HK1003532A1 - Supply voltage switching apparatus - Google Patents
Supply voltage switching apparatusInfo
- Publication number
- HK1003532A1 HK1003532A1 HK98102457A HK98102457A HK1003532A1 HK 1003532 A1 HK1003532 A1 HK 1003532A1 HK 98102457 A HK98102457 A HK 98102457A HK 98102457 A HK98102457 A HK 98102457A HK 1003532 A1 HK1003532 A1 HK 1003532A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- supply voltage
- voltage switching
- switching apparatus
- supply
- voltage
- 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
- H04M19/005—Feeding arrangements without the use of line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Dc-Dc Converters (AREA)
- Direct Current Feeding And Distribution (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403876A SE503646C2 (sv) | 1994-11-10 | 1994-11-10 | Automatisk omkopplingsanordning |
PCT/SE1995/001323 WO1996015617A1 (en) | 1994-11-10 | 1995-11-08 | Supply voltage switching apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1003532A1 true HK1003532A1 (en) | 1998-10-30 |
Family
ID=20395928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK98102457A HK1003532A1 (en) | 1994-11-10 | 1998-03-23 | Supply voltage switching apparatus |
Country Status (11)
Country | Link |
---|---|
US (1) | US5801520A (xx) |
EP (1) | EP0791264B1 (xx) |
JP (1) | JP3742105B2 (xx) |
KR (1) | KR100391886B1 (xx) |
CN (1) | CN1083204C (xx) |
AU (1) | AU3942895A (xx) |
DE (1) | DE69533038T2 (xx) |
FI (1) | FI111498B (xx) |
HK (1) | HK1003532A1 (xx) |
SE (1) | SE503646C2 (xx) |
WO (1) | WO1996015617A1 (xx) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI104935B (fi) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Tilaajajohtoliitäntäpiiri |
FI104933B (fi) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Tilaajajohtoliitäntäpiiri |
FI974271A (fi) * | 1997-11-18 | 1999-05-19 | Nokia Telecommunications Oy | Tilaajajohtoliitäntäpiiri |
FI104934B (fi) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Tilaajajohtoliitäntäpiiri |
US6233335B1 (en) * | 1998-05-15 | 2001-05-15 | Intersil Corporation | Battery switching subscriber loop interface circuit |
SE512170C2 (sv) * | 1998-06-02 | 2000-02-07 | Ericsson Telefon Ab L M | Förfarande och anordning för val av matningsspänning |
TW432824B (en) * | 1999-10-04 | 2001-05-01 | Ericsson Telefon Ab L M | An arrangement in a subscriber line interface circuit |
US6525613B2 (en) * | 2001-05-25 | 2003-02-25 | Infineon Technologies Ag | Efficient current feedback buffer |
US20040120512A1 (en) * | 2002-12-20 | 2004-06-24 | Ploumen Franciscus Maria | System and method for optimizing power dissipation in subscriber interface line circuits (SLICS) |
US9711963B2 (en) * | 2010-11-09 | 2017-07-18 | Telefonaktiebolaget L M Ericsson (Publ) | Subscriber line power distribution system |
CN104718739B (zh) * | 2013-12-31 | 2018-09-07 | 华为终端有限公司 | 一种话机上承载电压的调节方法、装置及系统 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889173A (en) * | 1973-12-07 | 1975-06-10 | Texas Instruments Inc | Switching regulator power supply |
US4617473A (en) * | 1984-01-03 | 1986-10-14 | Intersil, Inc. | CMOS backup power switching circuit |
US4694430A (en) * | 1985-03-21 | 1987-09-15 | Sprague Electric Company | Logic controlled switch to alternate voltage sources |
SE465547B (sv) * | 1990-02-01 | 1991-09-23 | Ericsson Telefon Ab L M | Saett och krets foer likstroemsmatning till en telefonlinje |
US5389833A (en) * | 1992-08-27 | 1995-02-14 | Texas Instruments Incorporated | Analog multiplexer |
US5369472A (en) * | 1992-12-04 | 1994-11-29 | Xerox Corporation | Microprocessor controlled high voltage power supply |
EP0631284B1 (en) * | 1993-06-28 | 1997-09-17 | STMicroelectronics S.r.l. | Protection circuit for devices comprising nonvolatile memories |
-
1994
- 1994-11-10 SE SE9403876A patent/SE503646C2/sv not_active IP Right Cessation
-
1995
- 1995-11-08 DE DE69533038T patent/DE69533038T2/de not_active Expired - Fee Related
- 1995-11-08 KR KR1019970703079A patent/KR100391886B1/ko not_active IP Right Cessation
- 1995-11-08 CN CN95196151A patent/CN1083204C/zh not_active Expired - Fee Related
- 1995-11-08 EP EP95937271A patent/EP0791264B1/en not_active Expired - Lifetime
- 1995-11-08 WO PCT/SE1995/001323 patent/WO1996015617A1/en active IP Right Grant
- 1995-11-08 JP JP51597796A patent/JP3742105B2/ja not_active Expired - Fee Related
- 1995-11-08 AU AU39428/95A patent/AU3942895A/en not_active Abandoned
- 1995-11-08 US US08/836,225 patent/US5801520A/en not_active Expired - Fee Related
-
1997
- 1997-05-02 FI FI971889A patent/FI111498B/fi not_active IP Right Cessation
-
1998
- 1998-03-23 HK HK98102457A patent/HK1003532A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69533038T2 (de) | 2004-09-30 |
FI971889A (fi) | 1997-05-02 |
SE9403876L (sv) | 1996-05-11 |
JPH10508994A (ja) | 1998-09-02 |
FI971889A0 (fi) | 1997-05-02 |
JP3742105B2 (ja) | 2006-02-01 |
US5801520A (en) | 1998-09-01 |
KR100391886B1 (ko) | 2004-02-05 |
FI111498B (fi) | 2003-07-31 |
CN1083204C (zh) | 2002-04-17 |
EP0791264B1 (en) | 2004-05-12 |
WO1996015617A1 (en) | 1996-05-23 |
DE69533038D1 (de) | 2004-06-17 |
EP0791264A1 (en) | 1997-08-27 |
SE9403876D0 (sv) | 1994-11-10 |
SE503646C2 (sv) | 1996-07-22 |
AU3942895A (en) | 1996-06-06 |
CN1165603A (zh) | 1997-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20061108 |