GB686270A - Improvements in or relating to deflecting coils for cathode ray tubes - Google Patents

Improvements in or relating to deflecting coils for cathode ray tubes

Info

Publication number
GB686270A
GB686270A GB23861/50A GB2386150A GB686270A GB 686270 A GB686270 A GB 686270A GB 23861/50 A GB23861/50 A GB 23861/50A GB 2386150 A GB2386150 A GB 2386150A GB 686270 A GB686270 A GB 686270A
Authority
GB
United Kingdom
Prior art keywords
tube
conductors
coils
loops
sheet metal
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
GB23861/50A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB686270A publication Critical patent/GB686270A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Landscapes

  • Details Of Television Scanning (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

686,270. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 29, 1950 [Oct. 4, 1949], No. 23861/50. Class 39(i) [Also in Groups XXII and XXXV] Cathode ray tube deflection coils are formed of wire or sheet metal which may be self supportingly mounted on the tube and comprise two spaced closed conductors surrounding the tube at right angles to the axis and connected by two conductors parallel to the axis diametrically opposite the tube. Two sets of deflection coils may have a common annulus 41 at one end and concentric annuli 39, 51 at the other end. Loops 38, 49 in series with the annuli and the longitudinal strip conductors 40, 42 and 52, 53 respectively form the secondary windings of deflection current transformers mounted in the loops. The longitudinal strips may be subdivided into spaced parallel strips to reduce eddy currents and produce a particular distribution of current avoiding distortion. The combined line and frame scanning coils, to avoid waste of material, may be punched from sheet metal in a developed form having the conductors 52, 40 at right angles and contiguous coil units nested together, after shaping the coil units being spot welded at the junctions 46, 47.
GB23861/50A 1949-10-04 1950-09-29 Improvements in or relating to deflecting coils for cathode ray tubes Expired GB686270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL285960X 1949-10-04

Publications (1)

Publication Number Publication Date
GB686270A true GB686270A (en) 1953-01-21

Family

ID=19782513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23861/50A Expired GB686270A (en) 1949-10-04 1950-09-29 Improvements in or relating to deflecting coils for cathode ray tubes

Country Status (7)

Country Link
US (1) US2722621A (en)
BE (1) BE498448A (en)
CH (1) CH285960A (en)
DE (1) DE895482C (en)
FR (1) FR1025382A (en)
GB (1) GB686270A (en)
NL (2) NL73510C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE529658A (en) * 1953-07-10
BE529660A (en) * 1953-09-24
BE534604A (en) * 1954-01-15
US2813212A (en) * 1955-12-28 1957-11-12 Rca Corp Electromagnetic cathode ray beam deflection system
US2919381A (en) * 1956-07-25 1959-12-29 Farrand Optical Co Inc Electron lens
US2882431A (en) * 1956-11-13 1959-04-14 Park Products Company Self-convergent deflection yoke for a color tv cathode ray tube and system using the same
GB1342069A (en) * 1970-12-15 1973-12-25 Thorn Electrical Ind Ltd Electrically conductive components

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1789129A (en) * 1927-12-08 1931-01-13 Vincent G Apple Bar winding
US1834925A (en) * 1928-10-26 1931-12-08 Vincent G Apple Method of making armature coils
FR747139A (en) * 1931-11-10 1933-06-12 Devices for deflecting electronic currents in cathode ray tubes
BE406679A (en) * 1933-12-07
US2227053A (en) * 1935-03-28 1940-12-31 Telefunken Gmbh Magnetic coil for deviating cathode rays
DE724550C (en) * 1935-05-23 1942-10-01 Fernseh Gmbh Magnetic deflection system for Braun tubes
US2208939A (en) * 1935-07-16 1940-07-23 Firm Fernseh Ag Magnetic deflecting system for braun tubes
BE440984A (en) * 1939-08-09
US2324089A (en) * 1941-12-09 1943-07-13 Bell Telephone Labor Inc Electron discharge apparatus
US2578343A (en) * 1946-06-13 1951-12-11 Bell Telephone Labor Inc Deflection coil testing apparatus and method
US2490181A (en) * 1946-11-18 1949-12-06 Vickers Inc Alternating current machine
NL72993C (en) * 1948-08-10

Also Published As

Publication number Publication date
CH285960A (en) 1952-09-30
NL149134B (en)
BE498448A (en)
DE895482C (en) 1953-11-02
NL73510C (en)
US2722621A (en) 1955-11-01
FR1025382A (en) 1953-04-14

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