DE3373966D1 - Floating battery feed circuit - Google Patents
Floating battery feed circuitInfo
- Publication number
- DE3373966D1 DE3373966D1 DE8383902505T DE3373966T DE3373966D1 DE 3373966 D1 DE3373966 D1 DE 3373966D1 DE 8383902505 T DE8383902505 T DE 8383902505T DE 3373966 T DE3373966 T DE 3373966T DE 3373966 D1 DE3373966 D1 DE 3373966D1
- Authority
- DE
- Germany
- Prior art keywords
- feed circuit
- battery feed
- floating battery
- floating
- circuit
- 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
- H04M19/008—Using DC/DC converters
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/477,985 US4499532A (en) | 1983-03-23 | 1983-03-23 | Floating battery feed circuit |
PCT/US1983/001055 WO1984003809A1 (en) | 1983-03-23 | 1983-07-13 | Floating battery feed circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3373966D1 true DE3373966D1 (en) | 1987-11-05 |
Family
ID=23898103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383902505T Expired DE3373966D1 (en) | 1983-03-23 | 1983-07-13 | Floating battery feed circuit |
Country Status (7)
Country | Link |
---|---|
US (1) | US4499532A (de) |
EP (1) | EP0137783B1 (de) |
JP (1) | JPS60500792A (de) |
KR (1) | KR840008239A (de) |
CA (1) | CA1215428A (de) |
DE (1) | DE3373966D1 (de) |
WO (1) | WO1984003809A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59201676A (ja) * | 1983-04-28 | 1984-11-15 | Canon Inc | フライバックトランスを用いた電源装置 |
US4551670A (en) * | 1984-04-19 | 1985-11-05 | At&T Bell Laboratories | Circuit for maintaining the DC voltage on an electrically isolated telecommunication line at a reference level |
US4602130A (en) * | 1984-10-15 | 1986-07-22 | Itt Corporation | Dual voltage source feed circuit configuration for a telephone line circuit |
US4621311A (en) * | 1985-02-06 | 1986-11-04 | Stevens-Arnold, Inc. | High-speed switching regulator |
US4679232A (en) * | 1985-08-02 | 1987-07-07 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for providing a ground reference for telephone customer special circuits powered from a floating battery feed |
US4780696A (en) * | 1985-08-08 | 1988-10-25 | American Telephone And Telegraph Company, At&T Bell Laboratories | Multifilar transformer apparatus and winding method |
US4679132A (en) * | 1985-08-08 | 1987-07-07 | American Telephone And Telegraph Company, At&T Bell Laboratories | Floating battery feed circuit using multifilar transformer |
US4704670A (en) * | 1986-12-31 | 1987-11-03 | American Telephone & Telegraph Company, At&T Bell Laboratories | Power supply with regulated output voltage |
US4890210A (en) * | 1988-11-15 | 1989-12-26 | Gilbarco, Inc. | Power supply having combined forward converter and flyback action for high efficiency conversion from low to high voltage |
FR2651398B1 (fr) * | 1989-08-31 | 1995-08-25 | Alcatel Business Systems | Agencement d'alimentation pour terminal telephonique et/ou telematique. |
US5003451A (en) * | 1989-12-21 | 1991-03-26 | At&T Bell Laboratories | Switched damper circuit for dc to dc power converters |
US5740241A (en) * | 1995-05-12 | 1998-04-14 | Carrier Access Corporation | T1 channel bank control process and apparatus |
US6008681A (en) * | 1998-06-02 | 1999-12-28 | Conexant Systems, Inc. | Method and apparatus for deriving power from a clock signal coupled through a transformer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5218366B2 (de) * | 1972-12-27 | 1977-05-21 | ||
US4063307A (en) * | 1976-06-28 | 1977-12-13 | Teletype Corporation | Direct current power converter with start-up and protection circuits |
US4156273A (en) * | 1976-10-07 | 1979-05-22 | Sanyo Electric Co., Ltd. | Protection of a switching regulator |
US4056691A (en) * | 1977-01-05 | 1977-11-01 | Bell Telephone Laboratories, Incorporated | Telephone subscriber line circuit |
US4302803A (en) * | 1980-01-16 | 1981-11-24 | Sperry Corporation | Rectifier-converter power supply with multi-channel flyback inverter |
US4400767A (en) * | 1981-06-30 | 1983-08-23 | Honeywell Information Systems Inc. | Self start flyback power supply |
-
1983
- 1983-03-23 US US06/477,985 patent/US4499532A/en not_active Expired - Fee Related
- 1983-07-13 WO PCT/US1983/001055 patent/WO1984003809A1/en active IP Right Grant
- 1983-07-13 EP EP83902505A patent/EP0137783B1/de not_active Expired
- 1983-07-13 JP JP58502511A patent/JPS60500792A/ja active Pending
- 1983-07-13 DE DE8383902505T patent/DE3373966D1/de not_active Expired
-
1984
- 1984-02-28 CA CA000448430A patent/CA1215428A/en not_active Expired
- 1984-03-20 KR KR1019840001419A patent/KR840008239A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
KR840008239A (ko) | 1984-12-13 |
US4499532A (en) | 1985-02-12 |
WO1984003809A1 (en) | 1984-09-27 |
CA1215428A (en) | 1986-12-16 |
EP0137783B1 (de) | 1987-09-30 |
JPS60500792A (ja) | 1985-05-23 |
EP0137783A1 (de) | 1985-04-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |