CA973804A - Telegraphic keying circuits - Google Patents

Telegraphic keying circuits

Info

Publication number
CA973804A
CA973804A CA148,400A CA148400A CA973804A CA 973804 A CA973804 A CA 973804A CA 148400 A CA148400 A CA 148400A CA 973804 A CA973804 A CA 973804A
Authority
CA
Canada
Prior art keywords
keying circuits
telegraphic keying
telegraphic
circuits
keying
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
CA148,400A
Inventor
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
Application granted granted Critical
Publication of CA973804A publication Critical patent/CA973804A/en
Expired 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
    • H04L25/028—Arrangements specific to the transmitter end
    • H04L25/0282—Provision for current-mode coupling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Dc Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
CA148,400A 1971-08-02 1972-08-01 Telegraphic keying circuits Expired CA973804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2138576A DE2138576C3 (en) 1971-08-02 1971-08-02 Converter circuit for transmitting direct current telegraphic characters

Publications (1)

Publication Number Publication Date
CA973804A true CA973804A (en) 1975-09-02

Family

ID=5815523

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,400A Expired CA973804A (en) 1971-08-02 1972-08-01 Telegraphic keying circuits

Country Status (16)

Country Link
JP (1) JPS5238683B2 (en)
AT (1) AT323246B (en)
AU (1) AU459938B2 (en)
BE (1) BE787088A (en)
BR (1) BR7205196D0 (en)
CA (1) CA973804A (en)
CH (1) CH542556A (en)
DE (1) DE2138576C3 (en)
DK (1) DK144109C (en)
FR (1) FR2148210B1 (en)
GB (1) GB1363553A (en)
IT (1) IT963475B (en)
LU (1) LU65824A1 (en)
NL (1) NL7209920A (en)
SE (1) SE373252B (en)
ZA (1) ZA724772B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124377U (en) * 1973-02-28 1974-10-24
JPS5494218A (en) * 1978-01-09 1979-07-25 Fuji Electric Co Ltd Dc pulse read-in circuit
DE2833732C2 (en) * 1978-08-01 1981-12-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for the transmission of direct current telegraph characters

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090253B (en) * 1959-07-17 1960-10-06 Siemens Ag Circuit arrangement for telephone subscriber stations with indirect control of the receiving magnet
DE1216919B (en) * 1966-01-25 1966-05-18 Telefunken Patent Circuit arrangement to keep the current constant and to guarantee the zero line symmetry of double-stream telegraphic characters
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

Also Published As

Publication number Publication date
IT963475B (en) 1974-01-10
AT323246B (en) 1975-06-25
DK144109B (en) 1981-12-07
DE2138576B2 (en) 1977-09-01
SE373252B (en) 1975-01-27
DK144109C (en) 1982-05-24
LU65824A1 (en) 1973-01-31
JPS4825403A (en) 1973-04-03
JPS5238683B2 (en) 1977-09-30
FR2148210B1 (en) 1977-07-29
AU459938B2 (en) 1975-04-10
BR7205196D0 (en) 1973-05-29
CH542556A (en) 1973-09-30
BE787088A (en) 1973-02-02
DE2138576C3 (en) 1978-05-11
NL7209920A (en) 1973-02-06
AU4450472A (en) 1974-01-17
DE2138576A1 (en) 1973-02-22
ZA724772B (en) 1973-04-25
FR2148210A1 (en) 1973-03-11
GB1363553A (en) 1974-08-14

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