent/SE441560B/sv not_active IP Right Cessation
- 1980-05-08 DE DE3017568A patent/DE3017568C2/de not_active Expired
- 1980-05-09 FR FR8010457A patent/FR2456430A1/fr active Granted
- 1980-05-09 BE BE0/200565A patent/BE883232A/fr not_active IP Right Cessation
- 1980-05-10 JP JP6217080A patent/JPS55158742A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143616A2 (fr) * | 1983-11-29 | 1985-06-05 | Northern Telecom Limited | Circuit hybride |
EP0143616A3 (fr) * | 1983-11-29 | 1986-06-04 | Northern Telecom Limited | Circuit hybride |
Also Published As
Publication number | Publication date |
---|---|
CA1155937A (fr) | 1983-10-25 |
IT8021901A0 (it) | 1980-05-08 |
JPS55158742A (en) | 1980-12-10 |
SE441560B (sv) | 1985-10-14 |
GB2050772B (en) | 1983-06-08 |
NL7903709A (nl) | 1980-11-13 |
JPS6342890B2 (fr) | 1988-08-26 |
FR2456430B1 (fr) | 1983-05-06 |
AU530393B2 (en) | 1983-07-14 |
GB2050772A (en) | 1981-01-07 |
SE8003447L (sv) | 1980-11-12 |
BE883232A (fr) | 1980-11-10 |
US4346266A (en) | 1982-08-24 |
AU5811980A (en) | 1980-11-13 |
DE3017568C2 (de) | 1984-10-31 |
IT1194651B (it) | 1988-09-22 |
DE3017568A1 (de) | 1980-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |