CH586984A5 - - Google Patents

Info

Publication number: CH586984A5
Authority: CH; Switzerland

Application number

CH1722074A

Original Assignee

Ibm

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.)

1974-12-23

Filing date

1974-12-23

Publication date

1977-04-15

1946-03-29 Priority to FR939057D priority Critical patent/FR939057A/fr

1974-12-23 Application filed by Ibm filed Critical Ibm

1974-12-23 Priority to CH1722074A priority patent/CH586984A5/xx

1975-10-31 Priority to GB4527575A priority patent/GB1481750A/en

1975-11-10 Priority to FR7535236A priority patent/FR2296339A1/fr

1975-11-19 Priority to DE19752551816 priority patent/DE2551816C3/de

1975-11-28 Priority to IT2975975A priority patent/IT1049925B/it

1975-12-19 Priority to JP15069275A priority patent/JPS5186904A/ja

1977-04-15 Publication of CH586984A5 publication Critical patent/CH586984A5/xx

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)
Devices For Supply Of Signal Current (AREA)
Interface Circuits In Exchanges (AREA)

CH1722074A 1972-09-18 1974-12-23 CH586984A5 (de)

Priority Applications (7)

Application Number	Priority Date	Filing Date	Title
FR939057D FR939057A (fr)	1972-09-18	1946-03-29	Redresseurs
CH1722074A CH586984A5 (de)	1974-12-23	1974-12-23
GB4527575A GB1481750A (en)	1974-12-23	1975-10-31	Subscriber line interface circuit
FR7535236A FR2296339A1 (fr)	1974-12-23	1975-11-10	Circuit d'interface de ligne d'abonne
DE19752551816 DE2551816C3 (de)	1974-12-23	1975-11-19	Teiinehmerleitungs-Anschlußschaltung
IT2975975A IT1049925B (it)	1974-12-23	1975-11-28	Circuito d interfaccia di linea di abbonato
JP15069275A JPS5186904A (ja)	1974-12-23	1975-12-19	Kanyushakaisenintaafueisukairo

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH1722074A CH586984A5 (de)	1974-12-23	1974-12-23

Publications (1)

Publication Number	Publication Date
CH586984A5 true CH586984A5 (de)	1977-04-15

Family

ID=4423697

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH1722074A CH586984A5 (de)	1972-09-18	1974-12-23

Country Status (6)

Country	Link
JP (1)	JPS5186904A (de)
CH (1)	CH586984A5 (de)
DE (1)	DE2551816C3 (de)
FR (1)	FR2296339A1 (de)
GB (1)	GB1481750A (de)
IT (1)	IT1049925B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5413715A (en) *	1977-07-01	1979-02-01	Nippon Telegr & Teleph Corp <Ntt>	Four-wire switching system
JPS5494811A (en) *	1978-01-11	1979-07-26	Hitachi Ltd	Supply system for channel current
JPS5494810A (en) *	1978-01-11	1979-07-26	Hitachi Ltd	Supply system for channel current
FR2414832A1 (fr) *	1978-01-13	1979-08-10	Labo Cent Telecommunicat	Pont d'alimentation pour ligne telephonique
IT1159706B (it) *	1978-06-02	1987-03-04	Cselt Centro Studi Lab Telecom	Circuito telefonico elettronico di linea d'utente
NL7810086A (nl) *	1978-10-06	1980-04-09	Philips Nv	Voedingsbrug voor een abonneestroomloop.
US4254305A (en) *	1979-02-07	1981-03-03	International Telephone And Telegraph Corporation	Current limited subscriber line feed circuit
FR2460078B1 (fr) *	1979-06-25	1986-12-12	Trt Telecom Radio Electr	Joncteur d'abonne electronique
CA1157175A (en) *	1981-02-20	1983-11-15	Mitel Corporation	Power saving line circuit
DE3214624C2 (de) *	1982-04-20	1986-05-28	Siemens AG, 1000 Berlin und 8000 München	Schaltungsanordnung zur Auswertung von Teilnehmerschleifenzuständen in Fernsprechanlagen, insbesondere in Fernsprechnebenstellenanlagen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3649769A (en) *	1970-10-28	1972-03-14	Gen Electric	Circuit for supplying direct current to a telephone line

1974
- 1974-12-23 CH CH1722074A patent/CH586984A5/xx not_active IP Right Cessation
1975
- 1975-10-31 GB GB4527575A patent/GB1481750A/en not_active Expired
- 1975-11-10 FR FR7535236A patent/FR2296339A1/fr active Granted
- 1975-11-19 DE DE19752551816 patent/DE2551816C3/de not_active Expired
- 1975-11-28 IT IT2975975A patent/IT1049925B/it active
- 1975-12-19 JP JP15069275A patent/JPS5186904A/ja active Granted

Also Published As

Publication number	Publication date
IT1049925B (it)	1981-02-10
JPS5186904A (ja)	1976-07-30
GB1481750A (en)	1977-08-03
FR2296339B1 (de)	1981-12-31
JPS5619784B2 (de)	1981-05-09
FR2296339A1 (fr)	1976-07-23
DE2551816A1 (de)	1976-06-24
DE2551816B2 (de)	1979-06-13
DE2551816C3 (de)	1980-10-30

Publication	Publication Date	Title
FR2296339B1 (de)	1981-12-31
AU7099174A (de)	1976-01-08
AU8191875A (de)	1976-12-09
AU480879A (de)	1975-07-31
AU480981A (de)	1976-05-27
AU481597A (de)	1975-08-07
AU482110A (de)	1975-02-12
AU482114A (de)	1975-02-27
AU482309A (de)	1976-01-08
BE827400A (de)	1975-07-16
BE833996A (de)	1976-01-16
BG19668A1 (de)	1975-12-20
BG19713A1 (de)	1975-10-10
BG19766A1 (de)	1975-10-10
BG19773A1 (de)	1975-10-10
BG20028A1 (de)	1975-10-30
BG20432A1 (de)	1975-12-05
BG20468A1 (de)	1975-12-05
BG20509A1 (de)	1975-12-05
BG20519A1 (de)	1975-12-05
BG20663A1 (de)	1975-12-20
BG20744A1 (de)	1975-12-20
BG20866A1 (de)	1976-01-20
BG20895A1 (de)	1976-01-20
BG20899A1 (de)	1976-01-20

Legal Events

Date	Code	Title	Description
1985-08-30	PL	Patent ceased
2024-10-31	PL	Patent ceased