DE69128540T2 - Vorspannungsschaltung geeignet für Verstärker in einem Rufabschaltungserkennungssystem - Google Patents

Vorspannungsschaltung geeignet für Verstärker in einem Rufabschaltungserkennungssystem

Info

Publication number
DE69128540T2
DE69128540T2 DE69128540T DE69128540T DE69128540T2 DE 69128540 T2 DE69128540 T2 DE 69128540T2 DE 69128540 T DE69128540 T DE 69128540T DE 69128540 T DE69128540 T DE 69128540T DE 69128540 T2 DE69128540 T2 DE 69128540T2
Authority
DE
Germany
Prior art keywords
amplifiers
detection system
bias circuit
circuit suitable
call cut
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.)
Expired - Lifetime
Application number
DE69128540T
Other languages
English (en)
Other versions
DE69128540D1 (de
Inventor
Eddie Louis Marie Willocx
Johan Gabriel Augu Verkinderen
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel Alsthom Compagnie Generale dElectricite
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 Alcatel Alsthom Compagnie Generale dElectricite filed Critical Alcatel Alsthom Compagnie Generale dElectricite
Publication of DE69128540D1 publication Critical patent/DE69128540D1/de
Application granted granted Critical
Publication of DE69128540T2 publication Critical patent/DE69128540T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
DE69128540T 1991-12-16 1991-12-16 Vorspannungsschaltung geeignet für Verstärker in einem Rufabschaltungserkennungssystem Expired - Lifetime DE69128540T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91203307A EP0551530B1 (de) 1991-12-16 1991-12-16 Vorspannungsschaltung geeignet für Verstärker in einem Rufabschaltungserkennungssystem

Publications (2)

Publication Number Publication Date
DE69128540D1 DE69128540D1 (de) 1998-02-05
DE69128540T2 true DE69128540T2 (de) 1998-06-10

Family

ID=8208076

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69128540T Expired - Lifetime DE69128540T2 (de) 1991-12-16 1991-12-16 Vorspannungsschaltung geeignet für Verstärker in einem Rufabschaltungserkennungssystem

Country Status (7)

Country Link
US (1) US5341108A (de)
EP (1) EP0551530B1 (de)
JP (1) JPH05299958A (de)
AU (1) AU658462B2 (de)
CA (1) CA2085415C (de)
DE (1) DE69128540T2 (de)
ES (1) ES2111551T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20041671A1 (it) * 2004-08-26 2004-11-26 Atmel Corp "sistema e metodo e apparecchio per conservare un margine di errore per una memoria non volatile"

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821468A (en) * 1972-03-22 1974-06-28 Sarkes Tarzian Digital special effects generator
US3821486A (en) * 1973-06-22 1974-06-28 Bell Telephone Labor Inc Bridge type supervisory detector with reduced breakdown voltage requirements
US4292478A (en) * 1979-05-25 1981-09-29 Plessey Canada Limited Interface circuits
GB2113030A (en) * 1981-12-31 1983-07-27 Rca Corp Circuitry for reducing common mode signals
JPS6089113A (ja) * 1983-10-20 1985-05-20 Nec Corp 平衡型アナログ信号増幅器
US4532381A (en) * 1984-02-13 1985-07-30 Northern Telecom Limited Active impedance line feed circuit
ATE70681T1 (de) * 1985-05-17 1992-01-15 Alcatel Nv Fernmeldeleitungsschaltung.
JPS6480108A (en) * 1987-09-21 1989-03-27 Toshiba Corp Base current compensation circuit
JP2567278B2 (ja) * 1989-01-25 1996-12-25 ファナック株式会社 光学式エンコーダのオフセット調整方法
JPH04104505A (ja) * 1990-08-23 1992-04-07 Fujitsu Ltd 半導体集積回路

Also Published As

Publication number Publication date
CA2085415C (en) 1998-06-16
AU658462B2 (en) 1995-04-13
DE69128540D1 (de) 1998-02-05
JPH05299958A (ja) 1993-11-12
US5341108A (en) 1994-08-23
AU2991492A (en) 1993-06-17
CA2085415A1 (en) 1993-06-17
ES2111551T3 (es) 1998-03-16
EP0551530B1 (de) 1997-12-29
EP0551530A1 (de) 1993-07-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ALCATEL, PARIS, FR

8327 Change in the person/name/address of the patent owner

Owner name: ALCATEL LUCENT, PARIS, FR