GB1525210A - Line power supply circuit for telephone subscriber equipment - Google Patents

Line power supply circuit for telephone subscriber equipment

Info

Publication number
GB1525210A
GB1525210A GB29320/77A GB2932077A GB1525210A GB 1525210 A GB1525210 A GB 1525210A GB 29320/77 A GB29320/77 A GB 29320/77A GB 2932077 A GB2932077 A GB 2932077A GB 1525210 A GB1525210 A GB 1525210A
Authority
GB
United Kingdom
Prior art keywords
line
supply circuit
current
july
capacitor
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
GB29320/77A
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.)
Nokia Inc
Original Assignee
Nokia 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 Nokia Inc filed Critical Nokia Inc
Publication of GB1525210A publication Critical patent/GB1525210A/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
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
GB29320/77A 1976-07-27 1977-07-13 Line power supply circuit for telephone subscriber equipment Expired GB1525210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7622844A FR2366755A1 (fr) 1976-07-27 1976-07-27 Telealimentation d'un equipement situe a l'extremite d'une ligne telephonique, cote abonne

Publications (1)

Publication Number Publication Date
GB1525210A true GB1525210A (en) 1978-09-20

Family

ID=9176192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29320/77A Expired GB1525210A (en) 1976-07-27 1977-07-13 Line power supply circuit for telephone subscriber equipment

Country Status (3)

Country Link
FR (1) FR2366755A1 (enExample)
GB (1) GB1525210A (enExample)
ZA (1) ZA774382B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647787A (en) * 1985-02-04 1987-03-03 Gte Communication Systems Corp. Backup battery power supply for microprocessor based telephones
GB2183964B (en) * 1985-11-28 1989-10-11 Stc Plc Telephone power supply

Also Published As

Publication number Publication date
ZA774382B (en) 1978-06-28
FR2366755A1 (fr) 1978-04-28
FR2366755B1 (enExample) 1980-09-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930713