GB1188668A - Thermionic Cathode - Google Patents

Thermionic Cathode

Info

Publication number
GB1188668A
GB1188668A GB5790467A GB5790467A GB1188668A GB 1188668 A GB1188668 A GB 1188668A GB 5790467 A GB5790467 A GB 5790467A GB 5790467 A GB5790467 A GB 5790467A GB 1188668 A GB1188668 A GB 1188668A
Authority
GB
United Kingdom
Prior art keywords
layer
cathode
filament
porous
support
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
GB5790467A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1188668A publication Critical patent/GB1188668A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/24—Insulating layer or body located between heater and emissive material

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Resistance Heating (AREA)
GB5790467A 1966-12-23 1967-12-20 Thermionic Cathode Expired GB1188668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6618058A NL157743B (nl) 1966-12-23 1966-12-23 Indirect verhitte kathode.

Publications (1)

Publication Number Publication Date
GB1188668A true GB1188668A (en) 1970-04-22

Family

ID=19798531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5790467A Expired GB1188668A (en) 1966-12-23 1967-12-20 Thermionic Cathode

Country Status (9)

Country Link
AT (1) AT278183B (nl)
BE (1) BE708387A (nl)
CH (1) CH469346A (nl)
DK (1) DK118414B (nl)
ES (1) ES364237A1 (nl)
FR (1) FR1549006A (nl)
GB (1) GB1188668A (nl)
NL (1) NL157743B (nl)
NO (1) NO121225B (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118983A (en) * 1989-03-24 1992-06-02 Mitsubishi Denki Kabushiki Kaisha Thermionic electron source
US5170422A (en) * 1990-08-20 1992-12-08 Siemens Aktiengesellschaft Electron emitter for an x-ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118983A (en) * 1989-03-24 1992-06-02 Mitsubishi Denki Kabushiki Kaisha Thermionic electron source
US5170422A (en) * 1990-08-20 1992-12-08 Siemens Aktiengesellschaft Electron emitter for an x-ray tube

Also Published As

Publication number Publication date
NO121225B (nl) 1971-02-01
DE1614295B2 (de) 1976-02-12
NL157743B (nl) 1978-08-15
CH469346A (de) 1969-02-28
FR1549006A (nl) 1968-12-06
AT278183B (de) 1970-01-26
DE1614295A1 (de) 1970-08-20
BE708387A (nl) 1968-06-21
NL6618058A (nl) 1968-06-24
ES364237A1 (es) 1971-02-16
DK118414B (da) 1970-08-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee