DK497474A - - Google Patents
Info
- Publication number
- DK497474A DK497474A DK497474A DK497474A DK497474A DK 497474 A DK497474 A DK 497474A DK 497474 A DK497474 A DK 497474A DK 497474 A DK497474 A DK 497474A DK 497474 A DK497474 A DK 497474A
- Authority
- DK
- Denmark
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)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732347696 DE2347696C3 (de) | 1973-09-21 | 1973-09-21 | Schaltungsanordnung zum Speisen von Teilnehmeranschlußleitungen in Fernsprechvermittlungsanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK497474A true DK497474A (da) | 1975-06-02 |
Family
ID=5893326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK497474A DK497474A (da) | 1973-09-21 | 1974-09-20 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT343185B (da) |
| CH (1) | CH575200A5 (da) |
| DE (1) | DE2347696C3 (da) |
| DK (1) | DK497474A (da) |
| FI (1) | FI269974A (da) |
| IN (1) | IN140059B (da) |
| IT (1) | IT1021492B (da) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1584778A (en) * | 1976-09-17 | 1981-02-18 | Gen Electric | Telecommunication exchanges |
| NL7802423A (nl) * | 1978-03-06 | 1979-09-10 | Philips Nv | Voedingsinrichting voor een lijnstroomloop. |
| NL7802421A (nl) * | 1978-03-06 | 1979-09-10 | Philips Nv | Voedingsschakeling voor een abonneelijnstroom- loop. |
| US4761812A (en) * | 1985-12-10 | 1988-08-02 | U.S. Holding Company, Inc. | Constant power telephone line circuit |
| US11334762B1 (en) | 2017-09-07 | 2022-05-17 | Aurora Operations, Inc. | Method for image analysis |
-
1973
- 1973-09-21 DE DE19732347696 patent/DE2347696C3/de not_active Expired
-
1974
- 1974-07-30 CH CH1045874A patent/CH575200A5/xx not_active IP Right Cessation
- 1974-08-05 AT AT640274A patent/AT343185B/de active
- 1974-09-16 FI FI269974A patent/FI269974A/fi unknown
- 1974-09-18 IT IT2742174A patent/IT1021492B/it active
- 1974-09-18 IN IN2079/CAL/74A patent/IN140059B/en unknown
- 1974-09-20 DK DK497474A patent/DK497474A/da unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2347696C3 (de) | 1978-12-21 |
| AT343185B (de) | 1978-05-10 |
| DE2347696A1 (de) | 1975-04-03 |
| DE2347696B2 (de) | 1978-04-27 |
| IN140059B (da) | 1976-09-04 |
| CH575200A5 (da) | 1976-04-30 |
| FI269974A (da) | 1975-03-22 |
| IT1021492B (it) | 1978-01-30 |
| ATA640274A (de) | 1977-09-15 |