EP0216076B1 - Arrangement de bobine à pré-magnétisation réglable - Google Patents
Arrangement de bobine à pré-magnétisation réglable Download PDFInfo
- 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
Links
Images
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)
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)
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 |
-
1985
- 1985-09-27 DE DE19853534451 patent/DE3534451A1/de not_active Ceased
-
1986
- 1986-07-29 EP EP86110440A patent/EP0216076B1/fr not_active Expired - Lifetime
- 1986-07-29 AT AT86110440T patent/ATE50664T1/de not_active IP Right Cessation
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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