GB1404570A - Circuit for extracting power from a current-carrying line - Google Patents

Circuit for extracting power from a current-carrying line

Info

Publication number
GB1404570A
GB1404570A GB5966571A GB5966571A GB1404570A GB 1404570 A GB1404570 A GB 1404570A GB 5966571 A GB5966571 A GB 5966571A GB 5966571 A GB5966571 A GB 5966571A GB 1404570 A GB1404570 A GB 1404570A
Authority
GB
United Kingdom
Prior art keywords
volts
diode
transistor
circuit
current
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
GB5966571A
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
Original Assignee
Thorn Ericsson Telecommunications Mfg 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
Priority to BE793286D priority Critical patent/BE793286A/en
Application filed by Thorn Ericsson Telecommunications Mfg Ltd filed Critical Thorn Ericsson Telecommunications Mfg Ltd
Priority to GB5966571A priority patent/GB1404570A/en
Priority to DE19722262376 priority patent/DE2262376C3/en
Priority to NL7217612A priority patent/NL7217612A/xx
Priority to IT3347172A priority patent/IT972818B/en
Priority to SE1690772A priority patent/SE385069B/en
Publication of GB1404570A publication Critical patent/GB1404570A/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)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

1404570 Substation circuits THORNERICSSON TELECOMMUNICATIONS (MFG) Ltd 11 Dec 1972 [22 Dec 1971] 59665/71 Heading H4K Power is derived from a subscribers line by means of a circuit consisting of two parallel opposed paths 26, 24 and 30, 28 respectively, each containing a diode and a transistor, one (negative) output terminal 32 being connected to the common junction of the diodes and transistors and the other (positive) output terminal being connected to the other electrode of the currently conductive diode. For a current flow from terminal 20 to 22, diode 26 and hence transistor 24 are conductive so that a useable voltage of approximately 0À7 volts is developed across diode 26. This may be used, as shown, for enabling transistor 52 of a blocking oscillator in the subset. For current in the opposite direction, oscillator transistor 54 would be enabled. The polarity insensitive circuit is said to drop only 0À7 volts for the diode plus 0À05 volts for the transistor as opposed to a conventional full wave bridge which drops 2À1 volts of which only the 0À7 volts for the load circuit is useful.
GB5966571A 1971-12-22 1971-12-22 Circuit for extracting power from a current-carrying line Expired GB1404570A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE793286D BE793286A (en) 1971-12-22 CIRCUIT FOR TAKING ENERGY FROM A LINE IN WHICH A CURRENT PASSES
GB5966571A GB1404570A (en) 1971-12-22 1971-12-22 Circuit for extracting power from a current-carrying line
DE19722262376 DE2262376C3 (en) 1971-12-22 1972-12-20 Circuit for drawing power from a live line
NL7217612A NL7217612A (en) 1971-12-22 1972-12-22
IT3347172A IT972818B (en) 1971-12-22 1972-12-22 POWER WITHDRAWAL CIRCUIT FROM A CURRENT TRANSPORT LINE
SE1690772A SE385069B (en) 1971-12-22 1972-12-22 CURRENT CIRCUIT FOR RECOVERING DIRECTION ENERGY FROM A POWER LEADING PIPE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5966571A GB1404570A (en) 1971-12-22 1971-12-22 Circuit for extracting power from a current-carrying line

Publications (1)

Publication Number Publication Date
GB1404570A true GB1404570A (en) 1975-09-03

Family

ID=10484182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5966571A Expired GB1404570A (en) 1971-12-22 1971-12-22 Circuit for extracting power from a current-carrying line

Country Status (6)

Country Link
BE (1) BE793286A (en)
DE (1) DE2262376C3 (en)
GB (1) GB1404570A (en)
IT (1) IT972818B (en)
NL (1) NL7217612A (en)
SE (1) SE385069B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1211072B (en) * 1981-06-30 1989-09-29 Ates Componenti Elettron BRIDGE TRANSISTOR RECTIFIER CIRCUIT FOR TELEPHONE USE.
IT1212518B (en) * 1982-01-29 1989-11-22 Ates Componenti Elettron BRIDGE TRANSISTOR RECTIFIER CIRCUIT, WITH OVERCURRENT PROTECTION, FOR TELEPHONE USE.
US7001594B1 (en) 2000-10-10 2006-02-21 The Procter & Gamble Company Scalp cosmetic compositions and corresponding methods of application to provide scalp moisturization and skin active benefits

Also Published As

Publication number Publication date
IT972818B (en) 1974-05-31
DE2262376B2 (en) 1978-07-06
DE2262376A1 (en) 1973-06-28
BE793286A (en) 1973-04-16
DE2262376C3 (en) 1979-03-15
SE385069B (en) 1976-05-31
NL7217612A (en) 1973-06-26

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Legal Events

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