GB615446A - Improvements in or relating to electric discharge tube arrangements for operation atvery high frequencies - Google Patents

Improvements in or relating to electric discharge tube arrangements for operation atvery high frequencies

Info

Publication number
GB615446A
GB615446A GB33015/45A GB3301545A GB615446A GB 615446 A GB615446 A GB 615446A GB 33015/45 A GB33015/45 A GB 33015/45A GB 3301545 A GB3301545 A GB 3301545A GB 615446 A GB615446 A GB 615446A
Authority
GB
United Kingdom
Prior art keywords
envelope
sealed
closure
electrodes
anodes
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
GB33015/45A
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 GB615446A publication Critical patent/GB615446A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/78One or more circuit elements structurally associated with the tube
    • H01J19/80Structurally associated resonator having distributed inductance and capacitance

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

615,446. Thermionic valves. PHILIPS LAMPS, Ltd. Dec. 6, 1945, No. 33015. Convention date, Nov. 14, 1940. [Class 39 (i)] The electrodes of a valve, particularly for ultra - high - frequencies, or their supports are sealed into the envelope by a glass seal of cellular structure consisting of at least 5 per cent of fine bubbles and having a specific gravity at least 5 per cent lower than that of the glass in a homogeneous condition, and are continued outside the envelope to form the elements of an oscillatory circuits. In the triode arrangement shown, the support wires of the grid 3 and the cylindrical anode 4 are sealed preferably without change of section through the cellular glass closure 5. Preferably, the indirectly-heated cathode 2 is sealed without change of section through the closure at the same time as the other electrodes and simultaneously with the closure of the envelope 1. The external oscillating circuit is formed by the extensions of the anode and grid supports, and the latter may be wound with a wire or may carry a metal tube 7 to equalize the internal and external capacity of the circuit. Tuning is effected by a slider 9. In modifications, the arrangement of the electrodes may be reversed, and may comprise one or more anodes surrounded by one or more cathodes. An arrangement for push-pull operation is referred to in which two grids and two anodes are disposed on either side of a common cathode. The cellular glass closure is used at both ends of the envelope, and the grids are sealed through one and the anodes through the other. Specifications 603,489, 604,245 and 615,477, [all in Group XXXVI], are referred to. The subjectmatter is identical with that of Specification 552,700.
GB33015/45A 1940-11-14 1945-12-06 Improvements in or relating to electric discharge tube arrangements for operation atvery high frequencies Expired GB615446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL615446X 1940-11-14

Publications (1)

Publication Number Publication Date
GB615446A true GB615446A (en) 1949-01-06

Family

ID=19788243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33015/45A Expired GB615446A (en) 1940-11-14 1945-12-06 Improvements in or relating to electric discharge tube arrangements for operation atvery high frequencies

Country Status (1)

Country Link
GB (1) GB615446A (en)

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