JPS5955665A - 電話機通話／信号回路 - Google Patents

電話機通話／信号回路

Info

Publication number
JPS5955665A
JPS5955665A JP58152592A JP15259283A JPS5955665A JP S5955665 A JPS5955665 A JP S5955665A JP 58152592 A JP58152592 A JP 58152592A JP 15259283 A JP15259283 A JP 15259283A JP S5955665 A JPS5955665 A JP S5955665A
Authority
JP
Japan
Prior art keywords
circuit
transistor
capacitor
amplifier
voltage
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.)
Granted
Application number
JP58152592A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0420302B2 (enExample
Inventor
ケニ−ス・ネビル・バ−ゲン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS5955665A publication Critical patent/JPS5955665A/ja
Publication of JPH0420302B2 publication Critical patent/JPH0420302B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP58152592A 1982-08-25 1983-08-23 電話機通話／信号回路 Granted JPS5955665A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08224347A GB2126047A (en) 1982-08-25 1982-08-25 Telephone circuit
GB8224347 1982-08-25

Publications (2)

Publication Number Publication Date
JPS5955665A true JPS5955665A (ja) 1984-03-30
JPH0420302B2 JPH0420302B2 (enExample) 1992-04-02

Family

ID=10532501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58152592A Granted JPS5955665A (ja) 1982-08-25 1983-08-23 電話機通話／信号回路

Country Status (5)

Country Link
US (1) US4506114A (enExample)
EP (1) EP0102111B1 (enExample)
JP (1) JPS5955665A (enExample)
DE (1) DE3381983D1 (enExample)
GB (1) GB2126047A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575625B1 (fr) * 1984-12-27 1987-01-30 Thomson Csf Poste telephonique d'abonne a haut-parleur d'ecoute amplifiee avec reduction de gain en cas d'alimentation insuffisante
GB2183964B (en) 1985-11-28 1989-10-11 Stc Plc Telephone power supply
US4791638A (en) * 1986-10-13 1988-12-13 Pioneer Electronic Corporation Signal processsing circuit for a telephone set
EP0363362A4 (en) * 1987-04-09 1991-03-20 Standard Telephones And Cables Pty. Limited Telephone subset circuit arrangement
US4819678A (en) * 1988-06-01 1989-04-11 Nolan James F Portable cleaner
EP0593115A3 (en) * 1992-10-14 1999-02-17 Koninklijke Philips Electronics N.V. Electronic hook switch for a subscriber set
US5771278A (en) * 1993-12-27 1998-06-23 Cirrus Logic, Inc. Method and apparatus for minimizing system oscillations caused by acoustical coupling
DE4404264C1 (de) * 1994-02-10 1995-04-06 Siemens Ag Schaltungsanordnung zum komplexen Leitungsabschluß einer Zweidrahtleitung in einer Kommunikationseinrichtung
DE19636954B4 (de) * 1996-09-11 2005-08-18 Infineon Technologies Ag Teilnehmerschaltung
CN1301449A (zh) * 1998-05-04 2001-06-27 皇家菲利浦电子有限公司 一种带有ac与dc线路调整的电话线接口电路
JP2013192195A (ja) * 2012-02-16 2013-09-26 Denso Corp 音響装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780228A (en) * 1972-03-01 1973-12-18 Gte Automatic Electric Lab Inc Automatic disconnect circuit for reducing dial pulse distortion caused by subscriber carrier equipment
AT359565B (de) * 1978-09-20 1980-11-25 Siemens Ag Oesterreich Schaltungsanordnung fuer die speisung elektroni- scher bauteile aus einem ueber die teilnehmer- anschlussleitung aufladbaren ladungsspeicher
DE2931456C2 (de) * 1979-08-02 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Parallelregelschaltung

Also Published As

Publication number Publication date
US4506114A (en) 1985-03-19
EP0102111B1 (en) 1990-11-07
JPH0420302B2 (enExample) 1992-04-02
DE3381983D1 (de) 1990-12-13
EP0102111A3 (en) 1986-05-21
EP0102111A2 (en) 1984-03-07
GB2126047A (en) 1984-03-14

Similar Documents

Publication Publication Date Title
US4380687A (en) Power supply control circuit for subscriber carrier telephone system
JPS5955665A (ja) 電話機通話／信号回路
US4691336A (en) Telephone test set having an auxiliary amplifier and speaker for permitting listening to line signals
US4724540A (en) Speakerphone with fast idle mode
US4346265A (en) Annunciator
EP0102660B1 (en) Telephone circuit
US4701949A (en) Frequency responsive party telephone line selection apparatus and method
US3786200A (en) Amplifier for use in communication systems
JP2575464B2 (ja) 過電圧保護手段を含む電話器回路
JPS63254851A (ja) 積分増幅器用補償回路
US4944002A (en) Current switch for use in telephony systems or the like
GB2126052A (en) Telephone circuit
KR100365577B1 (ko) 전화훅스위치인터페이스회로
US4347406A (en) Pulse detector circuit
US4374303A (en) Power supply control circuit for subscriber carrier telephone system
US6842520B2 (en) Telephone
US5859906A (en) Telephone switch hook interface circuit
JPS63268341A (ja) 電話回線接続回路
JPS6211099Y2 (enExample)
JPS59178058A (ja) 受話自動音量調節回路
JP2538927Y2 (ja) 電話機装置
JPS63268342A (ja) 電話回線接続回路
JPH0683308B2 (ja) 電話回線接続回路
JPS62159959A (ja) 電話回線保留回路
JPS62294322A (ja) パルス幅識別回路