GB581451A - Electron discharge devices - Google Patents

Electron discharge devices

Info

Publication number
GB581451A
GB581451A GB10823/44A GB1082344A GB581451A GB 581451 A GB581451 A GB 581451A GB 10823/44 A GB10823/44 A GB 10823/44A GB 1082344 A GB1082344 A GB 1082344A GB 581451 A GB581451 A GB 581451A
Authority
GB
United Kingdom
Prior art keywords
pipe
cathode
sealed
cap
disc
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
GB10823/44A
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
Publication of GB581451A publication Critical patent/GB581451A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J25/54—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 only one cavity or other resonator, e.g. neutrode tubes
    • 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

Landscapes

  • Microwave Tubes (AREA)

Abstract

581,451. Magnetrons; wave guides. STANDARD TELEPHONES & CABLES, Ltd. June 5, 1944, No. 10823. Convention date, March 26, 1943. [Classes 39 (i) and 40 (v)] A magnetron comprises a metal pipe 10, preferably of square bore, sealed at the ends 32, 32<1> and provided with a transverse opening 13 through which extends the cathode 12 ; magnet poles 24, 24<1> are positioned on either side of the opening 13. The ends of the transverse opening are sealed by members each comprising an apertured copper cup 14 applied to a reduced part 11 of the pipe of square external section, a second copper cup 16 nested within the first, supporting the cathode and connected to one of its leads and an annular glass seal 18 joining the two cups. The external cathode leads 22, 22<1> pass through the magnet poles. The cathode comprises a cylinder 12 coated with emissive material such as barium or strontium carbonate and is heated by a spiral element 26. Alternatively the cathode may consist of a helical coil wound on supports and enclosing a heating element ; in this form the cathode is supported by one of the inner cups and the heater by the other, the appropriate connections passing through the corresponding magnet poles. The pipe 10 is connected as anode and is provided with cooling fins 30. The magnetron may be coupled to a pipe 40 by means consisting of a hollow sleeve 34 tlirough an opening in the cap 32<1> through which extends a loop 38, supported by a glass bead 36. Alternatively the coupling may be by means of a slotted metal disc with a mica disc placed over it and sealed beneath the cap. Another form has a second slotted disc aligned with the first, placed over the mica disc, the whole being sealed beneath the cap. In the coupling shown in Fig. 8, the output end, 492 of the pipe 10, is of reduced section and is terminated by a cap 494 having a narrow slot 496 and enclosed by a glass cup 502 sealed to a copper sleeve 500 secured to the pipe. The device 440 to which coupling is made is screwed to a flange 490 on the pipe.
GB10823/44A 1943-03-26 1944-06-05 Electron discharge devices Expired GB581451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481314A US2419536A (en) 1943-03-26 1943-03-26 Magnetron vacuum tube

Publications (1)

Publication Number Publication Date
GB581451A true GB581451A (en) 1946-10-14

Family

ID=23911476

Family Applications (2)

Application Number Title Priority Date Filing Date
GB10304/44A Expired GB592410A (en) 1943-03-26 1944-05-26 Improvements in magnetrons
GB10823/44A Expired GB581451A (en) 1943-03-26 1944-06-05 Electron discharge devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB10304/44A Expired GB592410A (en) 1943-03-26 1944-05-26 Improvements in magnetrons

Country Status (4)

Country Link
US (1) US2419536A (en)
BE (1) BE474796A (en)
FR (1) FR951011A (en)
GB (2) GB592410A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462370A (en) * 1946-10-17 1949-02-22 Aircraft Radio Corp Oscillator tube mounting
US2558664A (en) * 1948-05-15 1951-06-26 Sylvania Electric Prod Switch tube
US2654844A (en) * 1949-04-08 1953-10-06 Eitel Mccullough Inc Ultrahigh-frequency generator and electron tube
US2552047A (en) * 1949-04-19 1951-05-08 Rca Corp Electron discharge device with temperature-stabilized cathode
GB9118593D0 (en) * 1991-08-30 1991-10-16 Eev Ltd Magnetron

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL50309C (en) * 1936-11-07
US2163156A (en) * 1937-07-16 1939-06-20 Bell Telephone Labor Inc Electron discharge device
US2305781A (en) * 1937-10-08 1942-12-22 Helbig Adolf Vacuum electric apparatus
US2282856A (en) * 1940-01-12 1942-05-12 Telefunken Gmbh Magnetron oscillator

Also Published As

Publication number Publication date
FR951011A (en) 1949-10-13
GB592410A (en) 1947-09-17
BE474796A (en)
US2419536A (en) 1947-04-29

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