GB520723A - Improvements relating to cathode ray tubes - Google Patents

Improvements relating to cathode ray tubes

Info

Publication number
GB520723A
GB520723A GB266140A GB266140A GB520723A GB 520723 A GB520723 A GB 520723A GB 266140 A GB266140 A GB 266140A GB 266140 A GB266140 A GB 266140A GB 520723 A GB520723 A GB 520723A
Authority
GB
United Kingdom
Prior art keywords
coils
laminae
line
cathode
axes
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
GB266140A
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.)
WALTER HENRY STEVENS
AC Cossor Ltd
Original Assignee
WALTER HENRY STEVENS
AC Cossor 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 WALTER HENRY STEVENS, AC Cossor Ltd filed Critical WALTER HENRY STEVENS
Priority to GB266140A priority Critical patent/GB520723A/en
Publication of GB520723A publication Critical patent/GB520723A/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
    • H01J29/766—Deflecting by magnetic fields only using a combination of saddle coils and toroidal windings

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

520,723. Cathode-ray tubes. COSSOR, Ltd., A. C., BEDFORD, L. H., JOFEH, L., and STEVENS, W. H. May 10, 1938, No. 2661/40. Divided out of 519,668. [Class 39 (i)] In an electro-magnetic deflecting system for a cathode-ray tube used for television or as a beam valve the coils 7 for line deflections surround a former 6 on the tube neck the side limbs of the magnetic circuits being completed by a rectangle 9a and two U- shaped laminae 9b, 9c; the axes of the coils 7 are on the main limb of the magnetic circuit which passes through the tube. The centres of the coils 8 for frame deflection are also on this line but their axes are at right angles thereto ; the external magnetic circuit is continued through laminae 11, wooden spacing blocks 10 separating all the laminae. The laminae 9b,c are of metal known by the Registered Trade Mark " Rhometal" and the others of metal known by the Registered Trade Mark "Stalloy," the former having higher permeability at line frequency than the latter. The coils 8 mav be enclosed in electrostatic screens and' the coils 7 operated symmetrically with respect to earth. The coils 8 may be adjustable to arrange for neutralization of possible pick-up between the coils.
GB266140A 1938-05-10 1938-05-10 Improvements relating to cathode ray tubes Expired GB520723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB266140A GB520723A (en) 1938-05-10 1938-05-10 Improvements relating to cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB266140A GB520723A (en) 1938-05-10 1938-05-10 Improvements relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB520723A true GB520723A (en) 1940-05-01

Family

ID=9743529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB266140A Expired GB520723A (en) 1938-05-10 1938-05-10 Improvements relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB520723A (en)

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