FR1273216A - Improvements to indirectly heated cathodes for electron tubes - Google Patents

Improvements to indirectly heated cathodes for electron tubes

Info

Publication number
FR1273216A
FR1273216A FR843473A FR843473A FR1273216A FR 1273216 A FR1273216 A FR 1273216A FR 843473 A FR843473 A FR 843473A FR 843473 A FR843473 A FR 843473A FR 1273216 A FR1273216 A FR 1273216A
Authority
FR
France
Prior art keywords
indirectly heated
electron tubes
heated cathodes
cathodes
tubes
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
FR843473A
Other languages
French (fr)
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to FR843473A priority Critical patent/FR1273216A/en
Application granted granted Critical
Publication of FR1273216A publication Critical patent/FR1273216A/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
FR843473A 1960-11-09 1960-11-09 Improvements to indirectly heated cathodes for electron tubes Expired FR1273216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR843473A FR1273216A (en) 1960-11-09 1960-11-09 Improvements to indirectly heated cathodes for electron tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR843473A FR1273216A (en) 1960-11-09 1960-11-09 Improvements to indirectly heated cathodes for electron tubes

Publications (1)

Publication Number Publication Date
FR1273216A true FR1273216A (en) 1961-10-06

Family

ID=8742397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR843473A Expired FR1273216A (en) 1960-11-09 1960-11-09 Improvements to indirectly heated cathodes for electron tubes

Country Status (1)

Country Link
FR (1) FR1273216A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181825B (en) * 1961-11-29 1964-11-19 Varian Associates Indirectly heated surface cathode for electron tubes
US4002884A (en) * 1974-01-30 1977-01-11 International Standard Electric Corporation Heater element for an indirectly heated cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181825B (en) * 1961-11-29 1964-11-19 Varian Associates Indirectly heated surface cathode for electron tubes
US4002884A (en) * 1974-01-30 1977-01-11 International Standard Electric Corporation Heater element for an indirectly heated cathode

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