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FR2334113A1 - LINE CURRENT DETECTION CIRCUIT - Google Patents

LINE CURRENT DETECTION CIRCUIT

Info

Publication number
FR2334113A1
FR2334113A1 FR7536924A FR7536924A FR2334113A1 FR 2334113 A1 FR2334113 A1 FR 2334113A1 FR 7536924 A FR7536924 A FR 7536924A FR 7536924 A FR7536924 A FR 7536924A FR 2334113 A1 FR2334113 A1 FR 2334113A1
Authority
FR
France
Prior art keywords
detection circuit
current detection
line current
line
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.)
Granted
Application number
FR7536924A
Other languages
French (fr)
Other versions
FR2334113B1 (en
Inventor
Andre Migaud
Pierre Henri Cogne
Chantal Marie Alice Ciavaldini
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.)
Constr Telephoniques
Original Assignee
Constr Telephoniques
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 Constr Telephoniques filed Critical Constr Telephoniques
Priority to FR7536924A priority Critical patent/FR2334113A1/en
Priority to GB4918476A priority patent/GB1516049A/en
Priority to BE2055500A priority patent/BE848968R/en
Publication of FR2334113A1 publication Critical patent/FR2334113A1/en
Application granted granted Critical
Publication of FR2334113B1 publication Critical patent/FR2334113B1/fr
Granted 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)
FR7536924A 1975-12-03 1975-12-03 LINE CURRENT DETECTION CIRCUIT Granted FR2334113A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7536924A FR2334113A1 (en) 1975-12-03 1975-12-03 LINE CURRENT DETECTION CIRCUIT
GB4918476A GB1516049A (en) 1975-12-03 1976-11-25 Line current detention circuit
BE2055500A BE848968R (en) 1975-12-03 1976-12-02 LOOP STATUS DETECTOR PER TELEPHONE LINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7536924A FR2334113A1 (en) 1975-12-03 1975-12-03 LINE CURRENT DETECTION CIRCUIT

Publications (2)

Publication Number Publication Date
FR2334113A1 true FR2334113A1 (en) 1977-07-01
FR2334113B1 FR2334113B1 (en) 1980-05-23

Family

ID=9163243

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536924A Granted FR2334113A1 (en) 1975-12-03 1975-12-03 LINE CURRENT DETECTION CIRCUIT

Country Status (3)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516660A1 (en) * 1981-11-17 1983-05-20 Telemecanique Electrique Current detector for relay control from electronic processor - has opto-electronic coupler using LED supplied by voltage drop across silicon diodes connected in series within relay circuit
FR2557412A1 (en) * 1983-12-23 1985-06-28 Cit Alcatel Two-wire subscriber junctor test device.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60518A (en) * 1983-06-16 1985-01-05 Hayashibara Takeshi Device for responding dropped voltage at nonlinear section of diode
DE10219056A1 (en) * 2002-04-24 2003-11-13 Demag Cranes & Components Gmbh Bus driver for bidirectional two-wire bus systems

Citations (4)

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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2131038A5 (en) * 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 (en) * 1973-09-12 1975-01-09 Telefonbau & Normalzeit Gmbh Circuit arrangement for detecting loop states

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/73 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516660A1 (en) * 1981-11-17 1983-05-20 Telemecanique Electrique Current detector for relay control from electronic processor - has opto-electronic coupler using LED supplied by voltage drop across silicon diodes connected in series within relay circuit
FR2557412A1 (en) * 1983-12-23 1985-06-28 Cit Alcatel Two-wire subscriber junctor test device.

Also Published As

Publication number Publication date
FR2334113B1 (en) 1980-05-23
BE848968R (en) 1977-06-02
GB1516049A (en) 1978-06-28

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Legal Events

Date Code Title Description
TP Transmission of property