GB1435188A - Electric discharge tube including a composite anode - Google Patents

Electric discharge tube including a composite anode

Info

Publication number
GB1435188A
GB1435188A GB5906373A GB5906373A GB1435188A GB 1435188 A GB1435188 A GB 1435188A GB 5906373 A GB5906373 A GB 5906373A GB 5906373 A GB5906373 A GB 5906373A GB 1435188 A GB1435188 A GB 1435188A
Authority
GB
United Kingdom
Prior art keywords
parts
anode
anodes
composite anode
discharge tube
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
GB5906373A
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 GB1435188A publication Critical patent/GB1435188A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/74—Cooling arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0013—Sealed electrodes

Landscapes

  • Lasers (AREA)

Abstract

1435188 Thermionic valves PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 Dec 1973 [29 Dec 1972] 59063/73 Heading H1D A discharge tube includes a composite anode comprising a pair of inner anodes 6 and an outer anode 7, parts of the inner and outer anodes abutting and having a total emissivity of more than 60% at 500‹ C. These parts of the inner anodes have surfaces of sintered or carbonized Ni or Ni plated Fe. These parts of the outer anode comprise A1 coated Fe. The high emissivity increases heat transfer between abutting parts and reduces temperature gradients and the associated distortion. Parts 6 are spot welded together to form an inner anode. This is dipped in a suspension of NiO in nitrocellulose and fixed to at 750‹ C. in N 2 and H 2 to convert the NiO to a Ni coating. The inner and outer anodes are secured together by lugs 10. The composite anode is used in a beam tetrode and enclosed a central cathode surrounded by control and screen grids and beam electrodes.
GB5906373A 1972-12-29 1973-12-20 Electric discharge tube including a composite anode Expired GB1435188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7217782A NL7217782A (en) 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1435188A true GB1435188A (en) 1976-05-12

Family

ID=19817647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5906373A Expired GB1435188A (en) 1972-12-29 1973-12-20 Electric discharge tube including a composite anode

Country Status (8)

Country Link
US (1) US3866076A (en)
JP (1) JPS4999262A (en)
CA (1) CA1003889A (en)
DE (1) DE2361309A1 (en)
FR (1) FR2212633B1 (en)
GB (1) GB1435188A (en)
IT (1) IT1000634B (en)
NL (1) NL7217782A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892113A (en) * 1958-05-12 1959-06-23 Engelhard Ind Inc Electrical discharge lamp
US3254260A (en) * 1962-12-27 1966-05-31 Philips Corp Electron discharge device for very high frequencies
US3586100A (en) * 1968-09-28 1971-06-22 Nippon Electric Co Heat dissipating devices for the collectors of electron-beam tube
US3567982A (en) * 1968-12-23 1971-03-02 Sylvania Electric Prod Electron discharge device anode fin having heat distortion preventive means incorporated therein
US3641381A (en) * 1970-02-24 1972-02-08 Gen Electric Electron discharge device
US3641380A (en) * 1970-02-24 1972-02-08 Gen Electric Anode electrode for electron discharge device

Also Published As

Publication number Publication date
DE2361309A1 (en) 1974-07-04
US3866076A (en) 1975-02-11
IT1000634B (en) 1976-04-10
NL7217782A (en) 1974-07-02
FR2212633A1 (en) 1974-07-26
JPS4999262A (en) 1974-09-19
FR2212633B1 (en) 1976-10-08
CA1003889A (en) 1977-01-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee