EP0216076B1 - Arrangement de bobine à pré-magnétisation réglable - Google Patents

Arrangement de bobine à pré-magnétisation réglable Download PDF

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Publication number
EP0216076B1
EP0216076B1 EP86110440A EP86110440A EP0216076B1 EP 0216076 B1 EP0216076 B1 EP 0216076B1 EP 86110440 A EP86110440 A EP 86110440A EP 86110440 A EP86110440 A EP 86110440A EP 0216076 B1 EP0216076 B1 EP 0216076B1
Authority
EP
European Patent Office
Prior art keywords
coil
arrangement according
coil arrangement
magnet
permanent magnet
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
EP86110440A
Other languages
German (de)
English (en)
Other versions
EP0216076A2 (fr
EP0216076A3 (en
Inventor
Anton Dipl.-Ing.(Fh) Schmeller
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic AG
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 Vogt Electronic AG filed Critical Vogt Electronic AG
Priority to AT86110440T priority Critical patent/ATE50664T1/de
Publication of EP0216076A2 publication Critical patent/EP0216076A2/fr
Publication of EP0216076A3 publication Critical patent/EP0216076A3/de
Application granted granted Critical
Publication of EP0216076B1 publication Critical patent/EP0216076B1/fr
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

Definitions

  • the invention relates to a coil arrangement according to the introductory part of patent claim 1.
  • the known coil arrangements of this type two permanent magnets are provided as the permanent magnet arrangement, which are rotatably and elastically held at the opposite ends of the magnetizable core and are magnetized in such a way that the premagnetization of the core changes when one or the other is rotated in order to be able to compensate for sample variations in tubes and circuits.
  • the known coil arrangements, with their two magnets represent a complicated structure with a relatively large space requirement, which requires a high manufacturing expenditure. For this reason, fixed coil arrangements were used where less accuracy was sufficient.
  • the invention has for its object to provide a coil assembly according to the introductory part of claim 1, which is characterized by a machine-compatible construction and can thus be manufactured in a simple and inexpensive manner so that it instead of the fixed coil assemblies at a comparable price with a about the same small amount of space is available for purposes where higher accuracy requirements have to be met.
  • the coil arrangement according to the invention is characterized by a simple structure comparable to the permanently set coil arrangements, but, unlike this, allows the unavoidable production variations in the magnetic field strength and the saturation magnetization to be compensated, this adjustment being able to be carried out automatically without any problems during the course of production.
  • the coil arrangement according to the invention is particularly well suited for use as a linearity coil for linearizing the deflection current in viewing devices with cathode ray tubes, in which the linear linear coils used for normal television sets cannot be used satisfactorily because of the higher demands on the linearity of lines (subclaim 11). .
  • the dependent claims 2 to 10 have preferred embodiments of the coil arrangement according to claim 1 to the subject.
  • the threaded connection between the bobbin and the magnet according to claim 2 and 3 allows a quick precise adjustment of the magnet against the core, whereby the air gap can be precisely adjusted according to the requirements of the inductance variation.
  • the sub-claims 5 to 7 indicate advantageous core forms.
  • the sub-claim 7 relates to a preferred embodiment of the coil body.
  • the sub-claims 8 to 10 are directed to preferred core materials.
  • FIG. 1 The z. B. coil arrangement that can be used as a linearity coil is shown in FIG. 1 in longitudinal section along section line I - in FIG. 2 and in FIG. 2 in longitudinal section along section line 11-11 in FIG. 1.

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)
  • Details Of Television Scanning (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Magnetic Treatment Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (11)

