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GB471103A - Improvements in and relating to deflecting means for cathode ray tubes - Google Patents

Improvements in and relating to deflecting means for cathode ray tubes

Info

Publication number
GB471103A
GB471103A GB32945/35A GB3294535A GB471103A GB 471103 A GB471103 A GB 471103A GB 32945/35 A GB32945/35 A GB 32945/35A GB 3294535 A GB3294535 A GB 3294535A GB 471103 A GB471103 A GB 471103A
Authority
GB
United Kingdom
Prior art keywords
deflection
coils
ray tubes
poles
producing deflection
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
GB32945/35A
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.)
MICHAEL BOWMAN MANIFOLD
Original Assignee
MICHAEL BOWMAN MANIFOLD
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 MICHAEL BOWMAN MANIFOLD filed Critical MICHAEL BOWMAN MANIFOLD
Priority to GB32945/35A priority Critical patent/GB471103A/en
Priority to US110046A priority patent/US2108523A/en
Priority to FR813927D priority patent/FR813927A/en
Priority to DEE2370D priority patent/DE933405C/en
Publication of GB471103A publication Critical patent/GB471103A/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
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

471,103. Cathode-ray tubes. MANIFOLD, M. BOWMAN-. Nov. 27, 1935, No. 32945. [Class 39 (i)] Electromagnetic deflecting coils for a cathode-ray tube are arranged to prevent " pin-cushion " distortion when the radius of curvature of the screen is less than the distance from the screen to the centre of the deflection region ; for this purpose the coils are so arranged that lines of force due to those producing deflection in one direction, are curved towards the centre of the region. Fig. 2 shows an arrangement of coils A, A<1>, B, B<1> for producing deflection in one direction, and coils C, C<1>, D, D<1> for producing deflection at right-angles to the first, arranged with a magnetic yoke Y having projecting poles 1, 2, 3, 4 the lines joining opposite poles being at 45‹ to the direction of deflection. The yoke and poles may be omitted, but the coils should still be arranged so that those producing deflection in one direction should be nearer to each other than to those producing deflection in the direction at right-angles thereto. As the deflection increases more rapidly the greater it is, the currents should increase more slowly as they become greater.
GB32945/35A 1935-11-27 1935-11-27 Improvements in and relating to deflecting means for cathode ray tubes Expired GB471103A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB32945/35A GB471103A (en) 1935-11-27 1935-11-27 Improvements in and relating to deflecting means for cathode ray tubes
US110046A US2108523A (en) 1935-11-27 1936-11-10 Cathode ray tube
FR813927D FR813927A (en) 1935-11-27 1936-11-25 Improvements to deflector devices for cathode ray tubes
DEE2370D DE933405C (en) 1935-11-27 1936-11-28 Magnetic deflection device for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32945/35A GB471103A (en) 1935-11-27 1935-11-27 Improvements in and relating to deflecting means for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB471103A true GB471103A (en) 1937-08-27

Family

ID=10346325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32945/35A Expired GB471103A (en) 1935-11-27 1935-11-27 Improvements in and relating to deflecting means for cathode ray tubes

Country Status (4)

Country Link
US (1) US2108523A (en)
DE (1) DE933405C (en)
FR (1) FR813927A (en)
GB (1) GB471103A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972332C (en) * 1938-11-24 1959-07-02 Fernseh Gmbh Electromagnetic deflection device for cathode ray tubes, especially for televisions
DE976695C (en) * 1943-09-08 1964-03-05 Philips Nv Deflection coil arrangement for cathode ray tubes
US2428947A (en) * 1945-01-31 1947-10-14 Rca Corp Deflection device for cathode-ray tubes
US2562395A (en) * 1949-02-23 1951-07-31 Motorola Inc Anastigmatic deflection yoke
US2565331A (en) * 1950-03-22 1951-08-21 Gen Electric Wide angle sweep yoke assembly
US2766407A (en) * 1951-12-27 1956-10-09 Du Mont Allen B Lab Inc Cathode ray tube deflection systems
BE537872A (en) * 1954-05-05
US2831997A (en) * 1955-07-27 1958-04-22 Hazeltine Research Inc Electron-beam deflection yoke
US3139566A (en) * 1955-08-25 1964-06-30 Hazeltine Research Inc Construction of magnetic deflection yokes and the like
US3111609A (en) * 1959-03-16 1963-11-19 Gen Electric Deflection yoke and method of making
US6894418B2 (en) * 2002-07-30 2005-05-17 Comprehensive Power, Inc. Nested stator coils for permanent magnet machines

Also Published As

Publication number Publication date
US2108523A (en) 1938-02-15
DE933405C (en) 1955-09-22
FR813927A (en) 1937-06-11

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