DE3717717A1 - Current-compensated annular-core inductor having increased stray inductance - Google Patents

Current-compensated annular-core inductor having increased stray inductance

Info

Publication number
DE3717717A1
DE3717717A1 DE19873717717 DE3717717A DE3717717A1 DE 3717717 A1 DE3717717 A1 DE 3717717A1 DE 19873717717 DE19873717717 DE 19873717717 DE 3717717 A DE3717717 A DE 3717717A DE 3717717 A1 DE3717717 A1 DE 3717717A1
Authority
DE
Germany
Prior art keywords
current
compensated
ring
choke
magnetically conductive
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.)
Granted
Application number
DE19873717717
Other languages
German (de)
Other versions
DE3717717C2 (en
Inventor
Willi Wimmer
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 DE19873717717 priority Critical patent/DE3717717A1/en
Publication of DE3717717A1 publication Critical patent/DE3717717A1/en
Application granted granted Critical
Publication of DE3717717C2 publication Critical patent/DE3717717C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/062—Toroidal core with turns of coil around it
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Abstract

A current-compensated annular-core suppression inductor is described which has increased inductance and likewise increased stray inductance as a result of a magnetically conductive ring surrounding it.

Description

In der Entstörtechnik sind allgemein stromkompensierte Ring­ kerndrosseln mit magnetisch leitendem Kern, insbesondere aus einem geeigneten Ferrit bekannt. Diese Art von Drosseln beseitigt im Normalfall nur die sogen. asymmetrischen Störun­ gen. Nun treten in störenden Geräten darüberhinaus aber auch noch symmetrische Störungen auf, die ggf. durch zusätzliche Maßnahmen, z.B. Stabkerndrosseln, beseitigt werden müssen. Der Aufwand ist somit hoch, und es war eine Lösung zu finden, die sowohl die asymmetrischen als auch die symme­ trischen Störungen mit einem Bauteil zu beseitigen.In the interference suppression technology there are generally current-compensated rings core chokes with a magnetically conductive core, in particular known from a suitable ferrite. That kind of chokes normally only eliminates the so-called. asymmetrical disturbance Now, however, there are also disturbing devices still symmetrical interference, which may be caused by additional Measures, e.g. Rod core chokes to be eliminated have to. The effort is therefore high and it was a solution to find both the asymmetrical and the symme eliminate malfunctions with one component.

Aus den OS 33 50 494 und 34 45 879 sind stromkompensierte Ringkerndrosseln mit einem magnetischen Bypass bekannt.OS 33 50 494 and 34 45 879 are current-compensated Toroidal chokes with a magnetic bypass are known.

Es hat sich nun überraschenderweise gezeigt, diesen Bypass in Form eines Ringes aus magnetisch leitendem Material, vor­ zugsweise Ferrit, um die stromkompensierte Drossel zu legen. Dadurch ergibt sich eine wesentlich größere Streuinduktivität als nach den zitierten OS.Surprisingly, this bypass has now been shown in the form of a ring made of magnetically conductive material preferably ferrite to place the current-compensated choke. This results in a significantly larger leakage inductance than after the OS quoted.

Dies ergibt in Entstörschaltungen somit eine wesentlich besse­ re Entstörwirkung als ohne zusätzliche Maßnahmen bisher er­ reicht werden konnte.This results in a much better result in interference suppression circuits re interference suppression than without additional measures so far could be enough.

Die Montage dieses Bypass-Ringes kann nach jeder beliebigen Methode, z.B. Kleben, mit der Drossel in einem geeigneten Gehäuse vergiessen o. dergl. vorgenommen werden. Gleichzeitig wird mit diesem ringförmigen magnetischen Bypass erreicht, daß das nach außen tretende Streufeld deutlich verringert wird, was bei engen Aufbauten vorteilhaft ist.
The assembly of this bypass ring can be carried out by the throttle in a suitable housing or the like using any method, for example gluing. At the same time, this ring-shaped magnetic bypass ensures that the stray field emerging to the outside is significantly reduced, which is advantageous in the case of narrow structures.

In der Abbildung wird die Erfindung schematisch dargestellt.The invention is shown schematically in the figure.

(1) ist der mit den sich magnetisch kompensierenden Wick­ lungen (2) versehenen Ringkern aus magnetisch leitendem Material.( 1 ) is provided with the magnetically compensating windings ( 2 ) toroidal core made of magnetically conductive material.

Diese so gebildete Ringkerndrossel ist von dem erfindungs­ gemäßen magnetisch leitenden ring (3) umgeben.This ring core choke thus formed is surrounded by the magnetically conductive ring ( 3 ) according to the invention.

