GB549074A - Improvements in electrical signalling systems utilising trains of impulses for control purposes - Google Patents

Improvements in electrical signalling systems utilising trains of impulses for control purposes

Info

Publication number
GB549074A
GB549074A GB11926/42A GB1192642A GB549074A GB 549074 A GB549074 A GB 549074A GB 11926/42 A GB11926/42 A GB 11926/42A GB 1192642 A GB1192642 A GB 1192642A GB 549074 A GB549074 A GB 549074A
Authority
GB
United Kingdom
Prior art keywords
impulses
trains
control purposes
signalling systems
electrical signalling
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
GB11926/42A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co 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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Publication of GB549074A publication Critical patent/GB549074A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Relay Circuits (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
GB11926/42A 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes Expired GB549074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5514/41A GB549047A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes

Publications (1)

Publication Number Publication Date
GB549074A true GB549074A (en) 1942-11-04

Family

ID=9797640

Family Applications (3)

Application Number Title Priority Date Filing Date
GB11926/42A Expired GB549074A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes
GB5514/41A Expired GB549047A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes
GB16350/42A Expired GB550350A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB5514/41A Expired GB549047A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes
GB16350/42A Expired GB550350A (en) 1941-04-28 1941-04-28 Improvements in electrical signalling systems utilising trains of impulses for control purposes

Country Status (7)

Country Link
US (1) US2334591A (enExample)
BE (1) BE468430A (enExample)
CH (1) CH241317A (enExample)
DE (1) DE842361C (enExample)
FR (1) FR907461A (enExample)
GB (3) GB549074A (enExample)
NL (2) NL106092C (enExample)

Also Published As

Publication number Publication date
GB550350A (en) 1943-01-04
CH241317A (de) 1946-02-28
DE842361C (de) 1952-06-26
GB549047A (en) 1942-11-04
NL64857C (enExample)
NL106092C (enExample)
BE468430A (enExample)
US2334591A (en) 1943-11-16
FR907461A (fr) 1946-03-13

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