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)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Radiation-Therapy Devices (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)
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 (fr)
DE (1) DE822563C (fr)
FR (1) FR984829A (fr)
GB (1) GB684559A (fr)
NL (1) NL72037C (fr)

Also Published As

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

Similar Documents

Publication Publication Date Title
US2591997A (en) Electron tube device
US2547386A (en) Current storage device utilizing semiconductor
GB675465A (en) Improvements in or relating to electron discharge apparatus
US2532738A (en) Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam
GB639191A (en) Improvements in electric beam switching devices
US2204055A (en) Telephone system
GB679725A (en) Improvements in or relating to cathode ray tubes
US2472779A (en) Cathode-ray tube amplifier
US2301748A (en) Electrical selective signaling system
GB684559A (en) Improvements in or relating to circuit-arrangements for use in automatic signalling apparatus, for example, in telephone systems
GB803221A (en) Improvements relating to electron guns
GB618430A (en) Improvements in electric discharge devices
US2237413A (en) Telephone system
US2617072A (en) Device for switching contact circuits for signaling purposes
US2616978A (en) Cathode-ray type selector switch circuit
US2654049A (en) Electron switch control system
GB660794A (en) Improvements in or relating to circuit-arrangements comprising a combination of at least two relays
US2533251A (en) Time base circuit for cathode-ray oscillographs
US2437266A (en) Translating device
US2657309A (en) Storage device utilizing semiconductor
US2416355A (en) Impulse generator circuits
US2644909A (en) Circuit-arrangement comprising a cathode-ray tube
US2483400A (en) Electronic switch
US2547215A (en) Circuit arrangement for transmitting a signaling voltage under control of an auxiliary voltage
GB654311A (en) Improvements in automatic telephone switching systems