JPS5936467B2 - ライン回路 - Google Patents

ライン回路

Info

Publication number
JPS5936467B2
JPS5936467B2 JP52012197A JP1219777A JPS5936467B2 JP S5936467 B2 JPS5936467 B2 JP S5936467B2 JP 52012197 A JP52012197 A JP 52012197A JP 1219777 A JP1219777 A JP 1219777A JP S5936467 B2 JPS5936467 B2 JP S5936467B2
Authority
JP
Japan
Prior art keywords
impedance
line
circuit
battery supply
terminal
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
Application number
JP52012197A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5296808A (en
Inventor
ジヨン・フランシス・オニ−ル
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
Western Electric 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of JPS5296808A publication Critical patent/JPS5296808A/ja
Publication of JPS5936467B2 publication Critical patent/JPS5936467B2/ja
Expired 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
JP52012197A 1976-02-09 1977-02-08 ライン回路 Expired JPS5936467B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US000000656189 1976-02-09
US05/656,189 US3993880A (en) 1976-02-09 1976-02-09 Resistive battery feed for line circuits

Publications (2)

Publication Number Publication Date
JPS5296808A JPS5296808A (en) 1977-08-15
JPS5936467B2 true JPS5936467B2 (ja) 1984-09-04

Family

ID=24632022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52012197A Expired JPS5936467B2 (ja) 1976-02-09 1977-02-08 ライン回路

Country Status (8)

Country Link
US (1) US3993880A (cg-RX-API-DMAC7.html)
JP (1) JPS5936467B2 (cg-RX-API-DMAC7.html)
CA (1) CA1074033A (cg-RX-API-DMAC7.html)
DE (1) DE2705277C3 (cg-RX-API-DMAC7.html)
FR (1) FR2340652A1 (cg-RX-API-DMAC7.html)
GB (1) GB1562934A (cg-RX-API-DMAC7.html)
IT (1) IT1073392B (cg-RX-API-DMAC7.html)
SE (1) SE7701041L (cg-RX-API-DMAC7.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197431A (en) * 1978-10-02 1980-04-08 Digital Telephone Systems, Inc. Subscriber loop feed apparatus
FR2462006A1 (fr) * 1979-07-20 1981-02-06 Ibm France Dispositif pour augmenter l'inductance parallele d'un transformateur
JPS6225009Y2 (cg-RX-API-DMAC7.html) * 1979-12-28 1987-06-26
US4554412A (en) * 1984-07-23 1985-11-19 At&T Information Systems Inc. Resistive line circuit
CA1240088A (en) * 1985-11-20 1988-08-02 Mitel Corporation Solid state trunk circuit
DE3640127A1 (de) * 1986-11-25 1988-06-01 Standard Elektrik Lorenz Ag Elektronische gabelschaltung
US4813066A (en) * 1987-07-13 1989-03-14 American Telephone And Telegraph Company, At&T Information Systems Battery feed circuit for a telephone system
US4899382A (en) * 1988-06-15 1990-02-06 Siemens Transmission Systems, Inc. Telephone circuit using DC blocked transformer and negative impedance technique
JP2912388B2 (ja) * 1989-08-15 1999-06-28 沖電気工業株式会社 加入者回路
EP0446944A3 (en) * 1990-03-16 1991-12-27 Fujitsu Limited Feed circuit in exchanger
JPH0515056A (ja) * 1991-07-04 1993-01-22 Fujitsu Ltd 伝送装置における外部異常電圧保護方式
US5659610A (en) * 1994-09-28 1997-08-19 Lucent Technologies Inc. Battery feed circuit
US6853526B1 (en) * 2000-09-22 2005-02-08 Anadigics, Inc. Transient overvoltage protection circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694184A (en) * 1951-03-16 1954-11-09 Bell Telephone Labor Inc Equalizer
NL113156C (cg-RX-API-DMAC7.html) * 1961-05-18
DE1243728B (de) * 1962-12-19 1967-07-06 Standard Elektrik Lorenz Ag Schaltungsanordnung fuer eine Transistor-Trennstufe mit vorgegebenem, auch bei veraenderlichem Lastwiderstand konstant bleibendem Eingangswiderstand und konstanter Spannungsdaempfung
US3309608A (en) * 1963-10-22 1967-03-14 Alford Andrew High frequency techniques for measuring reflected energy
US3288937A (en) * 1963-11-26 1966-11-29 Automatic Elect Lab Diode switched pad circuit
US3497619A (en) * 1967-10-06 1970-02-24 Us Navy Digital data transmission system
JPS5610829B2 (cg-RX-API-DMAC7.html) * 1973-03-30 1981-03-10

Also Published As

Publication number Publication date
JPS5296808A (en) 1977-08-15
GB1562934A (en) 1980-03-19
CA1074033A (en) 1980-03-18
IT1073392B (it) 1985-04-17
SE7701041L (sv) 1977-08-10
DE2705277C3 (de) 1979-10-18
DE2705277A1 (de) 1977-08-18
DE2705277B2 (de) 1979-03-01
FR2340652A1 (fr) 1977-09-02
FR2340652B1 (cg-RX-API-DMAC7.html) 1980-12-12
US3993880A (en) 1976-11-23

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