GB1516049A - Line current detention circuit - Google Patents

Line current detention circuit

Info

Publication number
GB1516049A
GB1516049A GB4918476A GB4918476A GB1516049A GB 1516049 A GB1516049 A GB 1516049A GB 4918476 A GB4918476 A GB 4918476A GB 4918476 A GB4918476 A GB 4918476A GB 1516049 A GB1516049 A GB 1516049A
Authority
GB
United Kingdom
Prior art keywords
line current
line
photo
detention circuit
circuit
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
GB4918476A
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 GB1516049A publication Critical patent/GB1516049A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/14—Indicating direction of current; Indicating polarity of voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/15—Indicating the presence of current

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB4918476A 1975-12-03 1976-11-25 Line current detention circuit Expired GB1516049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7536924A FR2334113A1 (fr) 1975-12-03 1975-12-03 Circuit de detection de courant circulant dans une ligne

Publications (1)

Publication Number Publication Date
GB1516049A true GB1516049A (en) 1978-06-28

Family

ID=9163243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4918476A Expired GB1516049A (en) 1975-12-03 1976-11-25 Line current detention circuit

Country Status (3)

Country Link
BE (1) BE848968R (enExample)
FR (1) FR2334113A1 (enExample)
GB (1) GB1516049A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144281A (en) * 1983-06-16 1985-02-27 Hayashibara Ken A device for regulating ac current
EP1357715A3 (de) * 2002-04-24 2006-02-08 Demag Cranes & Components GmbH Bustreiber für bidirektionale Zweidrahtbussysteme

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516660A1 (fr) * 1981-11-17 1983-05-20 Telemecanique Electrique Dispositif de detection du courant dans un circuit de puissance ayant une charge variable, utilisant une diode electroluminescente associee a un photorecepteur
FR2557412B1 (fr) * 1983-12-23 1990-07-27 Cit Alcatel Dispositif d'essais de joncteurs d'abonnes deux fils

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2131038A5 (enExample) * 1971-03-30 1972-11-10 Ass Ouvriers Instr Preci
GB1414459A (en) * 1972-01-12 1975-11-19 Standard Telephones Cables Ltd Electronic relay
US3898389A (en) * 1972-10-18 1975-08-05 Communic Mfg Voltage and/or current-sensitive loop extender
DE2345880B1 (de) * 1973-09-12 1975-01-09 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zum Erfassen von Schleifenzustaenden

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144281A (en) * 1983-06-16 1985-02-27 Hayashibara Ken A device for regulating ac current
EP1357715A3 (de) * 2002-04-24 2006-02-08 Demag Cranes & Components GmbH Bustreiber für bidirektionale Zweidrahtbussysteme

Also Published As

Publication number Publication date
BE848968R (fr) 1977-06-02
FR2334113B1 (enExample) 1980-05-23
FR2334113A1 (fr) 1977-07-01

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee