FR869470A - Secondary emission cathode - Google Patents

Secondary emission cathode

Info

Publication number
FR869470A
FR869470A FR869470DA FR869470A FR 869470 A FR869470 A FR 869470A FR 869470D A FR869470D A FR 869470DA FR 869470 A FR869470 A FR 869470A
Authority
FR
France
Prior art keywords
emission cathode
secondary emission
cathode
emission
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Application granted granted Critical
Publication of FR869470A publication Critical patent/FR869470A/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
    • H01J1/32—Secondary-electron-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR869470D 1940-02-16 1941-01-23 Secondary emission cathode Expired FR869470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE869470X 1940-02-16

Publications (1)

Publication Number Publication Date
FR869470A true FR869470A (en) 1942-02-03

Family

ID=6802940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869470D Expired FR869470A (en) 1940-02-16 1941-01-23 Secondary emission cathode

Country Status (2)

Country Link
BE (1) BE440557A (en)
FR (1) FR869470A (en)

Also Published As

Publication number Publication date
BE440557A (en)

Similar Documents

Publication Publication Date Title
FR1052908A (en) Continuous emission radar
CH222367A (en) Large area cathode.
CH269632A (en) Secondary emission electron tube for very high frequencies.
FR881865A (en) Cathode ray tubes
FR869470A (en) Secondary emission cathode
FR859226A (en) Cathode luminescence tube
FR845087A (en) High secondary electron emission cathodes
CH220852A (en) Thorium cathode.
FR868423A (en) Rhenium thoriated cathodes
FR48401E (en) Secondary emission tube oscillator
CH218678A (en) Cathode ray tube.
FR885616A (en) Cathode beam explorer
CH214273A (en) Electrostatic secondary electron multiplier.
FR874688A (en) Cathode
FR850203A (en) Secondary emission amplifier
FR851188A (en) Secondary emission amplifier
FR881800A (en) Secondary emission image enhancer
FR1091018A (en) secondary emission electrode
FR873959A (en) Cathode ray tube
FR872458A (en) Secondary electron multiplier
FR884112A (en) Secondary electron multiplier
FR812679A (en) Secondary electronic emission amplifier
FR868312A (en) Cathode ray tube impedancemeter
FR884863A (en) Highly emitting surface cathode
FR875309A (en) Counter-strike hammer