FR2563396B1 - TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION - Google Patents

TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION

Info

Publication number
FR2563396B1
FR2563396B1 FR8406194A FR8406194A FR2563396B1 FR 2563396 B1 FR2563396 B1 FR 2563396B1 FR 8406194 A FR8406194 A FR 8406194A FR 8406194 A FR8406194 A FR 8406194A FR 2563396 B1 FR2563396 B1 FR 2563396B1
Authority
FR
France
Prior art keywords
wire
voltage
conversion circuit
electronic conversion
current reaction
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
FR8406194A
Other languages
French (fr)
Other versions
FR2563396A1 (en
Inventor
Joel Serge Gerard Colardelle
Pierre Girard
Claude Paul Henri Lerouge
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR8406194A priority Critical patent/FR2563396B1/en
Publication of FR2563396A1 publication Critical patent/FR2563396A1/en
Application granted granted Critical
Publication of FR2563396B1 publication Critical patent/FR2563396B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
FR8406194A 1984-04-19 1984-04-19 TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION Expired FR2563396B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8406194A FR2563396B1 (en) 1984-04-19 1984-04-19 TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8406194A FR2563396B1 (en) 1984-04-19 1984-04-19 TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION

Publications (2)

Publication Number Publication Date
FR2563396A1 FR2563396A1 (en) 1985-10-25
FR2563396B1 true FR2563396B1 (en) 1986-10-24

Family

ID=9303306

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8406194A Expired FR2563396B1 (en) 1984-04-19 1984-04-19 TWO-WIRE-FOUR ELECTRONIC CONVERSION CIRCUIT WITH VOLTAGE-CURRENT REACTION

Country Status (1)

Country Link
FR (1) FR2563396B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1762510A1 (en) * 1968-06-28 1970-05-14 Gademann Dipl Ing Walter Telephone microphone assembly, contact microphone and transistor
JPS5947508B2 (en) * 1977-02-04 1984-11-19 株式会社東芝 side sound protection circuit
US4303805A (en) * 1979-05-21 1981-12-01 United Networks, Inc. Subscriber station network

Also Published As

Publication number Publication date
FR2563396A1 (en) 1985-10-25

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Legal Events

Date Code Title Description
ST Notification of lapse