SE436961B - Transmissionsbrygga for en abonnentkrets - Google Patents
Transmissionsbrygga for en abonnentkretsInfo
- Publication number
- SE436961B SE436961B SE7908193A SE7908193A SE436961B SE 436961 B SE436961 B SE 436961B SE 7908193 A SE7908193 A SE 7908193A SE 7908193 A SE7908193 A SE 7908193A SE 436961 B SE436961 B SE 436961B
- Authority
- SE
- Sweden
- Prior art keywords
- transmission bridge
- subscription
- circuit
- subscription circuit
- bridge
- Prior art date
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
- H04M19/008—Using DC/DC converters
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7810086A NL7810086A (nl) | 1978-10-06 | 1978-10-06 | Voedingsbrug voor een abonneestroomloop. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7908193L SE7908193L (sv) | 1980-04-07 |
| SE436961B true SE436961B (sv) | 1985-01-28 |
Family
ID=19831672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7908193A SE436961B (sv) | 1978-10-06 | 1979-10-03 | Transmissionsbrygga for en abonnentkrets |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4287393A (fr) |
| JP (1) | JPS5831789B2 (fr) |
| AU (1) | AU528288B2 (fr) |
| BE (1) | BE879204A (fr) |
| BR (1) | BR7906373A (fr) |
| CA (1) | CA1138139A (fr) |
| CH (1) | CH646827A5 (fr) |
| DE (1) | DE2940025C3 (fr) |
| DK (1) | DK413079A (fr) |
| FR (1) | FR2438394A1 (fr) |
| GB (1) | GB2032733B (fr) |
| IT (1) | IT1193352B (fr) |
| NL (1) | NL7810086A (fr) |
| SE (1) | SE436961B (fr) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2491704B1 (fr) * | 1980-10-03 | 1985-06-07 | Constr Telephoniques | Circuit d'alimentation d'une ligne telephonique |
| DE3116783C2 (de) * | 1981-04-28 | 1983-09-01 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung für eine Teilnehmeranschlußschaltung für Fernsprechanlagen |
| US4431868A (en) * | 1981-07-09 | 1984-02-14 | International Telephone And Telegraph Corporation | Solid state telephone line interface circuit with ringing capability |
| NL8103572A (nl) * | 1981-07-29 | 1983-02-16 | Philips Nv | Drijverschakeling. |
| DE3473803D1 (en) * | 1984-06-20 | 1988-10-06 | Ibm | Detection circuit for current varations |
| JPS61154347A (ja) * | 1984-12-27 | 1986-07-14 | Fujitsu Ltd | 交換機の給電回路 |
| AT386307B (de) * | 1986-05-23 | 1988-08-10 | Siemens Ag Oesterreich | Fernsprechteilnehmerschaltung |
| US4852160A (en) * | 1987-03-03 | 1989-07-25 | Kiko Frederick J | Channel unit interface circuit |
| US5586181A (en) * | 1990-09-04 | 1996-12-17 | Tollgrade Communications, Inc. | Metallic channel unit network |
| US5202919A (en) * | 1990-09-04 | 1993-04-13 | Tollgrade Communications, Inc. | Metallic channel unit network |
| US5457743A (en) * | 1990-09-04 | 1995-10-10 | Tollgrade Communications, Inc. | Metallic channel unit network |
| US5557672A (en) * | 1993-03-10 | 1996-09-17 | Antec Corporation | Channel interface unit |
| DE19733250A1 (de) * | 1997-08-01 | 1999-02-04 | Deutsche Telephonwerk Kabel | Schaltungsanordnung für eine Netzabschlußeinheit |
| CN102474235B (zh) * | 2009-11-02 | 2015-06-10 | 松江Elmec株式会社 | 共模滤波器 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH586984A5 (fr) * | 1974-12-23 | 1977-04-15 | Ibm | |
| GB1563802A (en) * | 1975-11-10 | 1980-04-02 | Post Office | Electronic current feed circuit |
| US4007335A (en) * | 1975-11-12 | 1977-02-08 | Bell Telephone Laboratories, Incorporated | Telephone line battery feed circuit |
| US4041252A (en) * | 1976-06-07 | 1977-08-09 | North Electric Company | Transformerless two-wire/four-wire hybrid with DC sourcing capability |
| FR2363952A1 (fr) * | 1976-09-03 | 1978-03-31 | Thomson Csf | Circuit de ligne telephonique |
| DE2655005C3 (de) * | 1976-12-02 | 1980-04-17 | Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin | Schaltungsanordnung für eine elektronische Teilnehmerspeisung |
| FR2414832A1 (fr) * | 1978-01-13 | 1979-08-10 | Labo Cent Telecommunicat | Pont d'alimentation pour ligne telephonique |
| GB2013000A (en) * | 1978-01-20 | 1979-08-01 | Hitachi Ltd Dc | D.C. magnetic field cancellation circuit |
-
1978
- 1978-10-06 NL NL7810086A patent/NL7810086A/nl not_active Application Discontinuation
-
1979
- 1979-09-20 US US06/077,470 patent/US4287393A/en not_active Expired - Lifetime
- 1979-09-27 FR FR7924099A patent/FR2438394A1/fr active Granted
- 1979-10-02 DK DK413079A patent/DK413079A/da not_active Application Discontinuation
- 1979-10-03 AU AU51415/79A patent/AU528288B2/en not_active Ceased
- 1979-10-03 IT IT26247/79A patent/IT1193352B/it active
- 1979-10-03 DE DE2940025A patent/DE2940025C3/de not_active Expired
- 1979-10-03 CH CH892179A patent/CH646827A5/de not_active IP Right Cessation
- 1979-10-03 BR BR7906373A patent/BR7906373A/pt unknown
- 1979-10-03 CA CA000336884A patent/CA1138139A/fr not_active Expired
- 1979-10-03 SE SE7908193A patent/SE436961B/xx not_active IP Right Cessation
- 1979-10-03 GB GB7903422A patent/GB2032733B/en not_active Expired
- 1979-10-04 BE BE0/197477A patent/BE879204A/fr not_active IP Right Cessation
- 1979-10-04 JP JP54127439A patent/JPS5831789B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE879204A (fr) | 1980-04-04 |
| FR2438394B1 (fr) | 1983-02-18 |
| JPS5831789B2 (ja) | 1983-07-08 |
| CA1138139A (fr) | 1982-12-21 |
| BR7906373A (pt) | 1980-06-24 |
| CH646827A5 (de) | 1984-12-14 |
| US4287393A (en) | 1981-09-01 |
| DE2940025A1 (de) | 1980-04-10 |
| DK413079A (da) | 1980-04-07 |
| AU528288B2 (en) | 1983-04-21 |
| IT1193352B (it) | 1988-06-15 |
| IT7926247A0 (it) | 1979-10-03 |
| GB2032733A (en) | 1980-05-08 |
| JPS5550769A (en) | 1980-04-12 |
| NL7810086A (nl) | 1980-04-09 |
| AU5141579A (en) | 1980-04-17 |
| DE2940025C3 (de) | 1982-02-11 |
| DE2940025B2 (de) | 1981-06-19 |
| FR2438394A1 (fr) | 1980-04-30 |
| SE7908193L (sv) | 1980-04-07 |
| GB2032733B (en) | 1982-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |
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