DE3579963D1 - Stromkennlinienformer. - Google Patents

Stromkennlinienformer.

Info

Publication number
DE3579963D1
DE3579963D1 DE8585304541T DE3579963T DE3579963D1 DE 3579963 D1 DE3579963 D1 DE 3579963D1 DE 8585304541 T DE8585304541 T DE 8585304541T DE 3579963 T DE3579963 T DE 3579963T DE 3579963 D1 DE3579963 D1 DE 3579963D1
Authority
DE
Germany
Prior art keywords
current characteristics
current
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 - Fee Related
Application number
DE8585304541T
Other languages
English (en)
Inventor
James Tureaud Grosch
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3579963D1 publication Critical patent/DE3579963D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
DE8585304541T 1984-07-05 1985-06-26 Stromkennlinienformer. Expired - Fee Related DE3579963D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/628,042 US4558272A (en) 1984-07-05 1984-07-05 Current characteristic shaper

Publications (1)

Publication Number Publication Date
DE3579963D1 true DE3579963D1 (de) 1990-11-08

Family

ID=24517195

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585304541T Expired - Fee Related DE3579963D1 (de) 1984-07-05 1985-06-26 Stromkennlinienformer.

Country Status (5)

Country Link
US (1) US4558272A (de)
EP (1) EP0167346B1 (de)
JP (2) JP2908449B2 (de)
CA (1) CA1217827A (de)
DE (1) DE3579963D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1214603B (it) * 1985-04-30 1990-01-18 Ates Componenti Elettron Circuito telefonico, integrabile monoliticamente, perl'alimentazione di una linea telefonica d'utente.
CA1291836C (en) * 1987-06-17 1991-11-05 Kenji Takato Battery feed circuit
US5187429A (en) * 1992-02-20 1993-02-16 Northern Telecom Limited Reference voltage generator for dynamic random access memory
US5249226A (en) * 1992-03-02 1993-09-28 Advanced Micro Devices, Inc. Apparatus for controlling a current supply device
GB9223338D0 (en) * 1992-11-06 1992-12-23 Sgs Thomson Microelectronics Low voltage reference current generating circuit
GB9304954D0 (en) * 1993-03-11 1993-04-28 Sgs Thomson Microelectronics Reference current generating circuit
US5798573A (en) * 1997-04-01 1998-08-25 Kb Electronics, Inc. Split power supply
JP3144478B2 (ja) * 1997-11-05 2001-03-12 日本電気株式会社 カレントミラー回路
US6157716A (en) * 1998-05-08 2000-12-05 Bell Atlantic Corporation Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop
JP5520967B2 (ja) * 2009-02-16 2014-06-11 エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート 適応的正弦波コーディングを用いるオーディオ信号の符号化及び復号化方法及び装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863169A (en) * 1974-01-18 1975-01-28 Rca Corp Composite transistor circuit
JPS5946035B2 (ja) * 1978-05-08 1984-11-09 横河電機株式会社 折線関数信号発生装置
US4272656A (en) * 1979-04-05 1981-06-09 Precision Monolithics, Inc. Quasi-resistive battery feed for telephone circuits
US4323797A (en) * 1980-05-09 1982-04-06 Bell Telephone Laboratories, Incorporated Reciprocal current circuit
SE452385B (sv) * 1981-02-17 1987-11-23 Western Electric Co Batterimatningskrets
US4458201A (en) * 1982-04-05 1984-07-03 Burr-Brown Research Corp. Digitally controlled precision current source with an open loop compensation circuit

Also Published As

Publication number Publication date
JPS6135058A (ja) 1986-02-19
EP0167346A2 (de) 1986-01-08
EP0167346B1 (de) 1990-10-03
JP2908449B2 (ja) 1999-06-21
JPH1174999A (ja) 1999-03-16
CA1217827A (en) 1987-02-10
EP0167346A3 (en) 1987-05-20
US4558272A (en) 1985-12-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee