FR1118456A - Improvements to indirectly heated cathodes for thermionic tubes - Google Patents

Improvements to indirectly heated cathodes for thermionic tubes

Info

Publication number
FR1118456A
FR1118456A FR1118456DA FR1118456A FR 1118456 A FR1118456 A FR 1118456A FR 1118456D A FR1118456D A FR 1118456DA FR 1118456 A FR1118456 A FR 1118456A
Authority
FR
France
Prior art keywords
indirectly heated
thermionic tubes
heated cathodes
cathodes
thermionic
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR1118456A publication Critical patent/FR1118456A/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
    • H01J1/24—Insulating layer or body located between heater and emissive material
FR1118456D 1953-12-10 1954-12-08 Improvements to indirectly heated cathodes for thermionic tubes Expired FR1118456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3446853A GB787458A (en) 1953-12-10 1953-12-10 Improvements relating to indirectly heated cathodes for thermionic valves

Publications (1)

Publication Number Publication Date
FR1118456A true FR1118456A (en) 1956-06-06

Family

ID=10366014

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1118456D Expired FR1118456A (en) 1953-12-10 1954-12-08 Improvements to indirectly heated cathodes for thermionic tubes

Country Status (2)

Country Link
FR (1) FR1118456A (en)
GB (1) GB787458A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169793A1 (en) * 1971-11-23 1973-09-14 Standaart Adrian
US4002884A (en) * 1974-01-30 1977-01-11 International Standard Electric Corporation Heater element for an indirectly heated cathode

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE572249A (en) * 1957-10-23
NL275209A (en) * 1961-02-24
US3223876A (en) * 1962-09-06 1965-12-14 Sfd Lab Inc Cathode heater assembly for use in strong d.c. magnetic fields
US3740606A (en) * 1971-09-01 1973-06-19 Gte Sylvania Inc Vibration suppressor in cathode assembly for electron discharge device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169793A1 (en) * 1971-11-23 1973-09-14 Standaart Adrian
US4002884A (en) * 1974-01-30 1977-01-11 International Standard Electric Corporation Heater element for an indirectly heated cathode

Also Published As

Publication number Publication date
GB787458A (en) 1957-12-11

Similar Documents

Publication Publication Date Title
FR1098838A (en) Improvements to cathode ray tubes
CH325999A (en) Hot cathode for electron tubes
FR1118456A (en) Improvements to indirectly heated cathodes for thermionic tubes
FR81588E (en) Further development of indirectly heated oxide cathodes for electron tubes
FR938632A (en) Improvements to magnetron thermionic tubes
FR1179081A (en) Insulated heating wire for indirectly heated cathodes for electric discharge tubes
FR1282691A (en) Further development of indirectly heated oxide cathodes for electron tubes
FR1273216A (en) Improvements to indirectly heated cathodes for electron tubes
FR1087046A (en) Improvements to cathode ray tubes
FR1150153A (en) Thermoemissive cathodes for rhenium-supported electron tubes
FR69716E (en) Indirectly heated cathode for electric discharge tube
FR1053508A (en) Improvements to thermionic cathodes
FR1106548A (en) Improvements to cathode structures for electron tubes
FR1355710A (en) Further development of cathode heating filaments for electron tubes
FR1236862A (en) Indirect heating cathode for electron tubes
FR1093817A (en) Improvements to the cathodes of electron tubes
FR1288492A (en) Further development of indirectly heated cathodes for electron tubes
FR1075330A (en) Improvements to emissive cathodes for electron tubes
CH323748A (en) Anode for X-ray tubes
FR1059489A (en) Cathode improvements for electron tubes
FR1080710A (en) Improvements to oxide cathodes for electron tubes
FR1077643A (en) Improvements to emissive cathodes for electron tubes
CH316950A (en) Grid-controlled electron tube oscillator for RF heating
FR1102648A (en) Improvements to air heaters for electron tube anodes
BE611505A (en) Improvements to indirectly heated oxide cathodes for electron tubes