GB1171138A - Improvements in or relating to Ferromagnetic Screening Caps for Colour Picture Tubes having Rectangular Display Screens - Google Patents

Improvements in or relating to Ferromagnetic Screening Caps for Colour Picture Tubes having Rectangular Display Screens

Info

Publication number
GB1171138A
GB1171138A GB51552/66A GB5155266A GB1171138A GB 1171138 A GB1171138 A GB 1171138A GB 51552/66 A GB51552/66 A GB 51552/66A GB 5155266 A GB5155266 A GB 5155266A GB 1171138 A GB1171138 A GB 1171138A
Authority
GB
United Kingdom
Prior art keywords
tube
coils
cap
ferromagnetic
nov
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
GB51552/66A
Other languages
English (en)
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1171138A publication Critical patent/GB1171138A/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
    • H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/003—Preventing or cancelling fields entering the enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/0046—Preventing or cancelling fields within the enclosure
    • H01J2229/0053—Demagnetisation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Resistance Heating (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
GB51552/66A 1965-11-20 1966-11-17 Improvements in or relating to Ferromagnetic Screening Caps for Colour Picture Tubes having Rectangular Display Screens Expired GB1171138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6515107A NL6515107A (en:Method) 1965-11-20 1965-11-20

Publications (1)

Publication Number Publication Date
GB1171138A true GB1171138A (en) 1969-11-19

Family

ID=19794708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51552/66A Expired GB1171138A (en) 1965-11-20 1966-11-17 Improvements in or relating to Ferromagnetic Screening Caps for Colour Picture Tubes having Rectangular Display Screens

Country Status (10)

Country Link
US (1) US3340417A (en:Method)
AT (1) AT261692B (en:Method)
BE (1) BE689942A (en:Method)
CH (1) CH458434A (en:Method)
DE (1) DE1462864A1 (en:Method)
FR (1) FR1504853A (en:Method)
GB (1) GB1171138A (en:Method)
NL (1) NL6515107A (en:Method)
NO (1) NO118979B (en:Method)
SE (1) SE323982B (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316119A (en) * 1979-02-16 1982-02-16 Rca Corporation Tilted unitary degaussing coil arrangement
GB2365204A (en) * 2000-06-01 2002-02-13 Sony Electronics A magnetic shield for a cathode ray tube

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431454A (en) * 1967-07-31 1969-03-04 Zenith Radio Corp Cathode-ray tube magnetic shield and tube mount
US3614519A (en) * 1967-12-18 1971-10-19 Zenith Radio Corp Cathode-ray tube magnetic shield
US3571652A (en) * 1969-04-14 1971-03-23 Sony Corp Degaussing device for color picture tube having parallel-slitted beam-selecting grid
NL167289C (nl) * 1973-09-13 1981-11-16 Philips Nv Kleurentelevisieweergeefinrichting voorzien van een kleurentelevisiebeeldbuis en een ontmagnetiserings- inrichting.
US4943755A (en) * 1985-05-20 1990-07-24 Mitsubishi Denki Kabushiki Kaisha Magnetic shielding with constant-current coils for CRT
DE3625383A1 (de) * 1986-07-26 1988-02-04 Grundig Emv Entmagnetisierungseinrichtung fuer eine farbfernsehbildroehre
FR2606574B1 (fr) * 1986-11-07 1989-01-13 Videocolor Dispositif de protection de tubes cathodiques a masque vis-a-vis du champ magnetique terrestre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316119A (en) * 1979-02-16 1982-02-16 Rca Corporation Tilted unitary degaussing coil arrangement
GB2365204A (en) * 2000-06-01 2002-02-13 Sony Electronics A magnetic shield for a cathode ray tube
US6597100B2 (en) 2000-06-01 2003-07-22 Sony Electronics (Singapore) Pte Ltd Magnetic shield for a cathode ray tube

Also Published As

Publication number Publication date
FR1504853A (fr) 1967-12-08
AT261692B (de) 1968-05-10
BE689942A (en:Method) 1967-05-18
NO118979B (en:Method) 1970-03-09
DE1462864A1 (de) 1969-01-02
SE323982B (en:Method) 1970-05-19
CH458434A (de) 1968-06-30
NL6515107A (en:Method) 1967-05-22
US3340417A (en) 1967-09-05

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