DE3534451A1 - ADJUSTABLE LINEARITY COIL - Google Patents

ADJUSTABLE LINEARITY COIL

Info

Publication number
DE3534451A1
DE3534451A1 DE19853534451 DE3534451A DE3534451A1 DE 3534451 A1 DE3534451 A1 DE 3534451A1 DE 19853534451 DE19853534451 DE 19853534451 DE 3534451 A DE3534451 A DE 3534451A DE 3534451 A1 DE3534451 A1 DE 3534451A1
Authority
DE
Germany
Prior art keywords
magnet
coil
core
saturable core
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.)
Ceased
Application number
DE19853534451
Other languages
German (de)
Inventor
Anton Dipl Ing 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 DE19853534451 priority Critical patent/DE3534451A1/en
Priority to EP86110440A priority patent/EP0216076B1/en
Priority to AT86110440T priority patent/ATE50664T1/en
Publication of DE3534451A1 publication Critical patent/DE3534451A1/en
Ceased 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
    • H01J29/46—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

Landscapes

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

Abstract

1. Coil arrangement with a magnetically saturable core surrounded by a coil and a permanent magnet arrangement, wherein the permanent magnet arrangement and the core are one adjustable relative to the other for the variable polarisation of the latter, characterised thereby, that the permanent magnet arrangement consists of a single permanent magnet (3) kept at a spacing from the saturable core while forming an air gap (4) and the width of the air gap (4) is adjustable.

Description

In Fernsehgeräten und Monitoren für EDV-Anlagen wird die Linearität der Zeilenablenkung mittels einer permanentmagnetisch vorbelasteten Ferritspule bewirkt.In television sets and monitors for IT systems, the linearity of the Line deflection using a permanently magnetically preloaded ferrite coil causes.

Ursprünglich konnte das Permanentmagnetfeld durch einen Zweitmagneten eingestellt werden, um die Exemplarstreuungen der Röhren und der gesamten Schaltung ausgleichen zu können. Die weitere Entwicklung führte zu fest eingestellten Linearitätsspulen, die für die normalen Fernsehgeräte in ausreichender Genauigkeit hergestellt werden konnten. Monitore von EDV-Anlagen stellen jedoch wesentlich höhere Ansprüche an die Zeilenlinearität, so daß ein Weg zu suchen war, diese Forderungen zu erfüllen, ohne auf das komplizierte Gebilde des ursprünglichen Linearitätsreglers mit mindestens zwei Magneten und einem sättigbaren Kern in der eigentlichen Spule zurückgreifen zu müssen.Originally, the permanent magnetic field could be set by a second magnet to the sample scatter of the tubes and the entire circuit to be able to compensate. The further development led to permanent employment Linearity coils that are sufficient for normal television sets could be produced. However, monitors of computer systems pose much higher demands on line linearity, so that a way to look was to meet these demands without relying on the complicated structure of the original Linearity controller with at least two magnets and one saturable Need to resort to the core in the actual coil.

Die erfindungsgemäße Ausführung erlaubt in einfacher automatengerechter und preisgünstiger Weise die Herstellung von Linearitätsspulen dadurch, daß der Luftspalt zwischen dem Permanentmagneten und dem sättigbaren Kern einstellbar ausgeführt ist. Dies kann in an sich bekannter Weise dadurch bewerkstelligt werden, daß der Spulenkörper (2), der den sättigbaren Kern (1) aufnimmt, derart ausgestaltet ist, daß er ein Innengewinde (8) aufweist, in dem der mit einem Außengewinde (7) versehene Magnet (3) zügig verstellt werden kann, womit der Luftspalt (4) entsprechend den Erfordernissen der Induktivitätsvariation eingestellt wird.The embodiment according to the invention allows the production of linearity coils in a simple, machine-friendly and inexpensive manner in that the air gap between the permanent magnet and the saturable core is designed to be adjustable. This can be accomplished in a manner known per se in that the coil former ( 2 ), which receives the saturable core ( 1 ), is designed in such a way that it has an internal thread ( 8 ) in which the one with an external thread ( 7 ) Magnet ( 3 ) can be adjusted quickly, with which the air gap ( 4 ) is adjusted according to the requirements of the inductance variation.

Durch diese Konstruktion können darüberhinaus die unvermeidlichen Fertigungsstreuungen in der Magnetfeldstärke und der Sättigungsmagnetisierung ausgeglichen werden. Das Prinzip ist insbesondere anwendbar bei Spulenkernkonfigurationen, die eine Art Flansch aufweisen, wie z. B. Garnrollen, H-Kernen und Pilzkernen.This construction can also avoid the inevitable manufacturing spread balanced in the magnetic field strength and the saturation magnetization will. The principle is particularly applicable to coil core configurations, which have a type of flange such. B. spools of thread, H cores and mushroom cores.

In den Abbildungen ist jedoch nur die H-Kern-Konstruktion angeführt, da sich die anderen Kernformen sinngemäß daraus ergeben. In the pictures, however, only the H-core construction is shown, because the other core forms result from it.  

In der Fig. 1 und 2 bedeuten
(1) sättigbarer (Ferrit)-Kern
(2) Spulenkörper
(3) Magnet
(4) Luftspalt
(5) Spule
(6) Spulenanschlüsse
(7) Außengewinde des Magneten
(8) Innengewinde im Spulenkörper (2)Mean in Fig. 1 and 2
( 1 ) saturable (ferrite) core
( 2 ) bobbin
( 3 ) magnet
( 4 ) air gap
( 5 ) coil
( 6 ) Coil connections
( 7 ) External thread of the magnet
( 8 ) internal thread in the bobbin ( 2 )

In Abb. 3 ist eine Kurvenschar der Induktivitätsvariation über dem Strom in Abhängigkeit vom Luftspalt (4) beispielhaft dargestellt. Fig. 3 shows an example of a family of curves of the inductance variation over the current as a function of the air gap ( 4 ).

