GB445499A - Improvements in or relating to electron discharge tubes - Google Patents

Improvements in or relating to electron discharge tubes

Info

Publication number
GB445499A
GB445499A GB34994/34A GB3499434A GB445499A GB 445499 A GB445499 A GB 445499A GB 34994/34 A GB34994/34 A GB 34994/34A GB 3499434 A GB3499434 A GB 3499434A GB 445499 A GB445499 A GB 445499A
Authority
GB
United Kingdom
Prior art keywords
cathode
rods
electrodes
points
positive potential
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
GB34994/34A
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 GB445499A publication Critical patent/GB445499A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

445,499. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec. 5, 1934, No. 34994. Convention date, March 23. Drawings to Specification. [Class 39 (i)] A valve comprises an indirectly-heated cathode, one or more grids and one or more anodes so arranged that all points of the cathode at the same level are not equidistant from the other electrodes, and one or more rods, which are not electrode supports, are provided at points where the distance between the cathode and the other electrodes is greatest, these rods being maintained at such a positive potential that the tube cannot function as a double diode triode. In one form two rods, connected to a positive potential are arranged on the major axes of an oval cylindrical grid and anode and at the opposite sides of a circular cylindrical cathode. The arrangement is stated to increase the steepness of the characteristic by reducing space charge. Specifications 414,506 and 419,888 are referred to.
GB34994/34A 1934-03-23 1934-12-05 Improvements in or relating to electron discharge tubes Expired GB445499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE445499X 1934-03-23

Publications (1)

Publication Number Publication Date
GB445499A true GB445499A (en) 1936-04-14

Family

ID=6537768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34994/34A Expired GB445499A (en) 1934-03-23 1934-12-05 Improvements in or relating to electron discharge tubes

Country Status (1)

Country Link
GB (1) GB445499A (en)

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