[go: up one dir, main page]

GB617248A - Electron discharge devices of the magnetron type - Google Patents

Electron discharge devices of the magnetron type

Info

Publication number
GB617248A
GB617248A GB29066/45A GB2906645A GB617248A GB 617248 A GB617248 A GB 617248A GB 29066/45 A GB29066/45 A GB 29066/45A GB 2906645 A GB2906645 A GB 2906645A GB 617248 A GB617248 A GB 617248A
Authority
GB
United Kingdom
Prior art keywords
cathode
chamber
cold
grid
discharge devices
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
GB29066/45A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB617248A publication Critical patent/GB617248A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
    • H01J25/58—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode having a number of resonators; having a composite resonator, e.g. a helix
    • H01J25/587—Multi-cavity magnetrons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/062—Rubbing transfer of solid coating to rotating element

Landscapes

  • Lasers (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

617,248. Magnetrons. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 1, 1945, No. 29066. Convention date, May 29, 1944. [Class 39 (i)] A magnetron comprises an anode block 10, Fig. 1, having a plurality of cavity resonators 11 therein which open into a central chamber, a cold secondary emissive cathode 13 extending through the chamber, a primary thermionic cathode 16 outside the chamber, and a grid 19 for controlling the primary electron flow. The cold cathode 13 is of silver-magnesium alloy and is coated with secondary emissive material ; it is air or water-cooled, being formed as a hollow tube sealed at either end through glass or ceramic cups 22, 23. The thermionic cathode is annular and the grid 16 is in the form of a spiral, Fig. 2 (not shown) ; a disc 15 is mounted on the cold cathode 13. Specifications 588,186, 590,549, and 613,809 are referred to.
GB29066/45A 1944-05-29 1945-11-01 Electron discharge devices of the magnetron type Expired GB617248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US537866A US2493423A (en) 1944-05-29 1944-05-29 Electron discharge device of the magnetron type

Publications (1)

Publication Number Publication Date
GB617248A true GB617248A (en) 1949-02-03

Family

ID=24144431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29066/45A Expired GB617248A (en) 1944-05-29 1945-11-01 Electron discharge devices of the magnetron type

Country Status (2)

Country Link
US (1) US2493423A (en)
GB (1) GB617248A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538597A (en) * 1946-06-18 1951-01-16 Westinghouse Electric Corp Magnetron
CH294489A (en) * 1950-03-20 1953-11-15 Csf Ultra-shortwave electron tube.
US2633556A (en) * 1951-08-02 1953-03-31 Beverly D Kumpfer Millimeter wave generator
US3020445A (en) * 1958-11-24 1962-02-06 Gen Electric Cross-field electric discharge devices
CN117231452B (en) * 2023-11-09 2024-02-13 国科大杭州高等研究院 Hall thruster with middle-arranged electron source and operation method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL14962C (en) * 1923-10-17
US1970532A (en) * 1929-07-27 1934-08-14 Philips Nv Electric discharge tube
US2009369A (en) * 1931-06-24 1935-07-23 Rca Corp Oscillation generation
US2163157A (en) * 1937-07-22 1939-06-20 Bell Telephone Labor Inc Electron discharge apparatus
US2305781A (en) * 1937-10-08 1942-12-22 Helbig Adolf Vacuum electric apparatus
USRE22724E (en) * 1938-04-14 1946-02-19 Radio transmission and reception
US2400770A (en) * 1941-12-24 1946-05-21 Westinghouse Electric Corp Cathode for magnetron devices
US2409038A (en) * 1942-12-31 1946-10-08 Rca Corp Magnetron and circuit therefor
US2450763A (en) * 1943-07-03 1948-10-05 John W Mcnall Ultra high frequency generator vacuum tube and cathode structure therefor

Also Published As

Publication number Publication date
US2493423A (en) 1950-01-03

Similar Documents

Publication Publication Date Title
GB596568A (en) Improvements in or relating to electron discharge devices
GB681425A (en) Improvements in and relating to tubes of the magnetron type for ultra short waves
GB631339A (en) Improvements in magnetrons
GB546774A (en) Half-wave velocity modulation electron discharge tube
GB538623A (en) Improvements in or relating to ultra high frequency electron discharge devices using resonators
GB653833A (en) Improvements in electron discharge devices of the velocity modulation type
GB612513A (en) Magnetron electron discharge devices and associated circuits
GB623766A (en) Improvements in electron discharge devices and particularly magnetrons
US2020727A (en) Gaseous electric discharge device
GB617248A (en) Electron discharge devices of the magnetron type
GB640255A (en) Improvements in magnetron electron-discharge devices
GB675175A (en) Improvements in and relating to high frequency electron discharge devices of the magnetron type
GB649571A (en) Improvements in and relating to electron discharge apparatus
GB653750A (en) Improvements in or relating to magnetrons
US2667593A (en) Electron tube
US2553425A (en) Electron discharge device of the magnetron type
GB604400A (en) Improvements in or relating to electron tube for ultra-short electromagnetic oscillations
GB708216A (en) Improvements in and relating to magnetrons
GB762023A (en) Improvements in or relating to electron tubes of the crossed-fields type
US2605442A (en) Electron discharge device
GB460700A (en) Improvements in or relating to electron valves
GB520623A (en) Improvements in electric discharge tubes for the optical indication of voltages
GB704979A (en) Improvements in or relating to magnetrons
GB635574A (en) Electron discharge devices of the magnetron type
US3450938A (en) Control electrode structure for crossed-field amplifier