DE1613571A1 - Choke for radio interference suppression of thyristor circuits - Google Patents

Choke for radio interference suppression of thyristor circuits

Info

Publication number
DE1613571A1
DE1613571A1 DE19671613571 DE1613571A DE1613571A1 DE 1613571 A1 DE1613571 A1 DE 1613571A1 DE 19671613571 DE19671613571 DE 19671613571 DE 1613571 A DE1613571 A DE 1613571A DE 1613571 A1 DE1613571 A1 DE 1613571A1
Authority
DE
Germany
Prior art keywords
choke
interference suppression
radio interference
thyristor circuits
powder
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.)
Pending
Application number
DE19671613571
Other languages
German (de)
Other versions
DE1613571B2 (en
Inventor
Heinrich Brungsberg
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Publication of DE1613571A1 publication Critical patent/DE1613571A1/en
Publication of DE1613571B2 publication Critical patent/DE1613571B2/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

Drossel zur Funkentstörung von Thyristor-Schaltungen. Die Erfindung betrifft eine Drossel mitgrosser Induktivität und hoher Dämpfung zur Funkentstörung von Thyristor-Schaltungen, insbesondere fUr Helligkeitssteuergeräte. Drosseln bekannter Ausführungen besitzen üblicherweise einen Magnetkern, der massiv oder aus Blechen geschichtet ausgeführt ist, wie z.B. die Anordnung gemäss DBP 873 110 zeigt. Die hierbei auftretenden Brummgeräusche, im wesentlichen hervorgerufen durch Magnetostriktion., wirken störend, besonders bei Verwendung von Helligkeitsateuergeräten (DIMMERN) im Wohnbereich.Choke for radio interference suppression of thyristor circuits. The invention relates to a choke with high inductance and high attenuation for radio interference suppression of thyristor circuits, in particular for brightness control devices. Chokes of known designs usually have a magnetic core that is solid or made of sheet metal, as shown, for example, by the arrangement according to DBP 873 110 . The humming noises that occur here, mainly caused by magnetostriction., Have a disruptive effect, especially when using brightness control devices (DIMMERS) in living areas.

An die Erfindung wurde die Aufgabe gestellt, eine Drossel -mit den Eigenschaften einer Eisendrossel, d.h. grosser Induktivität und hoher Dämpfung,. besonders im Frequenzbereich unter 1 MHz, zu entwickeln, bei der jedoch die störenden Geräusche nicht auftreten.The object of the invention was to create a choke with the properties of an iron choke, ie high inductance and high damping. especially in the frequency range below 1 MHz, at which however the disturbing noises do not occur.

Xrfindungsgemänn wird dies dadurch erreicht, dass der Drosselkern aus ferromagnetischem Pulver, z.B. Eisen- oder Ferritpulver"und einem geringen Anteil Binder" Z.B. Epoxydharz,.. besteht. Das Gemisch wird unter hohem Druck in die gewünschte Form gepresst.According to the invention, this is achieved in that the throttle core consists of ferromagnetic powder, for example iron or ferrite powder, and a small proportion of binder, for example epoxy resin. The mixture is pressed into the desired shape under high pressure.

Nach diesem Verfahren hergestellte Kerne verursachen keine störenden Geräusche wie geschichtete Eisendrossein und sie besitzen gegenüber Sinterteilen aus Ferrit eine genügend hohe Dämpfung bei Frequenzen unter 1 MHz. Letztere resultiert aus dem flacheren Anstieg der Magnetisierungskennlinie, der eine schnelle Sättigung verhindert. Die einzelnen Pulverkörnchen haben durch den Binderanteil und einen geringeren Pressdruck, als er bei der Herstellung von Sinterteilen üblich ist, einen grösseren Abstand zueinander. Die günstigsten Resultate werden mit einem Pulver hoher Anfangspermeabilität und eine Einstellung von Binderanteil und Pressdruck erzielt, bei der die Permeabilitätswerte mit ansteigender Feldstärke nur flach abfallen.Cores produced according to this process do not cause any disturbing noises such as layered iron throttles and they have a sufficiently high attenuation at frequencies below 1 MHz compared to sintered parts made of ferrite. The latter results from the flatter rise in the magnetization characteristic, which prevents rapid saturation. The individual powder grains have a greater distance from one another due to the binder content and a lower pressure than is usual in the production of sintered parts. The most favorable results are achieved with a powder with a high initial permeability and an adjustment of the binder content and pressing pressure at which the permeability values drop only slightly with increasing field strength.

Claims (1)

Patentanspruch: Drossel mit grosser Induktivität und hoher Dämpfung, vorwiegend bei Frequenzen unter 1 Mz, tUr Thyristör-Schaltungen, insbesondere tUr Helligkeitsateuergepäte, dadurch Stkennzeichnet.. dass der Kern aus einem Gemisch von ferromagnetischem Pulver, z.B. Eisen- oder Verritpulver, und einem geringen Anteil Bindigr, z.B. Epoxydharz, besteht, welches in FoxWen gepresst wird.Claim: Choke with high inductance and high damping, mainly at frequencies below 1 Mz, for thyristor circuits, especially for brightness control devices, characterized in that the core consists of a mixture of ferromagnetic powder, e.g. iron or verite powder, and a small proportion Bindigr, e.g. epoxy resin, is made, which is pressed in FoxWen.
DE19671613571 1967-06-24 1967-06-24 REACTOR COIL FOR RADIO SUPPRESSION OF THYRISTOR CIRCUITS Pending DE1613571B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0093177 1967-06-24

Publications (2)

Publication Number Publication Date
DE1613571A1 true DE1613571A1 (en) 1970-08-13
DE1613571B2 DE1613571B2 (en) 1971-11-11

Family

ID=6986810

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671613571 Pending DE1613571B2 (en) 1967-06-24 1967-06-24 REACTOR COIL FOR RADIO SUPPRESSION OF THYRISTOR CIRCUITS

Country Status (1)

Country Link
DE (1) DE1613571B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343377B2 (en) * 1973-08-28 1977-07-07 Siemens AG, 1000 Berlin und 8000 München RADIANT ELIMINATOR
DE2505080B2 (en) * 1975-02-07 1979-04-26 Goetz-Udo 6391 Graevenwiesbach Hartmann Radio interference suppression choke and process for their manufacture

Also Published As

Publication number Publication date
DE1613571B2 (en) 1971-11-11

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