GB1525582A - Circuits for extracting power from a current-carrying lin - Google Patents

Circuits for extracting power from a current-carrying lin

Info

Publication number
GB1525582A
GB1525582A GB701575A GB701575A GB1525582A GB 1525582 A GB1525582 A GB 1525582A GB 701575 A GB701575 A GB 701575A GB 701575 A GB701575 A GB 701575A GB 1525582 A GB1525582 A GB 1525582A
Authority
GB
United Kingdom
Prior art keywords
line
circuit
circuits
lin
extracting power
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
GB701575A
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.)
Thorn Ericsson Telecommunications Mfg Ltd
Ericsson Ltd
Original Assignee
Thorn Ericsson Telecommunications Mfg Ltd
Thorn Ericsson Telecommunications Ltd
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 Thorn Ericsson Telecommunications Mfg Ltd, Thorn Ericsson Telecommunications Ltd filed Critical Thorn Ericsson Telecommunications Mfg Ltd
Priority to GB701575A priority Critical patent/GB1525582A/en
Priority to NL7601574A priority patent/NL7601574A/en
Priority to DE19762606226 priority patent/DE2606226A1/en
Priority to IT2025276A priority patent/IT1054871B/en
Priority to BE164440A priority patent/BE838715R/en
Publication of GB1525582A publication Critical patent/GB1525582A/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)
  • Amplifiers (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

1525582 Substation circuits THORN-ERICSSON TELECOMMUNICATIONS (MFG) Ltd 4 Feb 1976 [19 Feb 1975] 7015/75 Addition to 1404570 Heading H4K A circuit for extracting power from a line 20, 22 comprises transistors 24, 28 connected in series between the wires of the line, and voltage clamping means connected across the line 20, 22 to clamp the line voltage, the output of the circuit being taken between the wire 32 and one of the two line wires at 36 or 34 in dependence on the D.C. line polarity. The circuit may be used to power a D.C.-D.C. converter (Fig. 3, not shown) cf also the Parent Specification. The arrangement of 4 diodes 82, 80 may be replaced by a clamping circuit comprising a pair of back to back Zener diodes.
GB701575A 1975-02-19 1975-02-19 Circuits for extracting power from a current-carrying lin Expired GB1525582A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB701575A GB1525582A (en) 1975-02-19 1975-02-19 Circuits for extracting power from a current-carrying lin
NL7601574A NL7601574A (en) 1975-02-19 1976-02-16 CIRCUIT FOR WITHDRAWING POWER FROM A CURRENT PIPE.
DE19762606226 DE2606226A1 (en) 1975-02-19 1976-02-17 CIRCUIT FOR TAKING DIRECT CURRENT POWER FROM A CURRENT LINE
IT2025276A IT1054871B (en) 1975-02-19 1976-02-17 POWER WITHDRAWAL CIRCUIT FROM A CURRENT TRANSPORT LINE
BE164440A BE838715R (en) 1975-02-19 1976-02-19 CIRCUIT FOR TAKING ENERGY FROM A LINE IN WHICH A CURRENT FLIES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB701575A GB1525582A (en) 1975-02-19 1975-02-19 Circuits for extracting power from a current-carrying lin

Publications (1)

Publication Number Publication Date
GB1525582A true GB1525582A (en) 1978-09-20

Family

ID=9825015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB701575A Expired GB1525582A (en) 1975-02-19 1975-02-19 Circuits for extracting power from a current-carrying lin

Country Status (5)

Country Link
BE (1) BE838715R (en)
DE (1) DE2606226A1 (en)
GB (1) GB1525582A (en)
IT (1) IT1054871B (en)
NL (1) NL7601574A (en)

Also Published As

Publication number Publication date
DE2606226A1 (en) 1976-09-02
NL7601574A (en) 1976-08-23
BE838715R (en) 1976-06-16
IT1054871B (en) 1981-11-30

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Legal Events

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