GB1011918A - Improvements in or relating to scanning coil assembly - Google Patents

Improvements in or relating to scanning coil assembly

Info

Publication number
GB1011918A
GB1011918A GB4149860A GB4149860A GB1011918A GB 1011918 A GB1011918 A GB 1011918A GB 4149860 A GB4149860 A GB 4149860A GB 4149860 A GB4149860 A GB 4149860A GB 1011918 A GB1011918 A GB 1011918A
Authority
GB
United Kingdom
Prior art keywords
clips
assembly includes
field
magnet arrangement
coil assembly
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
GB4149860A
Inventor
Peter Harold Phillips
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB4149860A priority Critical patent/GB1011918A/en
Publication of GB1011918A publication Critical patent/GB1011918A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1,011,918. Electron beam deflecting apparatus. PLESSEY CO. Ltd. March 2, 1962 [Dec. 2, 1960], No. 41498/60. Heading H1D. A cathode-ray tube scanning coil assembly includes, at its forward end, a fixed auxiliary magnet arrangement comprising a complete, or split ring of magnetic material which produces a magnetic field generally transverse to the direction of line scan and extending over the effective scanning area. This field reduces pin cushion distortion in the vertical direction and tends to prevent barrel distortion at the top and bottom of the picture. As shown, the assembly includes a plastic element 3, interposed between the line and frame scanning coils, and formed with an axial flange 5 supporting the auxiliary magnet arrangement. Diametrically opposed cylindrical magnets 14 are fixed between arcuate pole-pieces 8, 9 by clips 15 to produce a substantially linear auxiliary field. The clips 15 may also support a plate for shorting out localized magnetic fields. A similar magnetic field may also be provided by a thermoplastic or rubber ring impregnated with magnetic material either alone or associated with two short magnets. Alternatively, two semi-circular magnetized strips can be used.
GB4149860A 1960-12-02 1960-12-02 Improvements in or relating to scanning coil assembly Expired GB1011918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4149860A GB1011918A (en) 1960-12-02 1960-12-02 Improvements in or relating to scanning coil assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4149860A GB1011918A (en) 1960-12-02 1960-12-02 Improvements in or relating to scanning coil assembly

Publications (1)

Publication Number Publication Date
GB1011918A true GB1011918A (en) 1965-12-01

Family

ID=31503878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4149860A Expired GB1011918A (en) 1960-12-02 1960-12-02 Improvements in or relating to scanning coil assembly

Country Status (1)

Country Link
GB (1) GB1011918A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618125A (en) * 1969-04-23 1971-11-02 Denki Onkyo Co Ltd Deflection yoke
US3621416A (en) * 1969-04-24 1971-11-16 Denki Onkyo Co Ltd Deflection yoke

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618125A (en) * 1969-04-23 1971-11-02 Denki Onkyo Co Ltd Deflection yoke
US3621416A (en) * 1969-04-24 1971-11-16 Denki Onkyo Co Ltd Deflection yoke

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