MY107095A - Magnetic shunt for defletion yokes. - Google Patents

Magnetic shunt for defletion yokes.

Info

Publication number
MY107095A
MY107095A MYPI90000246A MYPI19900246A MY107095A MY 107095 A MY107095 A MY 107095A MY PI90000246 A MYPI90000246 A MY PI90000246A MY PI19900246 A MYPI19900246 A MY PI19900246A MY 107095 A MY107095 A MY 107095A
Authority
MY
Malaysia
Prior art keywords
magnetic field
shunt
screen
deflection coil
ring
Prior art date
Application number
MYPI90000246A
Inventor
Francis Hevesi Joseph
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of MY107095A publication Critical patent/MY107095A/en

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
    • 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
    • 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
    • H01J2229/0015—Preventing or cancelling fields leaving the enclosure

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

APPARATUS FOR REDUCING NET DISTRIBUTED MAGNETIC RADIATION IN FRONT OF AND ALL ABOUT THE OUTSIDE OF A CATHODE RAY TUBE DISPLAY DEVICE. IN SUCH CATHODE RAY APPARATUS A DEFLECTION COIL IS PROVIDED HAVING AXIALLY ALIGNED AND CIRCUMFERENTIALLY ALIGNED WIRE SEGMENTS, RELATIVE TO THE CENTRAL AXIS THEREOF, PRODUCING A DISTRIBUTED MAGNETIC FIELD IN FRONT OF THE SCREEN AS WELL AS ALL ABOUT THE OUTSIDE OF THE DEVICE WHICH IS UNDESIRABLE. THE INVENTION PROVIDES A MAGNETIC SHUNT DISPOSED BETWEEN THE DEFLECTION COIL AND THE SCREEN, THE SHUNT COMPRISING A SUBSTANTIALLY RING-SHAPED ARRANGEMENT OF MAGNETICALLY PERMEABLE MATERIAL AND A PAIR OF COUPLING WIRE LOOPS ABOUT SAID RING ELECTRICALLY COUPLED IN SERIES WITH THE DEFLECTION COIL TO INDUCE A MAGNETIC FIELD IN THE RING TO MAXIMIZE CANCELLATION OF THE NET DISTRIBUTED MAGNETIC FIELD AT A SELECTED POINT IN SPACE IN FRONT OF SAID SCREEN AS WELL AS ALL ABOUT THE DISPLAY DEVICE, SO AS TO PROVIDE OPTIMIZED OVERALL MAGNETIC FIELD REDUCTION THROUGH THE ACTION OF THE SHUNT.( FIG. 13 )
MYPI90000246A 1989-03-13 1990-02-14 Magnetic shunt for defletion yokes. MY107095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32247089A 1989-03-13 1989-03-13

Publications (1)

Publication Number Publication Date
MY107095A true MY107095A (en) 1995-09-30

Family

ID=23255050

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI90000246A MY107095A (en) 1989-03-13 1990-02-14 Magnetic shunt for defletion yokes.

Country Status (9)

Country Link
EP (1) EP0446501A1 (en)
JP (1) JPH02299134A (en)
KR (1) KR920005005B1 (en)
CN (1) CN1046636A (en)
AU (1) AU623227B2 (en)
BR (1) BR9001146A (en)
CA (1) CA2011508A1 (en)
MY (1) MY107095A (en)
NZ (1) NZ232662A (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103382A (en) * 1983-11-10 1985-06-07 積水樹脂株式会社 Method of taking pattern dimensions for painted shelf with pattern
DE3439808A1 (en) * 1984-10-31 1986-04-30 Standard Elektrik Lorenz Ag, 7000 Stuttgart DEFLECTION SYSTEM FOR COLORED TUBES
JPS6293841A (en) * 1985-10-17 1987-04-30 Mitsubishi Electric Corp Unnecessary radiation preventing device
US4853588A (en) * 1986-09-05 1989-08-01 Denki Onkyo Co., Ltd. Deflection yoke apparatus with means for reducing unwanted radiation
SE456056B (en) * 1986-12-10 1988-08-29 Telub Holding Ab IMAGE DEVICE TO REDUCE THE MAGNETIC FIELD STRENGTH IN THE IMAGE OF THE IMAGE
EP0314671A1 (en) * 1987-02-19 1989-05-10 HANTAREX S.p.A. Device for limiting the magnetic emission in cathode ray tube monitors
GB2208034A (en) * 1987-08-13 1989-02-15 Ibm Reducing magnetic radiation in front of a cathode ray tube screen

Also Published As

Publication number Publication date
JPH02299134A (en) 1990-12-11
KR900015235A (en) 1990-10-26
NZ232662A (en) 1992-01-29
KR920005005B1 (en) 1992-06-22
AU5018290A (en) 1990-09-13
AU623227B2 (en) 1992-05-07
BR9001146A (en) 1991-03-05
EP0446501A1 (en) 1991-09-18
CA2011508A1 (en) 1990-09-13
CN1046636A (en) 1990-10-31

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