JPS6383853U - - Google Patents
Info
- Publication number
- JPS6383853U JPS6383853U JP1986179621U JP17962186U JPS6383853U JP S6383853 U JPS6383853 U JP S6383853U JP 1986179621 U JP1986179621 U JP 1986179621U JP 17962186 U JP17962186 U JP 17962186U JP S6383853 U JPS6383853 U JP S6383853U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- telephone
- supply circuit
- station power
- power source
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
Description
第1図は本考案の電源回路の一実施例を示す回
路構成図、第2図は第1図の電源回路の動作を示
すフローチヤート、第3図は従来の局電源供給回
路の回路図、第4図は従来の電源回路の一実施例
を示す回路図である。 図面中、25は電池電源、27は第1トランジ
スタを示す。
路構成図、第2図は第1図の電源回路の動作を示
すフローチヤート、第3図は従来の局電源供給回
路の回路図、第4図は従来の電源回路の一実施例
を示す回路図である。 図面中、25は電池電源、27は第1トランジ
スタを示す。
Claims (1)
- 電話回線に接続されて機能する多機能電話機、
電話機付属装置等にあつて電池電源とするととも
に待機時は局電源にてバツクアツプしている電源
回路において、並列に接続されている電話機等が
通話状態に入ると局電源が低下するのを検知して
局電源から電池電源に自動的に切換える切換装置
を備えてなることを特徴とする電源回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986179621U JPS6383853U (ja) | 1986-11-20 | 1986-11-20 | |
US07/225,591 US4847899A (en) | 1986-11-20 | 1988-07-27 | Power circuit for telephone accessory devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986179621U JPS6383853U (ja) | 1986-11-20 | 1986-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6383853U true JPS6383853U (ja) | 1988-06-01 |
Family
ID=16068961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986179621U Pending JPS6383853U (ja) | 1986-11-20 | 1986-11-20 |
Country Status (2)
Country | Link |
---|---|
US (1) | US4847899A (ja) |
JP (1) | JPS6383853U (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5317634A (en) * | 1988-12-23 | 1994-05-31 | Alcatel N.V. | Telephone subset arrangement |
AU630900B2 (en) * | 1988-12-23 | 1992-11-12 | Alcatel Australia Limited | A telephone subset arrangement |
AU618651B2 (en) * | 1989-02-02 | 1992-01-02 | Alcatel Australia Limited | Battery boosted dial memory |
US5161182A (en) * | 1989-04-04 | 1992-11-03 | Sparton Corporation | Remote meter reading method and apparatus |
US5010568A (en) * | 1989-04-04 | 1991-04-23 | Sparton Corporation | Remote meter reading method and apparatus |
US5051730A (en) * | 1989-08-25 | 1991-09-24 | Siemens Aktiengesellschaft | Circuit arrangement for charging rectifiers for DC energy storage devices in telecommunications systems, particularly telephone switching systems |
US4984267A (en) * | 1990-01-29 | 1991-01-08 | Nynex Corporation | Backup power supply at subscriber terminal |
JP2836759B2 (ja) * | 1990-06-01 | 1998-12-14 | ローム 株式会社 | 選択信号送出回路 |
KR940001430B1 (ko) * | 1991-04-23 | 1994-02-23 | 삼성전자 주식회사 | 무선전화기에서 정전대피 회로 및 방법 |
IT1254796B (it) * | 1992-02-17 | 1995-10-11 | St Microelectronics Srl | Dispositivo di limitazione della tensione operativa per interruttori meccanici in telefonia. |
US5351296A (en) * | 1993-03-29 | 1994-09-27 | Niobrara Research & Development Corporation | Financial transmission system |
US6256518B1 (en) * | 1997-10-10 | 2001-07-03 | At&T Corp. | System for providing power to a wireless system |
US5892298A (en) * | 1998-02-26 | 1999-04-06 | Coin Acceptors, Inc. | Control circuit for selectively providing electrical energy to an electrically controlled lock actuator |
US6433672B1 (en) | 1999-02-03 | 2002-08-13 | Shirin Khademi Shirmard | Combined power and communication delivery system and kit for installation at or beyond the demarcation point |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188652A (ja) * | 1984-10-05 | 1986-05-06 | Fujitsu Ltd | 電話端末機の電源供給方式 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6074761A (ja) * | 1983-09-30 | 1985-04-27 | Fujitsu Ltd | 電話端末機の停電時電源供給回路 |
US4591666A (en) * | 1983-12-05 | 1986-05-27 | Gte Business Communication Systems Inc. | Protection circuitry for subscriber's telephone circuit equipped with repertory memory |
JPS60150364A (ja) * | 1984-01-18 | 1985-08-08 | Matsushita Electric Ind Co Ltd | 電話装置 |
US4636588A (en) * | 1984-02-29 | 1987-01-13 | Kabushiki Kaisha Toshiba | Electric source circuit for telephone sets |
US4647787A (en) * | 1985-02-04 | 1987-03-03 | Gte Communication Systems Corp. | Backup battery power supply for microprocessor based telephones |
US4675902A (en) * | 1985-09-23 | 1987-06-23 | Gte Communication Systems, Inc. | High performance telephone instrument with combination pulse and tone dialing capacity |
-
1986
- 1986-11-20 JP JP1986179621U patent/JPS6383853U/ja active Pending
-
1988
- 1988-07-27 US US07/225,591 patent/US4847899A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188652A (ja) * | 1984-10-05 | 1986-05-06 | Fujitsu Ltd | 電話端末機の電源供給方式 |
Also Published As
Publication number | Publication date |
---|---|
US4847899A (en) | 1989-07-11 |
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