FR2500241B1 - - Google Patents
Info
- Publication number
- FR2500241B1 FR2500241B1 FR8202158A FR8202158A FR2500241B1 FR 2500241 B1 FR2500241 B1 FR 2500241B1 FR 8202158 A FR8202158 A FR 8202158A FR 8202158 A FR8202158 A FR 8202158A FR 2500241 B1 FR2500241 B1 FR 2500241B1
- 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
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23468481A | 1981-02-17 | 1981-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2500241A1 FR2500241A1 (en) | 1982-08-20 |
| FR2500241B1 true FR2500241B1 (en) | 1984-12-07 |
Family
ID=22882375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8202158A Granted FR2500241A1 (en) | 1981-02-17 | 1982-02-10 | BATTERY POWER CIRCUIT FOR TELEPHONE INSTALLATION |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH07118751B2 (en) |
| CA (1) | CA1171989A (en) |
| DE (1) | DE3204843A1 (en) |
| FR (1) | FR2500241A1 (en) |
| GB (1) | GB2093314B (en) |
| IT (1) | IT1149642B (en) |
| NL (1) | NL190348C (en) |
| SE (1) | SE452385B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419542A (en) * | 1982-05-17 | 1983-12-06 | Bell Telephone Laboratories, Incorporated | Battery feed circuit |
| FR2527404B1 (en) * | 1982-05-19 | 1987-10-23 | Cit Alcatel | ELECTRONIC SUBSCRIBER |
| SE431704B (en) * | 1982-07-06 | 1984-02-20 | Ericsson Telefon Ab L M | PROCEDURE FOR POWER SUPPLY OF A SUBSCRIBER DEVICE FROM A TELEPHONE SWITCH |
| GB2132448B (en) * | 1982-12-07 | 1986-03-12 | Standard Telephones Cables Ltd | Telephone subscribers' line interface circuit |
| JPS60141006A (en) * | 1983-12-28 | 1985-07-26 | Nec Corp | Impedance synthesis circuit |
| US4571460A (en) * | 1984-03-12 | 1986-02-18 | Northern Telecom Limited | Active impedance line feed circuit with improved ground fault protection |
| FR2564678B1 (en) * | 1984-05-18 | 1986-09-12 | Thomson Csf Mat Tel | SUBSCRIBER CIRCUIT LINK INTERFACE FOR TELEPHONE SWITCH |
| JPS60253364A (en) * | 1984-05-30 | 1985-12-14 | Fujitsu Ltd | Internal termination type power feed circuit |
| US4558272A (en) * | 1984-07-05 | 1985-12-10 | At&T Bell Laboratories | Current characteristic shaper |
| US4612417A (en) * | 1984-07-27 | 1986-09-16 | At&T Bell Laboratories | Electronic battery feed circuit for telephone systems |
| CA1231480A (en) * | 1985-03-15 | 1988-01-12 | John A. Barsellotti | Constant current line circuit |
| IT1197917B (en) * | 1986-10-24 | 1988-12-21 | Sgs Microelettronica Spa | CONTROL CIRCUIT FOR A VOLTAGE REGULATOR OF A CIRCUIT INTERFACE CONNECTION USER TELEPHONE LINE (SLIC) |
| JPS63314060A (en) * | 1987-06-17 | 1988-12-22 | Fujitsu Ltd | Power feeding circuit |
| FR2642593B1 (en) * | 1989-01-31 | 1991-04-12 | Cit Alcatel | ELECTRONIC SUBSCRIBER LINE CONNECTION DEVICE |
| AU2002211684A1 (en) * | 2000-10-17 | 2002-04-29 | Centillium Communications, Inc. | Transformerless interface for modem |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4004109A (en) * | 1975-05-09 | 1977-01-18 | Boxall Frank S | Hybrid circuit |
| DE2857168A1 (en) * | 1977-11-15 | 1980-12-04 | Gen Electric Co Ltd | CURRENT SOURCES |
| JPS5542449A (en) * | 1978-09-22 | 1980-03-25 | Hitachi Ltd | Current supply circuit |
| NL7903665A (en) * | 1979-05-10 | 1980-11-12 | Philips Nv | CONNECTION FOR A TELEPHONE LINE. |
-
1982
- 1982-02-08 CA CA000395802A patent/CA1171989A/en not_active Expired
- 1982-02-08 SE SE8200713A patent/SE452385B/en not_active IP Right Cessation
- 1982-02-10 FR FR8202158A patent/FR2500241A1/en active Granted
- 1982-02-11 DE DE19823204843 patent/DE3204843A1/en active Granted
- 1982-02-12 IT IT19649/82A patent/IT1149642B/en active
- 1982-02-12 GB GB8204080A patent/GB2093314B/en not_active Expired
- 1982-02-16 NL NLAANVRAGE8200612,A patent/NL190348C/en not_active IP Right Cessation
- 1982-02-17 JP JP2294882A patent/JPH07118751B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2093314A (en) | 1982-08-25 |
| FR2500241A1 (en) | 1982-08-20 |
| DE3204843C2 (en) | 1991-11-21 |
| CA1171989A (en) | 1984-07-31 |
| NL190348C (en) | 1994-01-17 |
| NL190348B (en) | 1993-08-16 |
| SE452385B (en) | 1987-11-23 |
| NL8200612A (en) | 1982-09-16 |
| DE3204843A1 (en) | 1982-09-09 |
| IT8219649A0 (en) | 1982-02-12 |
| SE8200713L (en) | 1982-08-18 |
| GB2093314B (en) | 1984-11-28 |
| JPH07118751B2 (en) | 1995-12-18 |
| IT1149642B (en) | 1986-12-03 |
| JPS57154966A (en) | 1982-09-24 |