GB887500A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB887500A
GB887500A GB3290458A GB3290458A GB887500A GB 887500 A GB887500 A GB 887500A GB 3290458 A GB3290458 A GB 3290458A GB 3290458 A GB3290458 A GB 3290458A GB 887500 A GB887500 A GB 887500A
Authority
GB
United Kingdom
Prior art keywords
insulator
cathode
resilient means
sleeve
spring
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
GB3290458A
Inventor
Frederick Gustav Adolf Haegele
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 GB3290458A priority Critical patent/GB887500A/en
Publication of GB887500A publication Critical patent/GB887500A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/24—Insulating layer or body located between heater and emissive material

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

887,500. Thermionic cathode constructions. STANDARD TELEPHONES & CABLES Ltd. Oct. 15 1958, No. 32904/58. Class 39(1) In an indirectly-heated cathode having a heater 2 within a cathode sleeve 1 mounted on insulating washers 4, 5, and separated from said sleeve by a tubular insulator 3, the insulator projects beyond the cathode sleeve at both ends, and is retained in position by resilient means mounted independently of the cathode sleeve. In Fig. 3 this resilient means is a U-shaped spring 11 eyeletted to an extra support 12, the spring bearing directly on the upper end of insulator 3. The lead-in wires (i.e. 15) for the heater may have protuberances and/or short insulating collars against which the lower end of the insulator abuts. In the modification of Fig. 7 (not shown), the upper end of the insulator abuts against a rigid support, the resilient means bearing against the lower end, The spring 11 may be connected to a low-voltage electrode, to prevent its acquiring a static charge.
GB3290458A 1958-10-15 1958-10-15 Improvements in or relating to thermionic valves Expired GB887500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3290458A GB887500A (en) 1958-10-15 1958-10-15 Improvements in or relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3290458A GB887500A (en) 1958-10-15 1958-10-15 Improvements in or relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB887500A true GB887500A (en) 1962-01-17

Family

ID=10345753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3290458A Expired GB887500A (en) 1958-10-15 1958-10-15 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB887500A (en)

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