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JPS58139757U - リングトリツプ回路 - Google Patents

リングトリツプ回路

Info

Publication number
JPS58139757U
JPS58139757U JP3513182U JP3513182U JPS58139757U JP S58139757 U JPS58139757 U JP S58139757U JP 3513182 U JP3513182 U JP 3513182U JP 3513182 U JP3513182 U JP 3513182U JP S58139757 U JPS58139757 U JP S58139757U
Authority
JP
Japan
Prior art keywords
circuit
ring trip
trip circuit
hook
loop
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
JP3513182U
Other languages
English (en)
Inventor
斎藤　芳久
博之 松田
Original Assignee
株式会社日立製作所
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 by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP3513182U priority Critical patent/JPS58139757U/ja
Publication of JPS58139757U publication Critical patent/JPS58139757U/ja
Pending legal-status Critical Current

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  • Devices For Supply Of Signal Current (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【図面の簡単な説明】
第１図は従来のリングトリップ回路の一例を示す回路図
であり、第２図は本考案のリング）　ＩＪツブ回路の一
実施例を示す回路図である。 １・・・端末器、２・・・呼出信号発振器、３・・・ｏ
ｐアンプ、４・・・リングトリップ表示回路、１１．２
１・・・平滑回路、１２．２２・・・抵抗減衰回路、１
３゜２３・・・判定回路、Ｒ１−Ｒ１８・・・抵抗、ｃ
ｌ、　ｃ２・・・コンデンサ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 被呼端末機のオフフックによって該端末機を介して直流
    ループを形成することにより、該端末機のオフフックを
    検出し、それによって呼出信号を停止して回線を通話状
    態にするリングトリップ回路において、上記直流ループ
    内のリングトリップ検出用抵抗の両端に接続された抵抗
    減衰回路と、該抵抗減衰回路の後段に接続された平滑回
    路と、該平滑回路のコンデンサ両端からリングトリップ
    判定信号を取り出し、該抵抗減衰回路内の抵抗値偏差に
    よる差動電圧を小さくしたことを特徴とするリングトリ
    ップ回路。
JP3513182U 1982-03-15 1982-03-15 リングトリツプ回路 Pending JPS58139757U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3513182U JPS58139757U (ja) 1982-03-15 1982-03-15 リングトリツプ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3513182U JPS58139757U (ja) 1982-03-15 1982-03-15 リングトリツプ回路

Publications (1)

Publication Number Publication Date
JPS58139757U true JPS58139757U (ja) 1983-09-20

Family

ID=30046615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3513182U Pending JPS58139757U (ja) 1982-03-15 1982-03-15 リングトリツプ回路

Country Status (1)

Country Link
JP (1) JPS58139757U (ja)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6948491B2 (en) 2001-03-20 2005-09-27 Aerogen, Inc. Convertible fluid feed system with comformable reservoir and methods
US6978941B2 (en) 2001-05-02 2005-12-27 Aerogen, Inc. Base isolated nebulizing device and methods
US7032590B2 (en) 2001-03-20 2006-04-25 Aerogen, Inc. Fluid filled ampoules and methods for their use in aerosolizers
US7040549B2 (en) 1991-04-24 2006-05-09 Aerogen, Inc. Systems and methods for controlling fluid feed to an aerosol generator
US7066398B2 (en) 1999-09-09 2006-06-27 Aerogen, Inc. Aperture plate and methods for its construction and use
US7174888B2 (en) 1995-04-05 2007-02-13 Aerogen, Inc. Liquid dispensing apparatus and methods
US7201167B2 (en) 2004-04-20 2007-04-10 Aerogen, Inc. Method and composition for the treatment of lung surfactant deficiency or dysfunction
US7290541B2 (en) 2004-04-20 2007-11-06 Aerogen, Inc. Aerosol delivery apparatus and method for pressure-assisted breathing systems
US7322349B2 (en) 2000-05-05 2008-01-29 Aerogen, Inc. Apparatus and methods for the delivery of medicaments to the respiratory system
US7331339B2 (en) 2000-05-05 2008-02-19 Aerogen, Inc. Methods and systems for operating an aerosol generator
US7360536B2 (en) 2002-01-07 2008-04-22 Aerogen, Inc. Devices and methods for nebulizing fluids for inhalation
US7600511B2 (en) 2001-11-01 2009-10-13 Novartis Pharma Ag Apparatus and methods for delivery of medicament to a respiratory system
US7628339B2 (en) 1991-04-24 2009-12-08 Novartis Pharma Ag Systems and methods for controlling fluid feed to an aerosol generator
US9108211B2 (en) 2005-05-25 2015-08-18 Nektar Therapeutics Vibration systems and methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586649A (ja) * 1981-07-06 1983-01-14 Nippon Telegr & Teleph Corp <Ntt> リングトリツプ回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586649A (ja) * 1981-07-06 1983-01-14 Nippon Telegr & Teleph Corp <Ntt> リングトリツプ回路

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7628339B2 (en) 1991-04-24 2009-12-08 Novartis Pharma Ag Systems and methods for controlling fluid feed to an aerosol generator
US7040549B2 (en) 1991-04-24 2006-05-09 Aerogen, Inc. Systems and methods for controlling fluid feed to an aerosol generator
US7174888B2 (en) 1995-04-05 2007-02-13 Aerogen, Inc. Liquid dispensing apparatus and methods
US7066398B2 (en) 1999-09-09 2006-06-27 Aerogen, Inc. Aperture plate and methods for its construction and use
US7331339B2 (en) 2000-05-05 2008-02-19 Aerogen, Inc. Methods and systems for operating an aerosol generator
US7322349B2 (en) 2000-05-05 2008-01-29 Aerogen, Inc. Apparatus and methods for the delivery of medicaments to the respiratory system
US7100600B2 (en) 2001-03-20 2006-09-05 Aerogen, Inc. Fluid filled ampoules and methods for their use in aerosolizers
US7032590B2 (en) 2001-03-20 2006-04-25 Aerogen, Inc. Fluid filled ampoules and methods for their use in aerosolizers
US6948491B2 (en) 2001-03-20 2005-09-27 Aerogen, Inc. Convertible fluid feed system with comformable reservoir and methods
US7104463B2 (en) 2001-05-02 2006-09-12 Aerogen, Inc. Base isolated nebulizing device and methods
US6978941B2 (en) 2001-05-02 2005-12-27 Aerogen, Inc. Base isolated nebulizing device and methods
US7600511B2 (en) 2001-11-01 2009-10-13 Novartis Pharma Ag Apparatus and methods for delivery of medicament to a respiratory system
US7360536B2 (en) 2002-01-07 2008-04-22 Aerogen, Inc. Devices and methods for nebulizing fluids for inhalation
US7201167B2 (en) 2004-04-20 2007-04-10 Aerogen, Inc. Method and composition for the treatment of lung surfactant deficiency or dysfunction
US7267121B2 (en) 2004-04-20 2007-09-11 Aerogen, Inc. Aerosol delivery apparatus and method for pressure-assisted breathing systems
US7290541B2 (en) 2004-04-20 2007-11-06 Aerogen, Inc. Aerosol delivery apparatus and method for pressure-assisted breathing systems
US9108211B2 (en) 2005-05-25 2015-08-18 Nektar Therapeutics Vibration systems and methods

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