CH340280A - Electric discharge tube with a directly heatable cathode - Google Patents

Electric discharge tube with a directly heatable cathode

Info

Publication number
CH340280A
CH340280A CH340280DA CH340280A CH 340280 A CH340280 A CH 340280A CH 340280D A CH340280D A CH 340280DA CH 340280 A CH340280 A CH 340280A
Authority
CH
Switzerland
Prior art keywords
discharge tube
electric discharge
directly heatable
heatable cathode
cathode
Prior art date
Application number
Other languages
German (de)
Inventor
Gerardus Dorgelo Eduard
Original Assignee
Philips Nv
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 Nv filed Critical Philips Nv
Publication of CH340280A publication Critical patent/CH340280A/en

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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
CH340280D 1955-04-02 1956-03-29 Electric discharge tube with a directly heatable cathode CH340280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL340280X 1955-04-02

Publications (1)

Publication Number Publication Date
CH340280A true CH340280A (en) 1959-08-15

Family

ID=19784673

Family Applications (1)

Application Number Title Priority Date Filing Date
CH340280D CH340280A (en) 1955-04-02 1956-03-29 Electric discharge tube with a directly heatable cathode

Country Status (6)

Country Link
US (1) US2882436A (en)
CH (1) CH340280A (en)
DE (1) DE1009313B (en)
FR (1) FR1144978A (en)
GB (1) GB797964A (en)
NL (1) NL88786C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152276A (en) * 1960-09-08 1964-10-06 Philips Corp Electron tube having coaxial terminals for an interiorly emissive cathode
DE1146985B (en) * 1960-11-04 1963-04-11 Siemens Ag Semi-indirectly heated cathode for electron tubes
FR1312580A (en) * 1961-11-09 1962-12-21 Csf Improvements to millimeter-sized cathodes for electron tubes
US3299317A (en) * 1963-06-12 1967-01-17 Varian Associates Electron tube having a quick heating cathode with means to apply a variable voltage to the quick heating cathode
FR1455956A (en) * 1965-07-20 1966-05-20 Thomson Houston Comp Francaise Direct heating cathode improvements
US3482300A (en) * 1966-10-31 1969-12-09 Screen Printing Systems Inc Printing screen and method of making same
US3465400A (en) * 1967-02-01 1969-09-09 Varian Associates Method of making cylindrical mesh electrode for electron tubes
NL7201534A (en) * 1972-02-05 1973-08-07
US3976909A (en) * 1975-07-11 1976-08-24 Rca Corporation Wire mesh cathode
SU1042105A1 (en) * 1980-02-05 1983-09-15 Организация П/Я Х-5263 Grid-type filamentary cathode for vacuum tubes and its manufacture method
FR2532468A1 (en) * 1982-08-31 1984-03-02 Thomson Csf IMPROVEMENT TO CATHODES WITH DIRECT HEATING
US4781640A (en) * 1985-01-24 1988-11-01 Varian Associates, Inc. Basket electrode shaping

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1596672A (en) * 1924-02-05 1926-08-17 Luckash Andrew Audion tube
US1874355A (en) * 1924-03-10 1932-08-30 Rca Corp Thermionic valve
US2210761A (en) * 1936-10-07 1940-08-06 Gen Electric Cathode
US2363028A (en) * 1941-12-16 1944-11-21 Carl J Warnke Cathode filament
US2724069A (en) * 1950-03-30 1955-11-15 English Electric Valve Co Ltd Thermionic valves
NL86395C (en) * 1950-05-17
DE899081C (en) * 1950-05-17 1953-12-07 Siemens Ag Cathode for electron tubes

Also Published As

Publication number Publication date
NL88786C (en)
US2882436A (en) 1959-04-14
GB797964A (en) 1958-07-09
FR1144978A (en) 1957-10-21
DE1009313B (en) 1957-05-29

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