ZA724629B - Electronic telegraph tramission relay - Google Patents

Electronic telegraph tramission relay

Info

Publication number
ZA724629B
ZA724629B ZA724629A ZA724629A ZA724629B ZA 724629 B ZA724629 B ZA 724629B ZA 724629 A ZA724629 A ZA 724629A ZA 724629 A ZA724629 A ZA 724629A ZA 724629 B ZA724629 B ZA 724629B
Authority
ZA
South Africa
Prior art keywords
tramission
relay
electronic telegraph
telegraph
electronic
Prior art date
Application number
ZA724629A
Inventor
M Clerc
M Iatropoulos
Original Assignee
Standard Telephones Cables 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
Application filed by Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of ZA724629B publication Critical patent/ZA724629B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/665—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to one load terminal only
    • H03K17/666—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to one load terminal only the output circuit comprising more than one controlled bipolar transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
    • H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Emergency Protection Circuit Devices (AREA)
ZA724629A 1971-07-16 1972-07-05 Electronic telegraph tramission relay ZA724629B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7126051A FR2146091B1 (en) 1971-07-16 1971-07-16

Publications (1)

Publication Number Publication Date
ZA724629B true ZA724629B (en) 1973-03-28

Family

ID=9080452

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA724629A ZA724629B (en) 1971-07-16 1972-07-05 Electronic telegraph tramission relay

Country Status (8)

Country Link
CA (1) CA966427A (en)
DE (1) DE2234501A1 (en)
ES (1) ES404908A1 (en)
FR (1) FR2146091B1 (en)
GB (1) GB1353429A (en)
IT (1) IT962474B (en)
NL (1) NL7209560A (en)
ZA (1) ZA724629B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310940C3 (en) * 1973-03-05 1979-05-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for connecting telegraph subscribers to AC transmission equipment and switching systems
FR2471080A1 (en) * 1979-11-28 1981-06-12 Ibm France INTERFACE CIRCUIT CONFORMING TO EIA STANDARDS REALIZED FROM AN OPERATIONAL AMPLIFIER
AU2012101415B4 (en) * 2012-09-13 2012-12-06 Gerard Lighting Holdings Pty Ltd Overvoltage Protection Circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR91357E (en) * 1964-03-04 1968-10-23
DE1290562C2 (en) * 1965-03-23 1976-09-23 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR TRANSFERRING DC IMPULSES

Also Published As

Publication number Publication date
DE2234501A1 (en) 1973-01-25
FR2146091B1 (en) 1976-05-28
GB1353429A (en) 1974-05-15
NL7209560A (en) 1973-01-18
FR2146091A1 (en) 1973-03-02
CA966427A (en) 1975-04-22
IT962474B (en) 1973-12-20
AU4438672A (en) 1974-01-17
ES404908A1 (en) 1975-06-16

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