GB477262A - Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes - Google Patents

Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes

Info

Publication number
GB477262A
GB477262A GB17234/37A GB1723437A GB477262A GB 477262 A GB477262 A GB 477262A GB 17234/37 A GB17234/37 A GB 17234/37A GB 1723437 A GB1723437 A GB 1723437A GB 477262 A GB477262 A GB 477262A
Authority
GB
United Kingdom
Prior art keywords
relating
copper
electric discharge
layer
discharge tubes
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
GB17234/37A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB477262A publication Critical patent/GB477262A/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

Landscapes

  • Discharge Lamp (AREA)

Abstract

477,262. Electron multipliers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 21, 1937, No. 17234. Convention date, June 23, 1936. [Class 39 (i)] The secondary-emitting electrode of a multiplier comprises an emitting layer of one or more of the oxides of the alkaline earth metals, or magnesium, or both, the thickness of the layer being not greater than 3 microns, preferably not greater than 1 micron. The layer may be deposited cataphoretically, or by vaporization from the cathode, and may consist of barium oxide. The support may be of nickel or molybdenum, or of copper or a copper alloy in which case the cathode support may also be of copper or a copper alloy.
GB17234/37A 1936-06-23 1937-06-21 Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes Expired GB477262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL477262X 1936-06-23

Publications (1)

Publication Number Publication Date
GB477262A true GB477262A (en) 1937-12-24

Family

ID=19786535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17234/37A Expired GB477262A (en) 1936-06-23 1937-06-21 Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes

Country Status (3)

Country Link
BE (1) BE422210A (en)
FR (1) FR823368A (en)
GB (1) GB477262A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE914418C (en) * 1939-02-19 1954-07-01 Fernseh Gmbh Discharge tubes with a secondary emitting insulating surface
DE874176C (en) * 1939-03-25 1953-04-20 Sueddeutsche Telefon App Secondary electron multiplier with glow cathode

Also Published As

Publication number Publication date
BE422210A (en)
FR823368A (en) 1938-01-19

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