GB1142316A - Thermionic valves - Google Patents

Thermionic valves

Info

Publication number
GB1142316A
GB1142316A GB2202166A GB2202166A GB1142316A GB 1142316 A GB1142316 A GB 1142316A GB 2202166 A GB2202166 A GB 2202166A GB 2202166 A GB2202166 A GB 2202166A GB 1142316 A GB1142316 A GB 1142316A
Authority
GB
United Kingdom
Prior art keywords
grid
support
anode
shield
ring
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
GB2202166A
Inventor
Harding Meredith Jenkins
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2202166A priority Critical patent/GB1142316A/en
Publication of GB1142316A publication Critical patent/GB1142316A/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
    • H01J19/78—One or more circuit elements structurally associated with the tube
    • 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
    • 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
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/186—Getter supports
    • 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
    • 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
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

1,142,316. Thermionic valves. STANDARD TELEPHONES & CABLES Ltd. 18 May, 1966, No. 22021/66. Heading H1D. In a triode valve the grid-anode capacitance is increased by the provision of a vacuum capacitor formed by the coaxial arrangement of a cylindrical portion of a grid support 16, a cylindrical shield 27 surrounding and joined to the grid support 16 and a skirt 28 depending from anode 3 and extending between the shield 27 and the cylindrical portion of grid support 16. In the valve shown, the anode 3 with cooling means 4 forms part of the envelope and surrounds the grid 17 and directly heated coiled cathode 10. The cage-like portion 18 of the grid, which is photo-etched from a sheet to produce the pattern of apertures and formed into a hollow cylinder spot welded at 21, is supported at its lower end 22 by welding to a conical grid member 16 which is attached through grid support ring 15 and metal collar 7 to grid connecting ring 14. Ring 15 also supports cylindrical shield 27 which overlaps with skirt 28 so that the vacuum capacitor extends coaxially with the insulating envelope member 15. Posts 8, 9 attached to pins 2 support cathode and a sapphire extension 24 above top part 12 of centre post 9 supports slotted plate 19 and cap 20 which are part of the grid.' Titanium getter plates 13 are secured to the post 12.
GB2202166A 1966-05-18 1966-05-18 Thermionic valves Expired GB1142316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2202166A GB1142316A (en) 1966-05-18 1966-05-18 Thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2202166A GB1142316A (en) 1966-05-18 1966-05-18 Thermionic valves

Publications (1)

Publication Number Publication Date
GB1142316A true GB1142316A (en) 1969-02-05

Family

ID=10172636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2202166A Expired GB1142316A (en) 1966-05-18 1966-05-18 Thermionic valves

Country Status (1)

Country Link
GB (1) GB1142316A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429490A1 (en) * 1978-06-23 1980-01-18 Thomson Csf PYROLYTIC GRAPHITE GRID FOR HIGH POWER ELECTRONIC TUBE, AND MOUNTING METHOD THEREOF

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429490A1 (en) * 1978-06-23 1980-01-18 Thomson Csf PYROLYTIC GRAPHITE GRID FOR HIGH POWER ELECTRONIC TUBE, AND MOUNTING METHOD THEREOF

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