GB669716A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB669716A
GB669716A GB4553/50A GB455350A GB669716A GB 669716 A GB669716 A GB 669716A GB 4553/50 A GB4553/50 A GB 4553/50A GB 455350 A GB455350 A GB 455350A GB 669716 A GB669716 A GB 669716A
Authority
GB
United Kingdom
Prior art keywords
foil
cathode
feb
parts
soldered
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
GB4553/50A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB669716A publication Critical patent/GB669716A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode

Landscapes

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

Abstract

669,716. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 22, 1950 [Feb. 25, 1949], No. 4553/50. Class 39 (i). A thermionic valve comprises a flat coated nickel cathode 9, supported on a cylindrical molybdenum foil 13, close to a grid 5 secured to a copper disc 4 sealed through the parts 1, 2 of the glass envelope. The foil 13 is surrounded by a molybdenum cylinder 16, mounted on three stay-rods 17 and extending from the - cathode surface round the parts of the cathode and foil which are at a high temperature, so as to arrest volatalizing products and act as a radiation shield. The foil 13 is soldered to the inner of two telescopic chromium-iron-nickel cylinders 14, 15, which are soldered together at the ends after the correct cathode-grid spacing has been adjusted by sliding. A further disc 6 supports the anode 7 and a getter container 8.
GB4553/50A 1949-02-25 1950-02-22 Improvements in or relating to electric discharge tubes Expired GB669716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL669716X 1949-02-25

Publications (1)

Publication Number Publication Date
GB669716A true GB669716A (en) 1952-04-09

Family

ID=19798876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4553/50A Expired GB669716A (en) 1949-02-25 1950-02-22 Improvements in or relating to electric discharge tubes

Country Status (1)

Country Link
GB (1) GB669716A (en)

Similar Documents

Publication Publication Date Title
GB346957A (en) Improvements in and relating to electron discharge devices
GB669716A (en) Improvements in or relating to electric discharge tubes
GB562178A (en) Improvements in and relating to electric discharge devices
GB516111A (en) Improvements in electron discharge tubes
GB710990A (en) Improvements in or relating to electric discharge tubes for short-wave working
GB661750A (en) Improvements relating to thermionic valves
GB650560A (en) Grid-controlled gaseous electron discharge device
GB744769A (en) Electron power tube
GB681649A (en) Improvements in or relating to electric discharge tubes
GB491685A (en) Improvements in or relating to electron discharge devices
GB528458A (en) Improvements in or relating to electron discharge tubes
GB558336A (en) Improvements relating to electric devices having an enclosing envelope
GB936955A (en) Improvements in electric discharge tubes
GB709103A (en) Improvements in or relating to gas-filled electric discharge tubes
GB663854A (en) Electric discharge tube
GB585452A (en) Improvements in or relating to electron discharge devices
GB581323A (en) Improvements in or relating to amplifier valves for high frequencies of the grounded grid triode type
GB653153A (en) Improvements in or relating to electron discharge devices
GB728067A (en) Improvements relating to thermionic cathode discharge tubes
GB625283A (en) Improvements in rectifying electric discharge tubes
GB619767A (en) Improvements in electronic discharge devices
GB652996A (en) Mounts for electron discharge devices
GB541645A (en) Improvements in electrode mounting arrangements for electron discharge devices
GB514455A (en) Improvements in or relating to electron discharge devices
GB701378A (en) Improvements in or relating to electrical discharge tubes