GB622679A - Improvements in or relating to grid-controlled electric discharge tubes - Google Patents

Improvements in or relating to grid-controlled electric discharge tubes

Info

Publication number
GB622679A
GB622679A GB31239/46A GB3123946A GB622679A GB 622679 A GB622679 A GB 622679A GB 31239/46 A GB31239/46 A GB 31239/46A GB 3123946 A GB3123946 A GB 3123946A GB 622679 A GB622679 A GB 622679A
Authority
GB
United Kingdom
Prior art keywords
grid
electric discharge
relating
discharge tubes
controlled electric
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
GB31239/46A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB622679A publication Critical patent/GB622679A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/001—Non-constructive schematic arrangements

Abstract

622,679. Thermionic valves. PHILIPS LAMPS, Ltd. Oct. 21, 1946, No. 31239. Convention date, Feb. 16, 1943. [Class 39 (i)] In an electric discharge tube having at least two control grids 5, 6, and a screen grid 7 on the cathode side of one of these grids, the screen grid is built up from a plurality of plate-shaped parts of which the broad faces are parallel to the electron paths. With such a construction electrons passing from the first grid 5 are substantially unimpeded by the grid 7, whereas any electrons repelled by grid 6 acquire a transverse velocity and are thus collected by 7. The grid 7 may consist of a plurality of strip-shaped parts, as shown in the Figure, or of a plurality of flat rings perpendicular to the cathode. It may also be formed as a honeycomb structure. Such a grid is stated to be particularly suitable for use in frequency-changing valves.
GB31239/46A 1943-02-16 1946-10-21 Improvements in or relating to grid-controlled electric discharge tubes Expired GB622679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL622679X 1943-02-16

Publications (1)

Publication Number Publication Date
GB622679A true GB622679A (en) 1949-05-05

Family

ID=19788472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31239/46A Expired GB622679A (en) 1943-02-16 1946-10-21 Improvements in or relating to grid-controlled electric discharge tubes

Country Status (1)

Country Link
GB (1) GB622679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2163381A2 (en) 2008-09-12 2010-03-17 API Foils Limited Holographic film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2163381A2 (en) 2008-09-12 2010-03-17 API Foils Limited Holographic film

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