GB422060A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB422060A
GB422060A GB18999/33A GB1899933A GB422060A GB 422060 A GB422060 A GB 422060A GB 18999/33 A GB18999/33 A GB 18999/33A GB 1899933 A GB1899933 A GB 1899933A GB 422060 A GB422060 A GB 422060A
Authority
GB
United Kingdom
Prior art keywords
cathode
magnetic field
deflecting
modulating
energized
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
GB18999/33A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB422060A publication Critical patent/GB422060A/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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Abstract

422,060. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 4, 1933, No. 18999. Convention date, July 4, 1932. [Class 39 (i)] In a cathode-ray tube having a cathode C, an anode A, a modulating electrode system 1, 2, for shifting the beam relatively to an apertured electrode 3, and an electrode system 4. 5, energized in opposition to the modulating system for correcting undesired deflections, a constant magnetic field is employed for fine adjustment of the correction, so that in the absence of deflecting potentials applied to the scanning electrodes 6..9, movement of the beam due to the modulating potentials is prevented. An annular coil 10, energized by direct current to produce the magnetic field, is mounted around the tube and may be adjustable. It is mounted at a distance from the deflecting control electrodes not less than one-half the internal diameter of the coil so as to prevent interference by the magnetic field with the control exercised by the deflecting system; or a magnetic screen may be interposed.
GB18999/33A 1932-07-04 1933-07-04 Improvements in or relating to cathode ray tubes Expired GB422060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE422060X 1932-07-04

Publications (1)

Publication Number Publication Date
GB422060A true GB422060A (en) 1935-01-04

Family

ID=6461671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18999/33A Expired GB422060A (en) 1932-07-04 1933-07-04 Improvements in or relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB422060A (en)

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