Claims (9)

1) Linearitätsspule mit einem Permanentmagneten, einem magnetisch sättigbaren Kern mit darauf aufgebrachter Spule, dadurch gekennzeichnet, daß der Luftspalt zwischen dem Permanentmagneten und dem sättigbaren Kern einstellbar ist.1) Linearity coil with a permanent magnet, a magnetically saturable core with a coil applied thereon, characterized in that the air gap between the permanent magnet and the saturable core is adjustable. 2) Nach 1) dadurch gekennzeichnet, daß die Einstellung des Luftspalts mittels eines Innengewindes im Spulenkörper, das auch durch elastische Stege gebildet werden kann und eines Außengewindes am Magneten erfolgt.2) After 1) characterized in that the adjustment of the air gap by means of an internal thread in the coil body, which is also formed by elastic webs can be and there is an external thread on the magnet. 3) Nach 1) und 2) dadurch gekennzeichnet, daß der sättigbare Kern H-förmig ausgestaltet ist.3) According to 1) and 2), characterized in that the saturable core is H-shaped is. 4) Nach 1) und 2) dadurch gekennzeichnet, daß der sättigbare Kern die Form einer Garnrolle aufweist.4) According to 1) and 2) characterized in that the saturable core is in the form of a Has spool of thread. 5) Nach 1) und 2) dadurch gekennzeichnet, daß der sättigbare Kern ein sogenannter Pilzkern ist.5) After 1) and 2), characterized in that the saturable core is a so-called Is mushroom core. 6. Nach einem oder mehreren der vorgehenden Ansprüche dadurch gekennzeichnet, daß der Spulenkörper das gesamte Gebilde umschließt.6. According to one or more of the preceding claims, characterized in that the coil body encloses the entire structure. 7) Nach einem oder mehreren der vorangegangenen Ansprüche dadurch gekennzeichnet, daß der Magnet aus isotropem Ferrit besteht.7) characterized according to one or more of the preceding claims, that the magnet is made of isotropic ferrite. 8) Nach einem oder mehreren der vorgehenden Ansprüche dadurch gekennzeichnet, daß der Magnet aus anisotropem Ferrit besteht.8) According to one or more of the preceding claims, characterized in that the magnet is made of anisotropic ferrite. 9) Nach einem oder mehreren der vorangegangenen Ansprüche dadurch gekennzeichnet, daß der Magnet ein Seltenerd-Magnet ist, der in einem Kunststoffteilaußengewinde untergebracht ist.9) characterized according to one or more of the preceding claims, that the magnet is a rare earth magnet, which is in a plastic part external thread is housed.
DE19853534451 1985-09-27 1985-09-27 ADJUSTABLE LINEARITY COIL Ceased DE3534451A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19853534451 DE3534451A1 (en) 1985-09-27 1985-09-27 ADJUSTABLE LINEARITY COIL
EP86110440A EP0216076B1 (en) 1985-09-27 1986-07-29 Coil arrangement with adjustable pre-magnetisation
AT86110440T ATE50664T1 (en) 1985-09-27 1986-07-29 COIL ARRANGEMENT WITH VARIABLE PREMAGNETIZATION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853534451 DE3534451A1 (en) 1985-09-27 1985-09-27 ADJUSTABLE LINEARITY COIL

Publications (1)

Publication Number Publication Date
DE3534451A1 true DE3534451A1 (en) 1987-04-02

Family

ID=6282092

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853534451 Ceased DE3534451A1 (en) 1985-09-27 1985-09-27 ADJUSTABLE LINEARITY COIL

Country Status (3)

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE923858C (en) * 1951-04-05 1955-02-21 Philips Nv Coil with a core pre-magnetized by a permanent magnet
DE1007394B (en) * 1951-12-29 1957-05-02 Philips Nv Coil system with at least one high frequency coil with a pre-magnetized rod core
JPS5897809A (en) * 1981-12-08 1983-06-10 Matsushita Electric Ind Co Ltd Magnetic saturated variable inductor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188718B (en) * 1962-04-05 1965-03-11 Telefunken Patent Coil with core and two movable permanent magnets, especially linearity regulator for television receivers
JPS5814665U (en) * 1981-07-21 1983-01-29 日本ビクター株式会社 picture tube deflection device
JPS5835847A (en) * 1981-08-27 1983-03-02 Toshiba Corp Coil assembly for camera tube
US4393361A (en) * 1981-09-23 1983-07-12 Prem Magnetics, Inc. Variable magnetically biased linearity control
JPS60206008A (en) * 1984-03-29 1985-10-17 Matsushita Electric Ind Co Ltd Linearity coil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE923858C (en) * 1951-04-05 1955-02-21 Philips Nv Coil with a core pre-magnetized by a permanent magnet
DE1007394B (en) * 1951-12-29 1957-05-02 Philips Nv Coil system with at least one high frequency coil with a pre-magnetized rod core
JPS5897809A (en) * 1981-12-08 1983-06-10 Matsushita Electric Ind Co Ltd Magnetic saturated variable inductor

Also Published As

Publication number Publication date
EP0216076A3 (en) 1988-01-07
ATE50664T1 (en) 1990-03-15
EP0216076A2 (en) 1987-04-01
EP0216076B1 (en) 1990-02-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8131 Rejection