GB1195805A - Improvements in or relating to Magnetically Focussed Electron Tube Devices - Google Patents

Improvements in or relating to Magnetically Focussed Electron Tube Devices

Info

Publication number
GB1195805A
GB1195805A GB27337/68A GB2733768A GB1195805A GB 1195805 A GB1195805 A GB 1195805A GB 27337/68 A GB27337/68 A GB 27337/68A GB 2733768 A GB2733768 A GB 2733768A GB 1195805 A GB1195805 A GB 1195805A
Authority
GB
United Kingdom
Prior art keywords
cylinder
focusing system
travelling
relating
polepieces
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
GB27337/68A
Other languages
English (en)
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of GB1195805A publication Critical patent/GB1195805A/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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing

Landscapes

  • Microwave Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
GB27337/68A 1967-06-29 1968-06-07 Improvements in or relating to Magnetically Focussed Electron Tube Devices Expired GB1195805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4172467 1967-06-29

Publications (1)

Publication Number Publication Date
GB1195805A true GB1195805A (en) 1970-06-24

Family

ID=12616352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27337/68A Expired GB1195805A (en) 1967-06-29 1968-06-07 Improvements in or relating to Magnetically Focussed Electron Tube Devices

Country Status (3)

Country Link
US (1) US3529197A (de)
DE (1) DE1766638B1 (de)
GB (1) GB1195805A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137482A (en) * 1977-05-12 1979-01-30 Varian Associates, Inc. Periodic permanent magnet focused TWT
DE3610099A1 (de) * 1985-03-25 1986-11-06 Raytheon Co., Lexington, Mass. Kreuzfeld-verstaerkerroehre
US4742271A (en) * 1985-03-25 1988-05-03 Raytheon Company Radial-gain/axial-gain crossed-field amplifier (radaxtron)
GB2277635A (en) * 1993-04-28 1994-11-02 Eev Ltd Magnet arrangements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420842A1 (fr) * 1978-03-24 1979-10-19 Thomson Csf Ligne a retard, pour tube hyperfrequences, refroidie par circulation de fluide et tube hyperfrequences comportant une telle ligne
GB2023331A (en) * 1978-06-08 1979-12-28 English Electric Valve Co Ltd Travelling wave tube arrangements

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB785110A (en) * 1955-06-28 1957-10-23 Standard Telephones Cables Ltd Electron tube magnetic focusing device
US3081527A (en) * 1959-01-14 1963-03-19 Nippon Electric Co Manufacturing method of magnetic focusing equipment
US2964670A (en) * 1959-12-01 1960-12-13 Rca Corp Traveling wave tube
US3178602A (en) * 1960-12-30 1965-04-13 Gen Precision Inc Adjustable permanent magnet focusing array
US3215906A (en) * 1963-09-24 1965-11-02 D M Steward Mfg Company Periodic permanent magnet focusing stack
FR1427456A (fr) * 1964-03-18 1966-02-04 English Electric Valve Co Ltd Ensembles d'aimants fournissant des champs pour dispositifs électroniques

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137482A (en) * 1977-05-12 1979-01-30 Varian Associates, Inc. Periodic permanent magnet focused TWT
DE3610099A1 (de) * 1985-03-25 1986-11-06 Raytheon Co., Lexington, Mass. Kreuzfeld-verstaerkerroehre
US4742271A (en) * 1985-03-25 1988-05-03 Raytheon Company Radial-gain/axial-gain crossed-field amplifier (radaxtron)
GB2277635A (en) * 1993-04-28 1994-11-02 Eev Ltd Magnet arrangements

Also Published As

Publication number Publication date
DE1766638B1 (de) 1971-06-09
US3529197A (en) 1970-09-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee