US3758888A - Toroidal deflection yoke - Google Patents

Toroidal deflection yoke Download PDF

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Publication number
US3758888A
US3758888A US00232443A US3758888DA US3758888A US 3758888 A US3758888 A US 3758888A US 00232443 A US00232443 A US 00232443A US 3758888D A US3758888D A US 3758888DA US 3758888 A US3758888 A US 3758888A
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US
United States
Prior art keywords
coil
deflection
toroidal
horizontal
partitions
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 - Lifetime
Application number
US00232443A
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English (en)
Inventor
T Kadota
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of US3758888A publication Critical patent/US3758888A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J29/764—Deflecting by magnetic fields only using toroidal windings

Definitions

  • This invention relates to a deflection yoke for use in the deflection system of cathode-ray tubes and more particularly to the construction of a so-called toroidal deflection yoke in which both the horizontal and vertical deflection coils are mounted on a toroidal core.
  • the other guide a ring comprises an annular side wall 51 which fits snugly in the inner periphery of the small-diameter end portion 3 of the toroidal core 1, a flange portion 52 extending outwardly from the side wall 51 so as to engage the end face of the small-diameter end portion 3 of the toroidal core 1, and a plurality of equally spaced vanelike partitions 53 projecting radially inwards from the side wall 51 and axially rearwards from the flange portion 52.
  • the side wall 51, flange portion 52 and partitions 53 are made of an electrical insulator and are moded into an integral unit from, for example, a synthetic resin.
  • the wire may merely be wound in the individual blocks defined between the partitions 43 and 53during the winding operation with this manner of winding, the coil portions in the individual blocks are confined within the areas between the partitions 43 and 53, thereby attaining the same effect as when the width of the groove provided for each coil turn in the conventional deflection yoke is enlarged to a greater width.
  • the toroidal deflection yoke according to the present invention is advantageous in that extremely high precision is not required in the manufacturing process including the winding step and the yoke can be very easily manufactured.
  • the assembly may be supported on the machine by clamping or otherwise holding the end portions of the partitions 43 and 53 so as to avoid direct contact of the wire with the machine while the assembly is supported on the machine and while it is mounted on and dismounted from the machine, thereby eliminating damage to the wire.
  • the toroidal core 1 must be supported on the machine in such a manner that its axis is always maintained in the predetermined position.
  • the toroidal core 1 can be supported in such a position by clamping the partitions 43 and 53 which are always maintained in the fixed dimensional position throughout the wire winding operation until the horizontal and vertical deflection coils 6 and 7 are completely formed.
  • the toroidal core 1 can be accurately supported in the predetermined axial position throughout the winding operation, and the prior defect can be eliminated in which the axis of the toroidal core is gradually displaced as the wire is successively wound.
  • the toroidal deflection yoke formed in this manner is advantageous in that it has a uniform magnetic field distribution. It will be understood-that this toroidal deflection yoke possesses all the advantages possessed by the first embodiment.
  • a toroidal deflection yoke comprising: an annular core of a magnetic material; deflection coil guide means provided at the opposite ends of said annular coil and having a plurality of bladeshaped partitions extending radially and longitudinally of said annular core, said partitions dividing said core into a plurality of blocks; and a plurality of deflection coil portions, each portion comprising a plurality of turns wound in a corresponding one of said blocks, said partitions having a height larger than the full height of the plurality of turns of each coil portion would in the block form by adjacent partitions.
  • deflection coil portions comprise respective portions of horizontal and vertical deflection coils for an electron beam tube, and wherein the spacing between adjacent blade-shaped partitions between which one coil portion of one of said horizontal and vertical deflection coils is wound decreases from a maximum at the location of the coil portion forming the center of said one of said horizontal and vertical deflection coils to a minimum at the furthest circumferentially distant ends of said one coil from said center.

