GB684559A - Improvements in or relating to circuit-arrangements for use in automatic signalling apparatus, for example, in telephone systems - Google Patents

Improvements in or relating to circuit-arrangements for use in automatic signalling apparatus, for example, in telephone systems

Info

Publication number
GB684559A
GB684559A GB10348/49A GB1034849A GB684559A GB 684559 A GB684559 A GB 684559A GB 10348/49 A GB10348/49 A GB 10348/49A GB 1034849 A GB1034849 A GB 1034849A GB 684559 A GB684559 A GB 684559A
Authority
GB
United Kingdom
Prior art keywords
electrode
potential
voltage
relay
cathode
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
GB10348/49A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB684559A publication Critical patent/GB684559A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Radiation-Therapy Devices (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
GB10348/49A 1948-04-20 1949-04-19 Improvements in or relating to circuit-arrangements for use in automatic signalling apparatus, for example, in telephone systems Expired GB684559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL278794X 1948-04-20

Publications (1)

Publication Number Publication Date
GB684559A true GB684559A (en) 1952-12-17

Family

ID=19782225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10348/49A Expired GB684559A (en) 1948-04-20 1949-04-19 Improvements in or relating to circuit-arrangements for use in automatic signalling apparatus, for example, in telephone systems

Country Status (5)

Country Link
CH (1) CH278794A (instruction)
DE (1) DE822563C (instruction)
FR (1) FR984829A (instruction)
GB (1) GB684559A (instruction)
NL (1) NL72037C (instruction)

Also Published As

Publication number Publication date
FR984829A (fr) 1951-07-11
CH278794A (de) 1951-10-31
NL72037C (instruction)
DE822563C (de) 1951-11-26

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