EP0794538A1 - Noyau toroidal pour inductance, en particulier pour la suppression de parasites radiophoniques de circuits semi-conducteurs à commande par coupe de phase - Google Patents

Noyau toroidal pour inductance, en particulier pour la suppression de parasites radiophoniques de circuits semi-conducteurs à commande par coupe de phase Download PDF

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Publication number
EP0794538A1
EP0794538A1 EP97102148A EP97102148A EP0794538A1 EP 0794538 A1 EP0794538 A1 EP 0794538A1 EP 97102148 A EP97102148 A EP 97102148A EP 97102148 A EP97102148 A EP 97102148A EP 0794538 A1 EP0794538 A1 EP 0794538A1
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EP
European Patent Office
Prior art keywords
trough
toroidal
cover
amorphous
toroidal core
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.)
Withdrawn
Application number
EP97102148A
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German (de)
English (en)
Inventor
Hans-Joachim Pöss
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP0794538A1 publication Critical patent/EP0794538A1/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • 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

Definitions

  • a toroidal choke that meets these requirements is described for example in DE 18 04 835 C3.
  • the first of these materials having a relatively low permeability with high saturation induction and the second material having a medium permeability.
  • amorphous powder or nanocrystalline powder has also been used. This is evident from EP 302 355 A1. Despite the significantly higher permeability of the amorphous material and in particular of the nanocrystalline material, a powder core will also have a lower permeability here compared to solid cores even from crystalline material because of the binder used.
  • the object of the present invention is to provide a core for such a ring core choke which is simple and inexpensive to produce and which can be produced in a very compact size, depending on the power, by utilizing the high permeability of amorphous or nanocrystalline alloys.
  • the invention thus relates to a toroidal core for a choke, in particular for radio interference suppression of semiconductor circuits using the phase gating method, which consists of two soft magnetic materials of different permeability and saturation induction.
  • one of the materials consists of a soft magnetic, crystalline material and that an annular core-shaped trough is formed from this material and that the other material consists of amorphous and / or nanocrystalline particles which as powder or flakes are inside the toroidal trough.
  • the trough made of crystalline soft magnetic material can be made from any soft magnetic alloy. However, pure iron is advantageously used. Shredded tapes made of amorphous or nanocrystalline material can be used as powder or flakes. But it is also possible that the resulting in the production of the tapes and for tapes z. B. because of brittleness, poor dimensional accuracy, etc. to use unusable material that would otherwise have to be melted down as scrap.
  • a cover which is also made of soft magnetic material or plastic, serves to close the trough, so that the nanocrystalline particles are enclosed on all sides and do not require any compaction. Nevertheless, it is possible to improve the filling factor by pressing in the particles or to achieve additional noise insulation by adding a binder to the trough.
  • FIG. 1 An exemplary embodiment is shown in cross section in FIG. 1 and in plan view in FIG. 2.
  • Amorphous and / or nanocrystalline particles 3 are located in an annular core-shaped trough 1, which can be covered by a cover 2, which largely fill the interior of the trough 1.
  • the trough 1 with the particles 3 therein made of nanocrystalline or amorphous material can be provided with insulation in the usual way and serve as a ring core for a throttle.
  • the structure according to the invention is particularly advantageous for radio interference suppression chokes, since the high permeability of the particles of amorphous or nanocrystalline material with small dimensions ensure high inductance and since the eddy currents which form in the trough 1 contribute to damping the current. For this reason, the core is especially for chokes suitable, which are used for radio interference suppression of semiconductor circuits, which work according to the phase control method and cause harmonics in the operating current.
  • FIG. 2 shows a plan view of the ring core shown in cross section in FIG. 1, with the trough 1 without a lid and the particles 3 located inside the trough.
  • the trough 1 can consist entirely or only partially of soft magnetic material, depending on what level of eddy currents is desired for the respective application.
  • the eddy currents that are formed can also be adapted to the respective requirements by selecting the wall thickness of the trough.
EP97102148A 1996-03-07 1997-02-11 Noyau toroidal pour inductance, en particulier pour la suppression de parasites radiophoniques de circuits semi-conducteurs à commande par coupe de phase Withdrawn EP0794538A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608890 1996-03-07
DE19608890 1996-03-07

Publications (1)

Publication Number Publication Date
EP0794538A1 true EP0794538A1 (fr) 1997-09-10

Family

ID=7787546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102148A Withdrawn EP0794538A1 (fr) 1996-03-07 1997-02-11 Noyau toroidal pour inductance, en particulier pour la suppression de parasites radiophoniques de circuits semi-conducteurs à commande par coupe de phase

Country Status (3)

Country Link
US (1) US5751207A (fr)
EP (1) EP0794538A1 (fr)
JP (1) JPH09246049A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091141A1 (fr) * 2000-05-19 2001-11-29 Vacuumschmelze Gmbh & Co. Kg Composant inductif et procede permettant de le produire
DE102006032520A1 (de) * 2006-07-12 2008-01-17 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von Magnetkernen, Magnetkern und induktives Bauelement mit einem Magnetkern
US8287664B2 (en) 2006-07-12 2012-10-16 Vacuumschmelze Gmbh & Co. Kg Method for the production of magnet cores, magnet core and inductive component with a magnet core
US8298352B2 (en) 2007-07-24 2012-10-30 Vacuumschmelze Gmbh & Co. Kg Method for the production of magnet cores, magnet core and inductive component with a magnet core
US8372218B2 (en) 2006-06-19 2013-02-12 Vacuumschmelze Gmbh & Co. Kg Magnet core and method for its production

