GB552183A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB552183A
GB552183A GB1534441A GB1534441A GB552183A GB 552183 A GB552183 A GB 552183A GB 1534441 A GB1534441 A GB 1534441A GB 1534441 A GB1534441 A GB 1534441A GB 552183 A GB552183 A GB 552183A
Authority
GB
United Kingdom
Prior art keywords
anode
envelope
cavity
sleeve
anode structure
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
GB1534441A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB1534441A priority Critical patent/GB552183A/en
Publication of GB552183A publication Critical patent/GB552183A/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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/32—Anodes
    • H01J19/36—Cooling of anodes
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0027—Mitigation of temperature effects

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

552,183. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. (International Standard Electric Corporation). Nov. 28, 1941, No. 15344. [Class 39 (i)] The anode structure of thermionic valves comprises an elongated member 1, Fig. 1, having a portion 2 extending inside the envelope and provided with a cup-shaped cavity 2a forming the anode, and an external portion 3 which is adapted for cooling during operation of the valve. The part 3 may have a central flue and radial triangular fins, or a solid core with longitudinal radial fins, or may have means for circulating through a cooling fluid. The member 1 is sealed to the insulating part of the envelope by a sleeve 4 with tapered edge. The cathode and grid are carried by the opposite end of the envelope and are housed in the anode cavity. The grid consists of support wires 8 and wires wound in the usual way, and terminates in a part 9 of cup shape ; it is carried by a ring 7 threaded into a metal sleeve 6 with tapered edges sealed to the insulating portions 5, 11 of the envelope. The cathode consists of two helical filaments 15, 16 of thoriated tungsten wound in opposite directions. In an alternative arrangement, the internal and external parts of the anode structure may be made separate and secured together by a gas tight joint. In a further modification, the anode structure 53, Fig. 6, is secured in a sleeve 52 closed at its outer end. The anode part of the structure may be made of molybdenum or tantalum or of copper lined with molybdenum or tantalum. The anode cavity may have two parts 54, 55 of different internal diameter, and the diameter and thickness of the cavity walls may vary so as to give the required temperature gradient in the anode structure.
GB1534441A 1941-11-28 1941-11-28 Improvements in or relating to electron discharge devices Expired GB552183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1534441A GB552183A (en) 1941-11-28 1941-11-28 Improvements in or relating to electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1534441A GB552183A (en) 1941-11-28 1941-11-28 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB552183A true GB552183A (en) 1943-03-25

Family

ID=10057455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1534441A Expired GB552183A (en) 1941-11-28 1941-11-28 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB552183A (en)

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