1. Dispositif à bobine, ayant un noyau saturable magnétiquement et entouré d'une bobine, et un dispositif à aimant permanent, le noyau et le dispositif à aimant permanent pouvant être déplacés l'un par rapport à l'autre pour faire varier la pré- magnétisation du noyau, caractérisé en ce que le dispositif à aimant permanent est constitué d'un aimant permanent (3) unique, maintenu avec formation d'un entrefer (4) à distance du noyau saturable, et la largeur de l'entrefer (4) est réglable.
2. Dispositif à bobine suivant la revendication 1, caractérisé en ce que le réglage de l'entrefer (4) s'effectue au moyen d'un taraudage (8) ménagé dans le corps de bobine (2) et d'un filetage (7) ménagé sur l'aimant (3).
3. Dispositif à bobine suivant la revendication 2, caractérisé en ce que le filetage (8) est formé par des barrettes élastiques sur le corps de bobine (2).
4. Dispositif à bobine suivant l'une des revendications précédentes, caractérisé en ce que le noyau saturable (1) a une section transversale en forme de H.
5. Dispositif à bobine suivant l'une des revendications 1 à 3, caractérisé en ce que le noyau saturable (1) a la forme d'une bobine.
6. Dispositif à bobine suivant l'une des revendications 1 à 3, caractérisé en ce que le noyau saturable (1) est un noyau en forme de champignon.
7. Dispositif à bobine suivant l'une des revendications précédentes, caractérisé en ce que le corps de bobine (2) entoure toute la structure.
8. Dispositif à bobine suivant l'une des revendications précédentes, caractérisé en ce que l'aimant (3) est en ferrite isotrope.
9. Dispositif à bobine suivant l'une des revendications précédentes, caractérisé en ce que l'aimant est en ferrite anisotrope.
10. Dispositif à bobine suivant l'une des revendications précédentes, caractérisé en ce que l'aimant (3) est un aimant de terre rare, qui est logé dans une partie en matière plastique ayant un filetage.
11. Utilisation du dispositif à bobine suivant l'une des revendications précédentes, pour linéariser le courant de déviation d'appareils de visualisation à tubes à rayons cathodiques.
EP86110440A 1985-09-27 1986-07-29 Arrangement de bobine à pré-magnétisation réglable Expired - Lifetime EP0216076B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110440T ATE50664T1 (de) 1985-09-27 1986-07-29 Spulenanordnung mit veraenderbarer vormagnetisierung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853534451 DE3534451A1 (de) 1985-09-27 1985-09-27 Einstellbare linearitaetsspule
DE3534451 1985-09-27

Publications (3)

Publication Number Publication Date
EP0216076A2 EP0216076A2 (fr) 1987-04-01
EP0216076A3 EP0216076A3 (en) 1988-01-07
EP0216076B1 true EP0216076B1 (fr) 1990-02-28

Family

ID=6282092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110440A Expired - Lifetime EP0216076B1 (fr) 1985-09-27 1986-07-29 Arrangement de bobine à pré-magnétisation réglable

Country Status (3)

Country Link
EP (1) EP0216076B1 (fr)
AT (1) ATE50664T1 (fr)
DE (1) DE3534451A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE923858C (de) * 1951-04-05 1955-02-21 Philips Nv Spule mit durch einen Dauermagneten vormagnetisiertem Kern
DE1007394B (de) * 1951-12-29 1957-05-02 Philips Nv Spulensystem mit wenigstens einer Hochfrequenzspule mit vormagnetisiertem Stabkern
DE1188718B (de) * 1962-04-05 1965-03-11 Telefunken Patent Spule mit Kern und zwei bewegbaren Dauermagneten, insbesondere Linearitaetsregler fuer Fernsehempfaenger
JPS5814665U (ja) * 1981-07-21 1983-01-29 日本ビクター株式会社 受像管の偏向装置
JPS5835847A (ja) * 1981-08-27 1983-03-02 Toshiba Corp 撮像管のコイルアセンブリ装置
US4393361A (en) * 1981-09-23 1983-07-12 Prem Magnetics, Inc. Variable magnetically biased linearity control
JPS5897809A (ja) * 1981-12-08 1983-06-10 Matsushita Electric Ind Co Ltd 可変直線性補正コイル
JPS60206008A (ja) * 1984-03-29 1985-10-17 Matsushita Electric Ind Co Ltd リニアリテイコイル

Also Published As

Publication number Publication date
EP0216076A2 (fr) 1987-04-01
DE3534451A1 (de) 1987-04-02
ATE50664T1 (de) 1990-03-15
EP0216076A3 (en) 1988-01-07

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