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
Application number
JP1986179621U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1986179621U priority Critical patent/JPS6383853U/ja
Publication of JPS6383853U publication Critical patent/JPS6383853U/ja
Priority to US07/225,591 priority patent/US4847899A/en
Pending legal-status Critical Current

Links

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)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

【図面の簡単な説明】
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。

Claims (1)

    【実用新案登録請求の範囲】
  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。
JP1986179621U 1986-11-20 1986-11-20 Pending JPS6383853U (ja)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU630900B2 (en) * 1988-12-23 1992-11-12 Alcatel Australia Limited A telephone subset arrangement
WO1990007835A1 (en) * 1988-12-23 1990-07-12 Standard Telephones And Cables Pty. Limited A telephone subset arrangement
AU618651B2 (en) * 1989-02-02 1992-01-02 Alcatel Australia Limited Battery boosted dial memory
US5010568A (en) * 1989-04-04 1991-04-23 Sparton Corporation Remote meter reading method and apparatus
US5161182A (en) * 1989-04-04 1992-11-03 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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