IT8322588A0 - Circuito d'alimentazione a batteria tampone per interfaccia di linea telefonica d'abbonato. - Google Patents
Circuito d'alimentazione a batteria tampone per interfaccia di linea telefonica d'abbonato.Info
- Publication number
- IT8322588A0 IT8322588A0 IT8322588A IT2258883A IT8322588A0 IT 8322588 A0 IT8322588 A0 IT 8322588A0 IT 8322588 A IT8322588 A IT 8322588A IT 2258883 A IT2258883 A IT 2258883A IT 8322588 A0 IT8322588 A0 IT 8322588A0
- Authority
- IT
- Italy
- Prior art keywords
- subscriber
- power circuit
- telephone line
- battery power
- line interface
- 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
-
- 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)
- 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 |
---|---|---|---|
US06/429,743 US4429186A (en) | 1982-09-30 | 1982-09-30 | Floating battery feed circuit for telephone subscriber line interface |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8322588A0 true IT8322588A0 (it) | 1983-08-19 |
IT1163921B IT1163921B (it) | 1987-04-08 |
Family
ID=23704551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22588/83A IT1163921B (it) | 1982-09-30 | 1983-08-19 | Circuito d'alimentazione a batteria tampone per interfaccia di linea telefonica d'abbonato |
Country Status (4)
Country | Link |
---|---|
US (1) | US4429186A (it) |
BE (1) | BE897857A (it) |
CA (1) | CA1201230A (it) |
IT (1) | IT1163921B (it) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4511763A (en) * | 1982-11-01 | 1985-04-16 | Gte Communication Systems Corporation | Floating dc current source for a subscriber loop circuit |
US4536614A (en) * | 1982-12-13 | 1985-08-20 | Gte Communication Systems Corporation | Supervision and dial pulse detection circuit for a telephone subscriber line |
DE3473803D1 (en) * | 1984-06-20 | 1988-10-06 | Ibm | Detection circuit for current varations |
US4598173A (en) * | 1984-10-15 | 1986-07-01 | Itt Corporation | Interface circuit for a subscriber line circuit |
US4761812A (en) * | 1985-12-10 | 1988-08-02 | U.S. Holding Company, Inc. | Constant power telephone line circuit |
US4805213A (en) * | 1987-02-13 | 1989-02-14 | Unison Technologies, Inc. | Ring detector |
US5052039A (en) * | 1990-01-16 | 1991-09-24 | Northern Telecom Limited | Line interface circuit |
US5349242A (en) * | 1990-11-15 | 1994-09-20 | Kabushiki Kaisha Toshiba | Bidirectional switch circuit with automatic return-current path selector |
JPH04229715A (ja) * | 1990-11-15 | 1992-08-19 | Toshiba Corp | 双方向スイッチ回路 |
US5289359A (en) * | 1991-02-13 | 1994-02-22 | Charles Industries, Limited | DC-DC power converter including sensing means for providing an output when the reserve power of the converter falls below a predetermined amount for a given input voltage |
CA2097449C (en) * | 1992-06-05 | 1998-09-15 | Satosi Sakuragi | Telephone line power utility circuit |
-
1982
- 1982-09-30 US US06/429,743 patent/US4429186A/en not_active Expired - Fee Related
-
1983
- 1983-08-19 IT IT22588/83A patent/IT1163921B/it active
- 1983-08-25 CA CA000435330A patent/CA1201230A/en not_active Expired
- 1983-09-29 BE BE2/60218A patent/BE897857A/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA1201230A (en) | 1986-02-25 |
IT1163921B (it) | 1987-04-08 |
US4429186A (en) | 1984-01-31 |
BE897857A (fr) | 1984-01-16 |
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