Claims (5)

1. Stromkompensierte Ringkerndrossel mit erhöhter Streuinduktivität mit magnetisch leitendem Kern dadurch gekennzeichnet, daß der Streufluß durch einen die Drossel umgebenden magnetisch leitenden Ring beeinflußt ist.1. Current-compensated toroidal choke with increased leakage inductance with a magnetically conductive core, characterized in that the leakage flux is influenced by a magnetically conductive ring surrounding the choke. 2. Stromkompensierte Ringkerndrossel nach Anspruch 1 dadurch gekennzeichnet, daß der Ring aus Ferrit mit geeigneten magnetischen Eigenschaften besteht.2. Current-compensated toroidal choke according to claim 1, characterized in that the ring is made of ferrite with suitable magnetic properties. 3. Stromkompensierte Ringkerndrossel nach Anspruch 1 dadurch gekennzeichnet, daß der Ring aus magnetisch leitendem Metallpulverwerkstoff besteht.3. Current-compensated toroidal choke according to claim 1, characterized in that the ring consists of magnetically conductive metal powder material. 4. Nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß der Ring geschlitzt ist, d.h. einen Luftspalt aufweist.4. According to claim 1 to 3, characterized in that the ring is slotted is, i.e. has an air gap. 5. Entstördrossel mit erhöhter Streuinduktivität dadurch gekennzeichnet, daß die Ringkerndrossel mit dem sie umgebenden Ring in einem Gehäuse mittels Kleben und/oder Vergießen zu einem handhabbaren Bauteil zusammengefügt ist.5. suppression choke with increased leakage inductance, characterized in that the toroidal choke with the ring surrounding it in a housing Gluing and / or casting is assembled into a manageable component.
DE19873717717 1987-05-26 1987-05-26 Current-compensated annular-core inductor having increased stray inductance Granted DE3717717A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873717717 DE3717717A1 (en) 1987-05-26 1987-05-26 Current-compensated annular-core inductor having increased stray inductance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873717717 DE3717717A1 (en) 1987-05-26 1987-05-26 Current-compensated annular-core inductor having increased stray inductance

Publications (2)

Publication Number Publication Date
DE3717717A1 true DE3717717A1 (en) 1988-12-29
DE3717717C2 DE3717717C2 (en) 1992-10-08

Family

ID=6328449

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873717717 Granted DE3717717A1 (en) 1987-05-26 1987-05-26 Current-compensated annular-core inductor having increased stray inductance

Country Status (1)

Country Link
DE (1) DE3717717A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311126C2 (en) * 1993-04-05 1998-03-12 Siemens Matsushita Components Current-compensated multiple choke in a compact design
DE4311125B4 (en) * 1993-04-05 2004-10-21 Epcos Ag EMC filters for systems, systems and shielded rooms
DE102008031296A1 (en) * 2008-07-02 2009-08-20 Siemens Aktiengesellschaft Inductor device for e.g. output-sinusoidal filter of frequency converter, has three coils arranged on core from magnetic material, and another core arranged above three coils and forming single inductor acting as longitudinal inductance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962679A (en) * 1955-07-25 1960-11-29 Gen Electric Coaxial core inductive structures
DE3340494A1 (en) * 1983-11-09 1985-05-15 Vogt Gmbh & Co Kg, 8391 Erlau Current-compensated annular core choke - incorporates magnetic by=pass of ferrite material inside core with air gap to increase stray inductance
DE3445879A1 (en) * 1983-11-09 1986-06-19 Vogt electronic AG, 8391 Erlau Current-compensated annular-core inductor having an increased leakage inductance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962679A (en) * 1955-07-25 1960-11-29 Gen Electric Coaxial core inductive structures
DE3340494A1 (en) * 1983-11-09 1985-05-15 Vogt Gmbh & Co Kg, 8391 Erlau Current-compensated annular core choke - incorporates magnetic by=pass of ferrite material inside core with air gap to increase stray inductance
DE3445879A1 (en) * 1983-11-09 1986-06-19 Vogt electronic AG, 8391 Erlau Current-compensated annular-core inductor having an increased leakage inductance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GOESZL, Gottfried: Stromkompensierte SIFERIT-Drosseln zur Funk-Entstörung. In: Siemens-Bauteile-Informationen 8 (1970) Sonderheft Funk- Entstörung, S.6-8 *

Also Published As

Publication number Publication date
DE3717717C2 (en) 1992-10-08

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D2 Grant after examination
8364 No opposition during term of opposition
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