GB1044170A - Electron tube - Google Patents

Electron tube

Info

Publication number
GB1044170A
GB1044170A GB50775/63A GB5077563A GB1044170A GB 1044170 A GB1044170 A GB 1044170A GB 50775/63 A GB50775/63 A GB 50775/63A GB 5077563 A GB5077563 A GB 5077563A GB 1044170 A GB1044170 A GB 1044170A
Authority
GB
United Kingdom
Prior art keywords
cathode
ring
ceramic
grid
rings
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
GB50775/63A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1044170A publication Critical patent/GB1044170A/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
    • H01J19/40—Screens for shielding
    • 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
    • H01J19/34—Anodes forming part of the envelope
    • 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
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • 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
    • H01J19/78—One or more circuit elements structurally associated with the tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/065—Devices for short wave tubes
    • 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
    • H01J2893/0002—Construction arrangements of electrode systems
    • 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
    • H01J2893/0002—Construction arrangements of electrode systems
    • H01J2893/0003—Anodes forming part of vessel walls

Landscapes

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

Abstract

1,044,170. Thermionic valves. VARIAN ASSOCIATES. Dec. 23, 1963 [Dec. 24, 1962], No. 50775/63. Heading H1D. In an electron tube comprising cylindrical electrodes including cathode 3, control grid 4, screen grid 5 and anode 6, the terminals for the cathode and screen grid comprise projecting metal rings 21, 64, an annular ceramic wafer 63 being sandwiched between the rings to form therewith a by-pass capacitor, the outer diameter of ring 21 being at least as great as that of wafer 63, and the outer diameter of ring 64 being greater to protect wafer 63. As shown, the screen grid 5 comprises a ring of wires extending axially between cap 51 and support rings 59, 60, ring 60 being sealed to, or integral with terminal ring 64. The final tube seal is effected between rings 64, 65 which are of low heat conductivity to prevent conduction of heat to adjacent ceramic-to-metal seals. The control grid wires 4 extend between ceramic cap 45 and support rings 27, 31 which are brazed to four terminal pins 28 sealed in ceramic header 34. The cathode structure includes a ribbed, metal tube 23 which is a press fit within ceramic heater support 7 and a closure 16, which is sealed to cathode cup 13, and to heat dam 19, the latter being sealed to cathode terminal ring 21. The grid caps 45, 51 are secured to the cathode by insulated pin 53, and are such as to minimize undesirable capacitance and increase cathodescreen grid capacitance. The anode 6 is recessed at 75 to reduce stresses caused by differential expansion of the anode and ceramic wall 66.
GB50775/63A 1962-12-24 1963-12-23 Electron tube Expired GB1044170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US246719A US3287597A (en) 1962-12-24 1962-12-24 Vacuum tube with structurally integrated by-pass capacitor

Publications (1)

Publication Number Publication Date
GB1044170A true GB1044170A (en) 1966-09-28

Family

ID=22931913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50775/63A Expired GB1044170A (en) 1962-12-24 1963-12-23 Electron tube

Country Status (4)

Country Link
US (1) US3287597A (en)
CH (1) CH400377A (en)
GB (1) GB1044170A (en)
NL (1) NL302546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9097173B2 (en) 2010-04-07 2015-08-04 Daimler Ag Internal combustion engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255697B1 (en) * 1973-12-21 1977-08-12 Thomson Csf
US4264843A (en) * 1979-09-27 1981-04-28 Rca Corp. Magnetron filament assembly
US4456851A (en) * 1982-03-29 1984-06-26 Rca Corporation Electron tube having a low impedance reduced stress anode structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1873026A (en) * 1928-12-20 1932-08-23 Rca Corp Screen grid tube
US2067607A (en) * 1932-10-12 1937-01-12 William J Hitchcock Thermionic cathode space current tube
US2634384A (en) * 1950-12-01 1953-04-07 Bell Telephone Labor Inc Thermal structure for electron discharge devices
DE1034778B (en) * 1954-02-18 1958-07-24 Siemens Ag Electron tubes for high frequencies with electrode leads of low inductance and low thermal conductivity
NL102367C (en) * 1955-03-08
US2768321A (en) * 1955-05-02 1956-10-23 Rca Corp Indirectly heated electron emitter for power tubes and the like
US3118086A (en) * 1961-07-05 1964-01-14 Westinghouse Electric Corp Electroluminescent device with a built-in resistor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9097173B2 (en) 2010-04-07 2015-08-04 Daimler Ag Internal combustion engine

Also Published As

Publication number Publication date
CH400377A (en) 1965-10-15
US3287597A (en) 1966-11-22
NL302546A (en) 1965-10-25

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