GR79045B - - Google Patents
Info
- Publication number
- GR79045B GR79045B GR72485A GR830172485A GR79045B GR 79045 B GR79045 B GR 79045B GR 72485 A GR72485 A GR 72485A GR 830172485 A GR830172485 A GR 830172485A GR 79045 B GR79045 B GR 79045B
- Authority
- GR
- Greece
- Prior art keywords
- supply
- loop current
- balanced
- feeder
- switch
- 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
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Amplifiers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Analogue/Digital Conversion (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Networks Using Active Elements (AREA)
- Electrotherapy Devices (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823235085 DE3235085A1 (de) | 1982-09-22 | 1982-09-22 | Schleifenstromeinspeisung fuer einen kennzeichenumsetzer |
Publications (1)
Publication Number | Publication Date |
---|---|
GR79045B true GR79045B (el) | 1984-10-02 |
Family
ID=6173866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR72485A GR79045B (el) | 1982-09-22 | 1983-09-20 |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0104581B1 (el) |
JP (1) | JPS5979669A (el) |
AT (1) | ATE34897T1 (el) |
AU (1) | AU542635B2 (el) |
BR (1) | BR8305168A (el) |
DE (2) | DE3235085A1 (el) |
GR (1) | GR79045B (el) |
IN (1) | IN159075B (el) |
NO (1) | NO833370L (el) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8601774A (nl) * | 1986-07-08 | 1988-02-01 | Philips Nv | Dc-voedingsinrichting voor een telecommunicatieleiding. |
DE4130213C2 (de) * | 1991-09-11 | 1996-06-13 | Siemens Uebertragungssys Gmbh | Steuerschaltung für einen stromregelnden Schaltregler |
DE9321241U1 (de) * | 1993-06-16 | 1996-09-26 | Detewe-Deutsche Telephonwerke Ag & Co, 10997 Berlin | Schaltungsanordnung für die Speisung von digitalen Kommunikations-Endgeräten |
DE4326238C2 (de) * | 1993-07-31 | 1997-09-11 | Deutsche Telephonwerk Kabel | Schaltungsanordnung für eine übertragerlose physikalische Schnittstelle |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4056689A (en) * | 1977-01-05 | 1977-11-01 | Bell Telephone Laboratories, Incorporated | Telephone subscriber line circuit |
DE2748522B1 (de) * | 1977-10-28 | 1979-04-26 | Siemens Ag | Anordnung zur Schleifensignalisierung |
DE2911517C2 (de) * | 1979-03-23 | 1981-07-09 | Siemens AG, 1000 Berlin und 8000 München | Teilnehmeranschlußschaltung mit Erdtasten- und Isolationsfehlerindikation |
DD143135A1 (de) * | 1979-04-23 | 1980-07-30 | Reinhard Lemke | Schaltungsanordnung zum verlustleistungsarmen anschalten von gleichstromkennzeichen in fernsprechvermittlungsanlagen |
GB2065418B (en) * | 1979-12-06 | 1984-02-15 | Standard Telephones Cables Ltd | Telephone line feed |
US4315207A (en) * | 1980-06-20 | 1982-02-09 | Advanced Micro Devices, Inc. | Current controlled battery feed circuit |
US4387273A (en) * | 1980-08-25 | 1983-06-07 | International Telephone And Telegraph Corporation | Subscriber line interface circuit with impedance synthesizer |
EP0057009B1 (en) * | 1981-01-28 | 1985-07-03 | Hitachi, Ltd. | Current supply circuit |
DE3104138A1 (de) * | 1981-02-06 | 1982-08-19 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Teilnehmerschaltung |
-
1982
- 1982-09-22 DE DE19823235085 patent/DE3235085A1/de not_active Withdrawn
-
1983
- 1983-07-22 IN IN912/CAL/83A patent/IN159075B/en unknown
- 1983-09-19 NO NO833370A patent/NO833370L/no unknown
- 1983-09-19 AT AT83109274T patent/ATE34897T1/de not_active IP Right Cessation
- 1983-09-19 DE DE8383109274T patent/DE3376949D1/de not_active Expired
- 1983-09-19 EP EP83109274A patent/EP0104581B1/de not_active Expired
- 1983-09-20 GR GR72485A patent/GR79045B/el unknown
- 1983-09-21 AU AU19327/83A patent/AU542635B2/en not_active Ceased
- 1983-09-21 BR BR8305168A patent/BR8305168A/pt unknown
- 1983-09-22 JP JP58174462A patent/JPS5979669A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
IN159075B (el) | 1987-03-21 |
EP0104581B1 (de) | 1988-06-01 |
NO833370L (no) | 1984-03-23 |
EP0104581A3 (en) | 1985-06-19 |
ATE34897T1 (de) | 1988-06-15 |
JPS5979669A (ja) | 1984-05-08 |
DE3235085A1 (de) | 1984-03-22 |
BR8305168A (pt) | 1984-05-02 |
DE3376949D1 (en) | 1988-07-07 |
EP0104581A2 (de) | 1984-04-04 |
AU542635B2 (en) | 1985-02-28 |
AU1932783A (en) | 1984-03-29 |
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