FR2422300B1 - - Google Patents
Info
- Publication number
- FR2422300B1 FR2422300B1 FR7809743A FR7809743A FR2422300B1 FR 2422300 B1 FR2422300 B1 FR 2422300B1 FR 7809743 A FR7809743 A FR 7809743A FR 7809743 A FR7809743 A FR 7809743A FR 2422300 B1 FR2422300 B1 FR 2422300B1
- Authority
- FR
- France
- 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
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7809743A FR2422300A1 (fr) | 1978-04-03 | 1978-04-03 | Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne |
| CA324,457A CA1132275A (en) | 1978-04-03 | 1979-03-29 | Subscriber's connecting network comprising a symmetrical power amplifier for feeding a subscriber's line |
| CH294679A CH646560A5 (de) | 1978-04-03 | 1979-03-29 | Teilnehmerschaltung mit einem symmetrischen leistungsverstaerker fuer die speisung einer teilnehmerleitung. |
| NLAANVRAGE7902478,A NL177459C (nl) | 1978-04-03 | 1979-03-30 | Abonneelijnketen omvattende een symmetrische versterker. |
| AU45622/79A AU525957B2 (en) | 1978-04-03 | 1979-03-30 | Subscriber:s connecting network |
| SE7902832A SE434690B (sv) | 1978-04-03 | 1979-03-30 | Abonnentanslutningskrets innefattande en symmetrisk effektforsterkare for matning av en abonnentledning |
| GB7911212A GB2018093B (en) | 1978-04-03 | 1979-03-30 | Telephone subscriber's line circuit |
| DE2913115A DE2913115C3 (de) | 1978-04-03 | 1979-04-02 | Teilnehmerschaltung mit einem symmetrischen Leistungsverstärker für die Speisung einer Teilnehmerleitung |
| JP3941379A JPS5537090A (en) | 1978-04-03 | 1979-04-03 | Substriber*s connecting circuit network |
| BE0/194394A BE875306A (fr) | 1978-04-03 | 1979-04-03 | Verbindingsnetwerk met een symmetrische vermogensversterker voor het voeden van een abonneelijn |
| US06/175,810 US4321430A (en) | 1978-04-03 | 1980-08-06 | Subscriber's connecting network comprising a symmetrical power amplifier for feeding a subscriber's line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7809743A FR2422300A1 (fr) | 1978-04-03 | 1978-04-03 | Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2422300A1 FR2422300A1 (fr) | 1979-11-02 |
| FR2422300B1 true FR2422300B1 (US08063081-20111122-C00044.png) | 1980-09-19 |
Family
ID=9206577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7809743A Granted FR2422300A1 (fr) | 1978-04-03 | 1978-04-03 | Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne |
Country Status (11)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481035A1 (fr) * | 1980-04-18 | 1981-10-23 | Trt Telecom Radio Electr | Perfectionnements aux joncteurs d'abonne electroniques |
| JPS5710598A (en) * | 1980-06-20 | 1982-01-20 | Sony Corp | Transmitting circuit of microphone output |
| IT1211072B (it) * | 1981-06-30 | 1989-09-29 | Ates Componenti Elettron | Circuito raddrizzatore a ponte di transistori per uso telefonico. |
| JPS58186985U (ja) * | 1982-06-09 | 1983-12-12 | 本田技研工業株式会社 | 自動二輪車のシ−ト取付構造 |
| DE3237681C2 (de) * | 1982-10-12 | 1986-03-27 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Speiseschaltung für einen veränderlichen Verbraucherwiderstand und mit unterschiedlich wirkendem Ausgangswiderstand |
| US4539438A (en) * | 1983-08-22 | 1985-09-03 | Northern Telecom Limited | Active impedance transformer assisted line feed circuit with supervision filtering |
| GB2358989B (en) * | 2000-02-03 | 2004-01-21 | Lake Electronic Tech | A circuit for developing an ac ringing voltage from a dc voltage supply |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2372554A1 (fr) * | 1976-11-25 | 1978-06-23 | Jeumont Schneider | Equipement de ligne d'abonne pour central telephonique |
| IT1079588B (it) * | 1977-02-14 | 1985-05-13 | Sits Soc It Telecom Siemens | Generatore di chiamata statico per sistemi di telecomunicazioni |
| US4087647A (en) * | 1977-05-25 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Circuit for supplying direct current to telephone station sets |
| US4211896A (en) * | 1977-10-17 | 1980-07-08 | Telecommunications Radioelectrique Et Telephoniques T.R.T. | Subscriber's circuit with a symmetrical amplifier |
-
1978
- 1978-04-03 FR FR7809743A patent/FR2422300A1/fr active Granted
-
1979
- 1979-03-29 CA CA324,457A patent/CA1132275A/en not_active Expired
- 1979-03-29 CH CH294679A patent/CH646560A5/de not_active IP Right Cessation
- 1979-03-30 GB GB7911212A patent/GB2018093B/en not_active Expired
- 1979-03-30 AU AU45622/79A patent/AU525957B2/en not_active Ceased
- 1979-03-30 NL NLAANVRAGE7902478,A patent/NL177459C/xx not_active IP Right Cessation
- 1979-03-30 SE SE7902832A patent/SE434690B/sv not_active IP Right Cessation
- 1979-04-02 DE DE2913115A patent/DE2913115C3/de not_active Expired
- 1979-04-03 JP JP3941379A patent/JPS5537090A/ja active Granted
- 1979-04-03 BE BE0/194394A patent/BE875306A/xx not_active IP Right Cessation
-
1980
- 1980-08-06 US US06/175,810 patent/US4321430A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE434690B (sv) | 1984-08-06 |
| SE7902832L (sv) | 1979-10-04 |
| CA1132275A (en) | 1982-09-21 |
| DE2913115A1 (de) | 1979-10-04 |
| CH646560A5 (de) | 1984-11-30 |
| JPS5537090A (en) | 1980-03-14 |
| BE875306A (fr) | 1979-10-03 |
| GB2018093A (en) | 1979-10-10 |
| NL177459B (nl) | 1985-04-16 |
| AU525957B2 (en) | 1982-12-09 |
| FR2422300A1 (fr) | 1979-11-02 |
| AU4562279A (en) | 1979-10-11 |
| GB2018093B (en) | 1982-06-23 |
| NL7902478A (nl) | 1979-10-05 |
| US4321430A (en) | 1982-03-23 |
| DE2913115C3 (de) | 1981-07-30 |
| JPS5747584B2 (US08063081-20111122-C00044.png) | 1982-10-09 |
| DE2913115B2 (de) | 1980-10-02 |
| NL177459C (nl) | 1985-09-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DR | Decision of the appeal court due to an appeal at law against decisions of the director of the inpi, except decision of lapse | ||
| TP | Transmission of property | ||
| ST | Notification of lapse |