GB1413860A - Electronic feeding bridge for a telephone line - Google Patents

Electronic feeding bridge for a telephone line

Info

Publication number
GB1413860A
GB1413860A GB5652173A GB5652173A GB1413860A GB 1413860 A GB1413860 A GB 1413860A GB 5652173 A GB5652173 A GB 5652173A GB 5652173 A GB5652173 A GB 5652173A GB 1413860 A GB1413860 A GB 1413860A
Authority
GB
United Kingdom
Prior art keywords
wires
circuit
line
telephone line
inductance
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
GB5652173A
Other languages
English (en)
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1413860A publication Critical patent/GB1413860A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
GB5652173A 1973-01-31 1973-12-06 Electronic feeding bridge for a telephone line Expired GB1413860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7303357A FR2216733B1 (enrdf_load_stackoverflow) 1973-01-31 1973-01-31

Publications (1)

Publication Number Publication Date
GB1413860A true GB1413860A (en) 1975-11-12

Family

ID=9114110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5652173A Expired GB1413860A (en) 1973-01-31 1973-12-06 Electronic feeding bridge for a telephone line

Country Status (4)

Country Link
FR (1) FR2216733B1 (enrdf_load_stackoverflow)
GB (1) GB1413860A (enrdf_load_stackoverflow)
IE (1) IE38728B1 (enrdf_load_stackoverflow)
ZA (1) ZA739295B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135854A (en) * 1983-02-10 1984-09-05 Robert James Redding Line-powered modem

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254167B2 (enrdf_load_stackoverflow) * 1973-12-10 1978-08-18 Labo Cent Telecommunicat
GB1560922A (en) * 1977-02-01 1980-02-13 Plessey Co Ltd Telephone systems
IT1159706B (it) * 1978-06-02 1987-03-04 Cselt Centro Studi Lab Telecom Circuito telefonico elettronico di linea d'utente

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391351A (fr) * 1964-04-21 1965-03-05 Philips Nv Circuit pour appliquer une tension à une charge
US3649769A (en) * 1970-10-28 1972-03-14 Gen Electric Circuit for supplying direct current to a telephone line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135854A (en) * 1983-02-10 1984-09-05 Robert James Redding Line-powered modem

Also Published As

Publication number Publication date
ZA739295B (en) 1974-10-30
FR2216733B1 (enrdf_load_stackoverflow) 1978-05-12
IE38728B1 (en) 1978-05-24
IE38728L (en) 1974-07-31
AU6438474A (en) 1975-07-10
FR2216733A1 (enrdf_load_stackoverflow) 1974-08-30

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee