GB871297A - Deflection yoke core for cathode ray tubes - Google Patents

Deflection yoke core for cathode ray tubes

Info

Publication number
GB871297A
GB871297A GB19042/58A GB1904258A GB871297A GB 871297 A GB871297 A GB 871297A GB 19042/58 A GB19042/58 A GB 19042/58A GB 1904258 A GB1904258 A GB 1904258A GB 871297 A GB871297 A GB 871297A
Authority
GB
United Kingdom
Prior art keywords
core
parts
cathode ray
distortion
ray tubes
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
GB19042/58A
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.)
Steatite Research Corp
Original Assignee
Steatite Research Corp
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 Steatite Research Corp filed Critical Steatite Research Corp
Publication of GB871297A publication Critical patent/GB871297A/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

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

871,297. Electron beam deflecting apparatus. STEATITE RESEARCH CORPORATION. June 13, 1958 [June 19, 1957], No. 19042/58. Class 39(1). Pincushion distortion is compensated by barrel distortion introduced by making the sides of the magnetic yoke core surrounding the deflecting coils flat by slicing a hollow cylinder and by making each flattened part form with the internal flared portion a concavely shaped edge to introduce barrel distortion which compensates for the pincushion distortion present the core is made in several, e.g. four, parts and surrounds the 2 horizontal and 2 vertical scanning coils 31, Fig. 4. The ferromagnetic yoke is made of four moulded interfitting parts. The flared end of the core at 26 also matches the flared part of the tube bulb. A clamp 35 holds the four parts of the core together. The core is designed specifically for wide angle deflection cathode ray tubes, i.e, with a deflection angle of 90-110 degrees. Projecting portions 23, 24 are provided on each segment of the core. It is stated that the curved edge 29, Fig. 2, may produce the compensating barrel distortion. The core segments are of powdered iron, ferrous alloys or ferrites.
GB19042/58A 1957-06-19 1958-06-13 Deflection yoke core for cathode ray tubes Expired GB871297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US666717A US2955220A (en) 1957-06-19 1957-06-19 Deflection yoke core for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB871297A true GB871297A (en) 1961-06-28

Family

ID=24675160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19042/58A Expired GB871297A (en) 1957-06-19 1958-06-13 Deflection yoke core for cathode ray tubes

Country Status (4)

Country Link
US (1) US2955220A (en)
DE (1) DE1080232B (en)
FR (1) FR1197341A (en)
GB (1) GB871297A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050664A (en) * 1957-10-17 1962-08-21 Gen Electric Magnetic deflection yoke
US3535428A (en) * 1968-07-17 1970-10-20 Air Reduction Apparatus for producing and directing an electron beam

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240606A (en) * 1939-10-21 1941-05-06 Philco Radio & Television Corp Electron beam deflecting yoke
BE507000A (en) * 1950-06-25
US2793311A (en) * 1951-04-18 1957-05-21 Du Mont Allen B Lab Inc Deflection yoke
US2817782A (en) * 1954-07-09 1957-12-24 Rca Corp Cathode ray tube deflection apparatus

Also Published As

Publication number Publication date
DE1080232B (en) 1960-04-21
FR1197341A (en) 1959-11-30
US2955220A (en) 1960-10-04

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