FR902272A - Improvements to electron tubes comprising an incandescent cathode, at least one grid and one anode - Google Patents

Improvements to electron tubes comprising an incandescent cathode, at least one grid and one anode

Info

Publication number
FR902272A
FR902272A FR902272DA FR902272A FR 902272 A FR902272 A FR 902272A FR 902272D A FR902272D A FR 902272DA FR 902272 A FR902272 A FR 902272A
Authority
FR
France
Prior art keywords
anode
grid
electron tubes
incandescent cathode
incandescent
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR902272A publication Critical patent/FR902272A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00Vacuum tubes
    • H01J21/02Tubes with a single discharge path
FR902272D 1943-04-12 1944-02-29 Improvements to electron tubes comprising an incandescent cathode, at least one grid and one anode Expired FR902272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE902272X 1943-04-12

Publications (1)

Publication Number Publication Date
FR902272A true FR902272A (en) 1945-08-23

Family

ID=6861000

Family Applications (1)

Application Number Title Priority Date Filing Date
FR902272D Expired FR902272A (en) 1943-04-12 1944-02-29 Improvements to electron tubes comprising an incandescent cathode, at least one grid and one anode

Country Status (1)

Country Link
FR (1) FR902272A (en)

Similar Documents

Publication Publication Date Title
FR874922A (en) Improvements made to electric discharge tubes with directed electron beams
CH253108A (en) Beam transformer with at least one vacuum tube in which electrons are accelerated.
FR902272A (en) Improvements to electron tubes comprising an incandescent cathode, at least one grid and one anode
CH260419A (en) Cathode for an electron tube.
CH239640A (en) Electric discharge tube with secondary emission electrode.
FR933439A (en) Wear-free cold cathode electron ray tube
FR942685A (en) Cathode ray tubes
CH256970A (en) Multi-stage electron tube amplifier with direct current coupling.
FR881120A (en) Improvements to electrical devices comprising an incandescent cathode converter tube
FR898353A (en) Improvements to electron tubes comprising an incandescent cathode with indirect heating and an anode
ES177217A1 (en) IMPROVEMENTS IN OR RELATING TO THERMAL VALVES
CH247335A (en) Cathode ray tube.
DK62717C (en) Electron tubes with low anode secondary emission.
DK81864C (en) Cathode ray tube with two or more electron guns.
FR818990A (en) Improvements to electronic lamps comprising a cathode, at least one grid and an anode
FR902587A (en) High Emissivity Incandescent Cathode Improvements for High Vacuum Tubes
CH251013A (en) Self-oscillating, speed-modulated electron tube.
DK67463C (en) Electron beam tubes with cylindrical, telescopically interlocking electrodes.
IE17920L (en) Electron tubes
CH241299A (en) Electric discharge tube with an electron mirror and at least one deflection electrode.
FR903975A (en) Improvements to electron tubes and, in particular, to emitter tubes
IE18501L (en) Electron discharge tubes
GB622679A (en) Improvements in or relating to grid-controlled electric discharge tubes
CH241293A (en) Electron tube.
FR888699A (en) Electron tube with low anode secondary emission