FR796978A - Improvements to coils to produce a uniform magnetic field, particularly applicable to cathode ray tubes - Google Patents

Improvements to coils to produce a uniform magnetic field, particularly applicable to cathode ray tubes

Info

Publication number
FR796978A
FR796978A FR796978DA FR796978A FR 796978 A FR796978 A FR 796978A FR 796978D A FR796978D A FR 796978DA FR 796978 A FR796978 A FR 796978A
Authority
FR
France
Prior art keywords
coils
produce
magnetic field
cathode ray
particularly applicable
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
Other languages
French (fr)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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
Priority claimed from GB3054534A external-priority patent/GB449533A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority claimed from US46272A external-priority patent/US2148398A/en
Application granted granted Critical
Publication of FR796978A publication Critical patent/FR796978A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/70—Electron beam control outside the vessel
    • H01J2229/703—Electron beam control outside the vessel by magnetic fields
    • H01J2229/7031—Cores for field producing elements, e.g. ferrite
FR796978D 1934-10-24 1935-10-22 Improvements to coils to produce a uniform magnetic field, particularly applicable to cathode ray tubes Expired FR796978A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB3054534A GB449533A (en) 1934-10-24 1934-10-24 Improvements in and relating to coils for producing a magnetic field of approximately uniform flux density, for use, for example, with cathode ray tubes
US46272A US2148398A (en) 1934-10-24 1935-10-23 Coil for producing a magnetic field of approximately uniform flux density for use, for example, with cathode ray tubes
US99194A US2132933A (en) 1934-10-24 1936-09-03 Cathode ray tube apparatus

Publications (1)

Publication Number Publication Date
FR796978A true FR796978A (en) 1936-04-18

Family

ID=32045688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR796978D Expired FR796978A (en) 1934-10-24 1935-10-22 Improvements to coils to produce a uniform magnetic field, particularly applicable to cathode ray tubes

Country Status (4)

Country Link
US (1) US2132933A (en)
DE (1) DE763825C (en)
FR (1) FR796978A (en)
NL (1) NL59466C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741397C (en) * 1938-04-27 1943-11-10 Aeg Magnetic deflection element for Braun cathode ray tubes
DE976695C (en) * 1943-09-08 1964-03-05 Philips Nv Deflection coil arrangement for cathode ray tubes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570425A (en) * 1950-05-26 1951-10-09 Philco Corp Deflection yoke
US2785329A (en) * 1952-07-10 1957-03-12 Arthur L Tirico Expanded yoke for deflecting convergent beams
US2964068A (en) * 1955-12-12 1960-12-13 Geo Stevens Mfg Company Coil winding mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741397C (en) * 1938-04-27 1943-11-10 Aeg Magnetic deflection element for Braun cathode ray tubes
DE976695C (en) * 1943-09-08 1964-03-05 Philips Nv Deflection coil arrangement for cathode ray tubes

Also Published As

Publication number Publication date
NL59466C (en)
DE763825C (en) 1952-01-31
US2132933A (en) 1938-10-11

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