FR2423930A1 - Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages - Google Patents

Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

Info

Publication number
FR2423930A1
FR2423930A1 FR7811838A FR7811838A FR2423930A1 FR 2423930 A1 FR2423930 A1 FR 2423930A1 FR 7811838 A FR7811838 A FR 7811838A FR 7811838 A FR7811838 A FR 7811838A FR 2423930 A1 FR2423930 A1 FR 2423930A1
Authority
FR
France
Prior art keywords
line
transmission system
signal transmission
limiters
telephone line
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.)
Pending
Application number
FR7811838A
Other languages
French (fr)
Inventor
Peter Gabler
Gunter Munsterberg
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
Priority to FR7811838A priority Critical patent/FR2423930A1/en
Publication of FR2423930A1 publication Critical patent/FR2423930A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/28—Reducing interference caused by currents induced in cable sheathing or armouring

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The signal transmission system allows signals to be transmitted via a line (e.g. a telephone line) subject to sudden overvoltages, (e.g. due to lightning) and provided with an earthed voltage arrester and an optoelectronic coupler at the receiver. The line (1tg) is coupled via a second optoelectronic coupler (OK1) to the transmitter (S). A signal amplifier (T) is connected between the line and the second optoelectronic coupler. Additional voltage limiting components Zener diode Z, diode D) shunt the line terminals and current limiters (resistors R3-R5) are connected in series with the line wire.
FR7811838A 1978-04-21 1978-04-21 Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages Pending FR2423930A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7811838A FR2423930A1 (en) 1978-04-21 1978-04-21 Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7811838A FR2423930A1 (en) 1978-04-21 1978-04-21 Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

Publications (1)

Publication Number Publication Date
FR2423930A1 true FR2423930A1 (en) 1979-11-16

Family

ID=9207440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811838A Pending FR2423930A1 (en) 1978-04-21 1978-04-21 Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

Country Status (1)

Country Link
FR (1) FR2423930A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704144B1 (en) * 1977-02-02 1978-03-02 Standard Elek K Lorenz Ag Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704144B1 (en) * 1977-02-02 1978-03-02 Standard Elek K Lorenz Ag Signal transmission system for telephone line - uses opto-electronic couplers and limiters to isolate lightning over voltages

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