GB2093314B - Battery feed circuit - Google Patents
Battery feed circuitInfo
- Publication number
- GB2093314B GB2093314B GB8204080A GB8204080A GB2093314B GB 2093314 B GB2093314 B GB 2093314B GB 8204080 A GB8204080 A GB 8204080A GB 8204080 A GB8204080 A GB 8204080A GB 2093314 B GB2093314 B GB 2093314B
- Authority
- GB
- United Kingdom
- Prior art keywords
- feed circuit
- battery feed
- battery
- circuit
- feed
- Prior art date
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23468481A | 1981-02-17 | 1981-02-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2093314A GB2093314A (en) | 1982-08-25 |
GB2093314B true GB2093314B (en) | 1984-11-28 |
Family
ID=22882375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8204080A Expired GB2093314B (en) | 1981-02-17 | 1982-02-12 | Battery feed circuit |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPH07118751B2 (it) |
CA (1) | CA1171989A (it) |
DE (1) | DE3204843A1 (it) |
FR (1) | FR2500241A1 (it) |
GB (1) | GB2093314B (it) |
IT (1) | IT1149642B (it) |
NL (1) | NL190348C (it) |
SE (1) | SE452385B (it) |
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 (fr) * | 1982-05-19 | 1987-10-23 | Cit Alcatel | Joncteur d'abonne electronique |
SE431704B (sv) * | 1982-07-06 | 1984-02-20 | Ericsson Telefon Ab L M | Forfarande vid strommatning av en abonnentapparat fran en telefonvexel |
GB2132448B (en) * | 1982-12-07 | 1986-03-12 | Standard Telephones Cables Ltd | Telephone subscribers' line interface circuit |
JPS60141006A (ja) * | 1983-12-28 | 1985-07-26 | Nec Corp | インピ−ダンス合成回路 |
US4571460A (en) * | 1984-03-12 | 1986-02-18 | Northern Telecom Limited | Active impedance line feed circuit with improved ground fault protection |
FR2564678B1 (fr) * | 1984-05-18 | 1986-09-12 | Thomson Csf Mat Tel | Interface de liaison de circuit d'abonne pour autocommutateur telephonique |
JPS60253364A (ja) * | 1984-05-30 | 1985-12-14 | Fujitsu Ltd | 内部終端形給電回路 |
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 (it) * | 1986-10-24 | 1988-12-21 | Sgs Microelettronica Spa | Circuito di controllo per un regolatore di tensione di un circuito interfaccia attacco linea telefonica d'utente (slic) |
JPS63314060A (ja) * | 1987-06-17 | 1988-12-22 | Fujitsu Ltd | 給電回路 |
FR2642593B1 (fr) * | 1989-01-31 | 1991-04-12 | Cit Alcatel | Dispositif electronique de raccordement de ligne d'abonne |
WO2002033842A2 (en) * | 2000-10-17 | 2002-04-25 | 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 (de) * | 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 (nl) * | 1979-05-10 | 1980-11-12 | Philips Nv | Aansluitschakeling voor een telefoonlijn. |
-
1982
- 1982-02-08 CA CA000395802A patent/CA1171989A/en not_active Expired
- 1982-02-08 SE SE8200713A patent/SE452385B/sv not_active IP Right Cessation
- 1982-02-10 FR FR8202158A patent/FR2500241A1/fr active Granted
- 1982-02-11 DE DE19823204843 patent/DE3204843A1/de active Granted
- 1982-02-12 GB GB8204080A patent/GB2093314B/en not_active Expired
- 1982-02-12 IT IT19649/82A patent/IT1149642B/it active
- 1982-02-16 NL NLAANVRAGE8200612,A patent/NL190348C/xx not_active IP Right Cessation
- 1982-02-17 JP JP2294882A patent/JPH07118751B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SE452385B (sv) | 1987-11-23 |
FR2500241A1 (fr) | 1982-08-20 |
NL190348C (nl) | 1994-01-17 |
CA1171989A (en) | 1984-07-31 |
IT8219649A0 (it) | 1982-02-12 |
DE3204843A1 (de) | 1982-09-09 |
NL8200612A (nl) | 1982-09-16 |
DE3204843C2 (it) | 1991-11-21 |
IT1149642B (it) | 1986-12-03 |
SE8200713L (sv) | 1982-08-18 |
FR2500241B1 (it) | 1984-12-07 |
JPH07118751B2 (ja) | 1995-12-18 |
GB2093314A (en) | 1982-08-25 |
NL190348B (nl) | 1993-08-16 |
JPS57154966A (en) | 1982-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Effective date: 20020211 |