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19848827A1 (de) 1998-10-22 2000-05-04 Vacuumschmelze Gmbh Vorrichtung zur Dämpfung von Störspannungen
US7541909B2 (en) 2002-02-08 2009-06-02 Metglas, Inc. Filter circuit having an Fe-based core
TW200419600A (en) * 2002-12-06 2004-10-01 Toko Inc Complex magnetic material, and core and magnetic element using the complex magnetic material
CN100458988C (zh) * 2004-12-15 2009-02-04 台达电子工业股份有限公司 扼流线圈及其内埋型铁芯
US20070257759A1 (en) * 2005-11-04 2007-11-08 Delta Electronics, Inc. Noise filter and manufacturing method thereof
US8610533B2 (en) 2011-03-31 2013-12-17 Bose Corporation Power converter using soft composite magnetic structure
DE102015200666A1 (de) 2015-01-16 2016-08-18 Vacuumschmelze Gmbh & Co. Kg Magnetkern, Verfahren zur Herstellung eines solchen Magnetkerns und Verfahren zum Herstellen einer elektrischen oder elektronischen Baugruppe mit einem solchen Magnetkern
CN106158225B (zh) * 2016-08-31 2018-09-11 广东美的制冷设备有限公司 高低通组合式滤波器磁芯、电器元件及电器设备
JP6881379B2 (ja) * 2018-03-30 2021-06-02 株式会社豊田自動織機 車載用電動圧縮機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7726882U1 (de) * 1977-08-30 1977-12-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Umhuellung fuer ringfoermige kerne von drosselspulen
DE2735407A1 (de) * 1976-08-09 1978-02-16 Nippon Kinzoku Co Ltd Drosselspule
DE2736963A1 (de) * 1977-08-17 1979-02-22 Hartmann Goetz Udo Funkentstoerdrossel und verfahren zu ihrer herstellung
US4197146A (en) * 1978-10-24 1980-04-08 General Electric Company Molded amorphous metal electrical magnetic components
JPS6151808A (ja) * 1984-08-20 1986-03-14 Fujitsu Ltd リング状複合磁性コアの構造
DE4306128A1 (de) * 1993-02-27 1994-09-01 Vacuumschmelze Gmbh IDSN-Übertrager mit einem zusammengesetzten Magnetkern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809042A (en) * 1926-11-30 1931-06-09 Bell Telephone Labor Inc Magnet core
US2467101A (en) * 1941-03-08 1949-04-12 Western Electric Co Magnetic core
DE2058509C3 (de) * 1970-11-27 1975-07-03 Siemens Ag Funkentstördrossel gegen impulsartige Störspannungen
JPS5591810A (en) * 1978-12-29 1980-07-11 Mitsubishi Electric Corp Zero phase current transformer
US4789849A (en) * 1985-12-04 1988-12-06 General Electric Company Amorphous metal transformer core and coil assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735407A1 (de) * 1976-08-09 1978-02-16 Nippon Kinzoku Co Ltd Drosselspule
DE2736963A1 (de) * 1977-08-17 1979-02-22 Hartmann Goetz Udo Funkentstoerdrossel und verfahren zu ihrer herstellung
DE7726882U1 (de) * 1977-08-30 1977-12-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Umhuellung fuer ringfoermige kerne von drosselspulen
US4197146A (en) * 1978-10-24 1980-04-08 General Electric Company Molded amorphous metal electrical magnetic components
JPS6151808A (ja) * 1984-08-20 1986-03-14 Fujitsu Ltd リング状複合磁性コアの構造
DE4306128A1 (de) * 1993-02-27 1994-09-01 Vacuumschmelze Gmbh IDSN-Übertrager mit einem zusammengesetzten Magnetkern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 213 (E - 422) 25 July 1986 (1986-07-25) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091141A1 (fr) * 2000-05-19 2001-11-29 Vacuumschmelze Gmbh & Co. Kg Composant inductif et procede permettant de le produire
US7265651B2 (en) 2000-05-19 2007-09-04 Vacuumschmelze Gmbh & Co. Kg Inductive component and method for the production thereof
US8327524B2 (en) 2000-05-19 2012-12-11 Vacuumscmelze Gmbh & Co. Kg Inductive component and method for the production thereof
US8372218B2 (en) 2006-06-19 2013-02-12 Vacuumschmelze Gmbh & Co. Kg Magnet core and method for its production
DE102006032520A1 (de) * 2006-07-12 2008-01-17 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von Magnetkernen, Magnetkern und induktives Bauelement mit einem Magnetkern
DE102006032520B4 (de) * 2006-07-12 2008-04-10 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung von Magnetkernen, Magnetkern und induktives Bauelement mit einem Magnetkern
US8287664B2 (en) 2006-07-12 2012-10-16 Vacuumschmelze Gmbh & Co. Kg Method for the production of magnet cores, magnet core and inductive component with a magnet core
US8298352B2 (en) 2007-07-24 2012-10-30 Vacuumschmelze Gmbh & Co. Kg Method for the production of magnet cores, magnet core and inductive component with a magnet core

Also Published As

Publication number Publication date
US5751207A (en) 1998-05-12
JPH09246049A (ja) 1997-09-19

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