FR772609A - Indirectly heated elongated cathode for thermionic tubes - Google Patents

Indirectly heated elongated cathode for thermionic tubes

Info

Publication number
FR772609A
FR772609A FR772609DA FR772609A FR 772609 A FR772609 A FR 772609A FR 772609D A FR772609D A FR 772609DA FR 772609 A FR772609 A FR 772609A
Authority
FR
France
Prior art keywords
indirectly heated
thermionic tubes
elongated cathode
heated elongated
cathode
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.)
MO Valve Co Ltd
Original Assignee
MO Valve Co 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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Application granted granted Critical
Publication of FR772609A publication Critical patent/FR772609A/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
FR772609D 1933-06-24 1934-04-30 Indirectly heated elongated cathode for thermionic tubes Expired FR772609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18051/33A GB419096A (en) 1933-06-24 1933-06-24 Improvements in thermionic cathodes

Publications (1)

Publication Number Publication Date
FR772609A true FR772609A (en) 1934-11-02

Family

ID=10105780

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772609D Expired FR772609A (en) 1933-06-24 1934-04-30 Indirectly heated elongated cathode for thermionic tubes

Country Status (5)

Country Link
US (1) US2014787A (en)
BE (1) BE403333A (en)
FR (1) FR772609A (en)
GB (1) GB419096A (en)
NL (1) NL38569C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589522A (en) * 1952-03-18 Cathode heater structure
US2589521A (en) * 1952-03-18 Heater
NL63789C (en) * 1946-11-13
US2653268A (en) * 1950-05-01 1953-09-22 Beverly D Kumpfer Directly heated cathode structure
GB734196A (en) * 1952-06-11 1955-07-27 Standard Telephones Cables Ltd Improvements in or relating to indirectly heated cathodes
US2872611A (en) * 1953-11-16 1959-02-03 Sylvania Electric Prod Cathode
US3226806A (en) * 1960-03-18 1966-01-04 Eitel Mccullough Inc Method of making a cathode heater assembly
NL268393A (en) * 1960-08-19
EP1983546A1 (en) * 2007-04-20 2008-10-22 PANalytical B.V. X-ray cathode and tube

Also Published As

Publication number Publication date
GB419096A (en) 1934-11-06
NL38569C (en)
BE403333A (en)
US2014787A (en) 1935-09-17

Similar Documents

Publication Publication Date Title
FR774334A (en) High deflection braun tubes
FR772609A (en) Indirectly heated elongated cathode for thermionic tubes
FR775737A (en) Indirectly heated cathode for electric discharge tubes
FR718982A (en) Indirectly heated incandescent cathode for discharge tubes
FR811528A (en) heating element for high voltage cathodes
FR45478E (en) Electron tube
FR774747A (en) Electronic lamps with indirect heating cathode
FR731971A (en) Indirectly heated cathode
FR786029A (en) Indirectly heated cathode for discharge tubes
FR810663A (en) Indirectly heated cathode for braun tubes
FR48186E (en) Indirectly heated cathode for discharge tubes
FR777506A (en) Indirectly heated cathode for electric discharge tubes
FR943721A (en) Indirectly heated cathodes for electron tubes
FR715895A (en) Indirectly heated cathode
FR769550A (en) Indirectly heated cathode
FR750565A (en) Improvements to indirectly heated cathodes
FR774589A (en) Indirectly heated cathode for electric discharge tubes
FR759316A (en) Indirectly heated cathode
FR791661A (en) Indirectly heated cathode for electric discharge lamps or tubes
FR797630A (en) Improvements to indirectly heated cathodes for cathode ray tubes
FR793558A (en) Indirectly heated cathode for electric discharge tubes
FR772352A (en) New heating process using storage stoves
FR772970A (en) Tube heating oven
FR736541A (en) Indirect heating cathode for vessels or discharge tubes
FR718620A (en) Heated cathode for discharge tubes