AU4939279A - Line current regulation in d.c. keyed telegraphy system - Google Patents

Line current regulation in d.c. keyed telegraphy system

Info

Publication number
AU4939279A
AU4939279A AU49392/79A AU4939279A AU4939279A AU 4939279 A AU4939279 A AU 4939279A AU 49392/79 A AU49392/79 A AU 49392/79A AU 4939279 A AU4939279 A AU 4939279A AU 4939279 A AU4939279 A AU 4939279A
Authority
AU
Australia
Prior art keywords
keyed
line current
current regulation
telegraphy system
telegraphy
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
AU49392/79A
Other versions
AU532161B2 (en
Inventor
Oskar Hotzel
Norbert Skobranek
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of AU4939279A publication Critical patent/AU4939279A/en
Application granted granted Critical
Publication of AU532161B2 publication Critical patent/AU532161B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H04L25/027—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling specifically for telegraph signals
    • 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
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/028—Arrangements specific to the transmitter end
    • 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
    • H04L25/12—Compensating for variations in line impedance
    • 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
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
    • H04L25/0274—Arrangements for ensuring balanced coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Dc Digital Transmission (AREA)
AU49392/79A 1978-08-01 1979-07-31 Line current regulation in d.c. keyed telegraphy system Ceased AU532161B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2833732A DE2833732C2 (en) 1978-08-01 1978-08-01 Circuit arrangement for the transmission of direct current telegraph characters
DE28337328 1978-08-01

Publications (2)

Publication Number Publication Date
AU4939279A true AU4939279A (en) 1980-02-07
AU532161B2 AU532161B2 (en) 1983-09-22

Family

ID=6045956

Family Applications (1)

Application Number Title Priority Date Filing Date
AU49392/79A Ceased AU532161B2 (en) 1978-08-01 1979-07-31 Line current regulation in d.c. keyed telegraphy system

Country Status (5)

Country Link
EP (1) EP0007578B1 (en)
JP (1) JPS55109061A (en)
AU (1) AU532161B2 (en)
DE (2) DE2833732C2 (en)
IN (1) IN149671B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035379C3 (en) * 1970-07-16 1975-10-09 Siemens Ag Circuit arrangement for setting the line current in telegraph subscriber connection circuits of a switching system
BE787088A (en) * 1971-08-02 1973-02-02 Siemens Ag INSTALLATION FOR HANDLING SINGLE CURRENT CIRCUITS ON TWO-WIRE LINES
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
DE2358003C3 (en) * 1973-11-21 1982-02-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for level conversion of logical signals

Also Published As

Publication number Publication date
EP0007578A1 (en) 1980-02-06
IN149671B (en) 1982-03-06
AU532161B2 (en) 1983-09-22
DE2833732C2 (en) 1981-12-03
EP0007578B1 (en) 1982-11-24
DE2964096D1 (en) 1982-12-30
DE2833732A1 (en) 1980-02-14
JPS55109061A (en) 1980-08-21

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