GB1252201A - - Google Patents

Info

Publication number
GB1252201A
GB1252201A GB1252201DA GB1252201A GB 1252201 A GB1252201 A GB 1252201A GB 1252201D A GB1252201D A GB 1252201DA GB 1252201 A GB1252201 A GB 1252201A
Authority
GB
United Kingdom
Prior art keywords
coils
demagnetizing
tube
pair
grill
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
English (en)
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 filed Critical
Publication of GB1252201A publication Critical patent/GB1252201A/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)
GB1252201D 1969-04-17 1969-04-17 Expired GB1252201A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1967669 1969-04-17

Publications (1)

Publication Number Publication Date
GB1252201A true GB1252201A (enrdf_load_stackoverflow) 1971-11-03

Family

ID=10133333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252201D Expired GB1252201A (enrdf_load_stackoverflow) 1969-04-17 1969-04-17

Country Status (1)

Country Link
GB (1) GB1252201A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177539A (en) * 1985-05-20 1987-01-21 Mitsubishi Electric Corp Magnetic shielding system in color television receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177539A (en) * 1985-05-20 1987-01-21 Mitsubishi Electric Corp Magnetic shielding system in color television receiver
GB2177539B (en) * 1985-05-20 1989-07-05 Mitsubishi Electric Corp Magnetic shielding system in color television receiver
US4943755A (en) * 1985-05-20 1990-07-24 Mitsubishi Denki Kabushiki Kaisha Magnetic shielding with constant-current coils for CRT

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years