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US00232443A 1972-03-06 1972-03-07 Toroidal deflection yoke Expired - Lifetime US3758888A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1042272A GB1370829A (en) 1972-03-06 1972-03-06 Toroidal deflection yoke for cathode ray tubes
US23244372A 1972-03-07 1972-03-07
FR7208810A FR2175567B1 (enrdf_load_html_response) 1972-03-06 1972-03-14
DE19722212557 DE2212557A1 (de) 1972-03-06 1972-03-15 Toroidales ablenkjoch

Publications (1)

Publication Number Publication Date
US3758888A true US3758888A (en) 1973-09-11

Family

ID=27431452

Family Applications (1)

Application Number Title Priority Date Filing Date
US00232443A Expired - Lifetime US3758888A (en) 1972-03-06 1972-03-07 Toroidal deflection yoke

Country Status (4)

Country Link
US (1) US3758888A (enrdf_load_html_response)
DE (1) DE2212557A1 (enrdf_load_html_response)
FR (1) FR2175567B1 (enrdf_load_html_response)
GB (1) GB1370829A (enrdf_load_html_response)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801941A (en) * 1972-01-13 1974-04-02 Plessey Handel Investment Ag Coil winding
US3859719A (en) * 1973-11-12 1975-01-14 Gen Instrument Corp Method of making a toroidal core-coil combination with in situ molded end rings
US3875543A (en) * 1973-11-12 1975-04-01 Gen Instrument Corp Toroidal core-coil combination with in situ molded end rings
US3996542A (en) * 1975-04-14 1976-12-07 Rca Corporation Deflection yoke having nonradial winding distribution
US4023129A (en) * 1975-04-14 1977-05-10 Rca Corporation Deflection yoke with non-radial conductors
FR2489641A1 (fr) * 1980-08-28 1982-03-05 Rca Corp Culasse de deviation autoconvergente, procede d'enroulement et appareil pour la mise en oeuvre du procede
DE3140434A1 (de) * 1980-10-13 1982-07-01 Denki Onkyo Co., Ltd., Tokyo Ablenkjoch
US4954233A (en) * 1989-08-07 1990-09-04 A. O. Smith Corporation Combination anode mount and hot water outlet utilizing a cam lock
US20030165652A1 (en) * 2000-04-17 2003-09-04 Xyron, Inc. Method and device for making a magnetically mountable substrate construction from a selected substrate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62107352U (enrdf_load_html_response) * 1985-12-25 1987-07-09
JPH0652811A (ja) * 1992-07-28 1994-02-25 Murata Mfg Co Ltd 偏向ヨーク

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3569881A (en) * 1969-08-19 1971-03-09 Sylvania Electric Prod Combined deflection yoke and housing
US3634796A (en) * 1969-03-28 1972-01-11 Matsushita Electric Ind Co Ltd Deflecting yoke
US3643192A (en) * 1970-06-03 1972-02-15 Rca Corp Toroidal electromagnetic deflection yoke

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634796A (en) * 1969-03-28 1972-01-11 Matsushita Electric Ind Co Ltd Deflecting yoke
US3569881A (en) * 1969-08-19 1971-03-09 Sylvania Electric Prod Combined deflection yoke and housing
US3643192A (en) * 1970-06-03 1972-02-15 Rca Corp Toroidal electromagnetic deflection yoke

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801941A (en) * 1972-01-13 1974-04-02 Plessey Handel Investment Ag Coil winding
US3859719A (en) * 1973-11-12 1975-01-14 Gen Instrument Corp Method of making a toroidal core-coil combination with in situ molded end rings
US3875543A (en) * 1973-11-12 1975-04-01 Gen Instrument Corp Toroidal core-coil combination with in situ molded end rings
US3996542A (en) * 1975-04-14 1976-12-07 Rca Corporation Deflection yoke having nonradial winding distribution
US4023129A (en) * 1975-04-14 1977-05-10 Rca Corporation Deflection yoke with non-radial conductors
FR2489641A1 (fr) * 1980-08-28 1982-03-05 Rca Corp Culasse de deviation autoconvergente, procede d'enroulement et appareil pour la mise en oeuvre du procede
DE3140434A1 (de) * 1980-10-13 1982-07-01 Denki Onkyo Co., Ltd., Tokyo Ablenkjoch
US4378544A (en) * 1980-10-13 1983-03-29 Denki Onkyo Co., Ltd. Deflection yoke
US4954233A (en) * 1989-08-07 1990-09-04 A. O. Smith Corporation Combination anode mount and hot water outlet utilizing a cam lock
US20030165652A1 (en) * 2000-04-17 2003-09-04 Xyron, Inc. Method and device for making a magnetically mountable substrate construction from a selected substrate

Also Published As

Publication number Publication date
FR2175567A1 (enrdf_load_html_response) 1973-10-26
DE2212557A1 (de) 1973-10-18
FR2175567B1 (enrdf_load_html_response) 1977-04-01
GB1370829A (en) 1974-10-16

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