GB1189940A - Magnetron Cathodes - Google Patents

Magnetron Cathodes

Info

Publication number
GB1189940A
GB1189940A GB51710/68A GB5171068A GB1189940A GB 1189940 A GB1189940 A GB 1189940A GB 51710/68 A GB51710/68 A GB 51710/68A GB 5171068 A GB5171068 A GB 5171068A GB 1189940 A GB1189940 A GB 1189940A
Authority
GB
United Kingdom
Prior art keywords
thermal
activated portion
magnetron cathodes
magnetrons
rhenium
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
GB51710/68A
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 GB1189940A publication Critical patent/GB1189940A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons

Landscapes

  • Microwave Tubes (AREA)
GB51710/68A 1967-11-03 1968-10-31 Magnetron Cathodes Expired GB1189940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676714947A NL153370B (nl) 1967-11-03 1967-11-03 Magnetron waarin het geactiveerde gedeelte van de kathode is opgesloten tussen ringen waarvan het oppervlak thermische emissie tegengaat.

Publications (1)

Publication Number Publication Date
GB1189940A true GB1189940A (en) 1970-04-29

Family

ID=19801629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51710/68A Expired GB1189940A (en) 1967-11-03 1968-10-31 Magnetron Cathodes

Country Status (5)

Country Link
US (1) US3555334A (nl)
DE (1) DE1803348A1 (nl)
FR (1) FR1591244A (nl)
GB (1) GB1189940A (nl)
NL (1) NL153370B (nl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2165703A1 (de) * 1971-12-30 1973-07-12 Hitachi Ltd Lochmasken fuer farbbildroehren
JPS50129763A (nl) * 1974-04-02 1975-10-14
US4349424A (en) * 1981-05-15 1982-09-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ion sputter textured graphite

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1897933A (en) * 1928-08-02 1933-02-14 Peoples Gas By Products Corp Electrode for electron discharge tubes and method of forming the same
US2683671A (en) * 1952-07-17 1954-07-13 Westinghouse Electric Corp Low primary and secondary electron emission surface
US3308329A (en) * 1962-11-23 1967-03-07 Litton Industries Inc Thermionic emissive cathode with end structure for emissive suppression

Also Published As

Publication number Publication date
US3555334A (en) 1971-01-12
DE1803348A1 (de) 1969-06-19
NL153370B (nl) 1977-05-16
NL6714947A (nl) 1969-05-06
FR1591244A (nl) 1970-04-27

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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