GB662222A - Arrangement for signalling over a two wire line - Google Patents

Arrangement for signalling over a two wire line

Info

Publication number
GB662222A
GB662222A GB28196/49A GB2819649A GB662222A GB 662222 A GB662222 A GB 662222A GB 28196/49 A GB28196/49 A GB 28196/49A GB 2819649 A GB2819649 A GB 2819649A GB 662222 A GB662222 A GB 662222A
Authority
GB
United Kingdom
Prior art keywords
resistance
loop
tubes
current
voltage
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
GB28196/49A
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB662222A publication Critical patent/GB662222A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G08C19/025—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage using fixed values of magnitude of current or voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Interface Circuits In Exchanges (AREA)
GB28196/49A 1948-11-05 1949-11-03 Arrangement for signalling over a two wire line Expired GB662222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE662222X 1948-11-05

Publications (1)

Publication Number Publication Date
GB662222A true GB662222A (en) 1951-12-05

Family

ID=20314368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28196/49A Expired GB662222A (en) 1948-11-05 1949-11-03 Arrangement for signalling over a two wire line

Country Status (2)

Country Link
GB (1) GB662222A (enrdf_load_stackoverflow)
NL (3) NL89622C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL149374B (nl)
NL149734B (nl)
NL89622C (enrdf_load_stackoverflow)

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