DE3433973A1 - Use of a highly saturable ferrite having a low permeability - Google Patents

Use of a highly saturable ferrite having a low permeability

Info

Publication number
DE3433973A1
DE3433973A1 DE19843433973 DE3433973A DE3433973A1 DE 3433973 A1 DE3433973 A1 DE 3433973A1 DE 19843433973 DE19843433973 DE 19843433973 DE 3433973 A DE3433973 A DE 3433973A DE 3433973 A1 DE3433973 A1 DE 3433973A1
Authority
DE
Germany
Prior art keywords
ferrite
low permeability
cores
air gap
highly saturable
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
DE19843433973
Other languages
German (de)
Inventor
Valentin Dipl.-Ing. 8391 Erlau Tanach
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
Priority claimed from DE19843424017 external-priority patent/DE3424017A1/en
Application filed by Vogt Electronic AG filed Critical Vogt Electronic AG
Priority to DE19843433973 priority Critical patent/DE3433973A1/en
Publication of DE3433973A1 publication Critical patent/DE3433973A1/en
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
    • H01F38/023—Adaptations of transformers or inductances for specific applications or functions for non-linear operation of inductances

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Dispersion Chemistry (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

A ferrite material is described which allows coils and transformers having ferrite cores to be produced using it, which no longer require an air gap despite DC premagnetisation. This applies to both E-cores and to U-cores, but especially also to annular cores in the case of which the production of a defined air gap comes up against severe production difficulties.

Description

Verwendung eines hochaussteuerbaren Ferrits mit niedriger PermeabilitätUse of a highly controllable ferrite with low permeability

(Zusatz zur Patentanmeldung 34 24 017.9 vom 29.6.1984) Mit dem Patent (PA)34 24 017.9 wird ein Ferritmaterial geschützt, welches erlaubt, damit Spulen und Transformatoren mit Ferritkernen herzustellen, die trotz hoher Gleichstromvormagnetisierung keinen Luftspalt mehr benötigen.(Addition to patent application 34 24 017.9 of June 29, 1984) With the patent (PA) 34 24 017.9 a ferrite material is protected, which allows coils to be used and to manufacture transformers with ferrite cores, which despite high DC bias no longer need an air gap.

Dies gilt sowohl für E- als auch U-Kerne, insbesondere aber auch für Ringkerne, bei denen die Erzeugung eines definierten Luftspalts auf starke fertigungstechnische Schwierigkeiten stößt.This applies to both E and U cores, but also especially for Toroidal cores in which the creation of a defined air gap is based on strong manufacturing engineering Encounters difficulties.

Der weitere Vorteil, keinen Luftspalt mehr zu benötigen, liegt auch darin, daß das im Luftspalt entstehende magnetische Streufeld, das Antenneneigenschaften (Sendereffekt) aufweist, entfällt, wobei auch die Nachteile vermieden werden, die durch die Lage des Luftspalts innerhalb der Spule entstehen (zusätzliche Verluste durch Wirbelströme an den Kupferwicklungen).The further advantage of no longer needing an air gap is also there in that the stray magnetic field created in the air gap, the antenna properties (Sender effect) does not apply, whereby the disadvantages are also avoided caused by the position of the air gap within the coil (additional losses due to eddy currents on the copper windings).

Praktische Versuche haben ergeben, daß die z.B. zur Zeit verwendeten hochpermeablen E-Kerne (mit Luftspalt) ohne weiteres durch Kerne des neuen Materials nach der PA 34 24 017.9 ersetzt werden können. Darüberhinaus dürfte noch eine weitergehende Optimierung des gesamten Transformators möglich sein, insbesondere, wenn man auf die Ringkernform übergeht, weil bei dieser Bauart die für die Netztrennung vorgeschriebenen Luftkriechstrecken entfallen können dadurch, daß die Primärwicklung komplett durch Umwickeln oder Umspritzen mit Kunststoff diese Kriechstrecken entfallen läßt, die beim herkömmlichen Transformator z.B. geschachtelte Spulenkörper undloder Abstände in entsprechendem Ausmaß der Wicklung vom Flansch des Spulenkörpers erfordern.Practical tests have shown that those currently used, for example highly permeable E-cores (with air gap) easily through cores of the new material can be replaced according to PA 34 24 017.9. In addition, there is likely to be a more far-reaching one Optimization of the entire transformer may be possible, especially when one is on the toroidal shape passes over, because with this type of construction the ones prescribed for the network separation Air creepage distances can be omitted because the primary winding is completely through Wrapping or injection molding with plastic these creepage distances can be omitted with conventional transformers e.g. nested bobbins and / or spaces require a corresponding amount of winding from the flange of the bobbin.

Auch für Speicherdrosseln eignet sich das Material nach der PA 34 24 017.9 deswegen hervorragend, weil die Magnetisierungskurve nicht linear ist. Diese Nichtlinearität ist dann erforderlich, wenn die Speicherdrosseln über einen großen Strombereich eingesetzt werden.The material according to PA 34 is also suitable for storage chokes 24 017.9 is excellent because the magnetization curve is not linear. This non-linearity is required if the storage chokes have a large current range can be used.

Weitere Anwendungsgebiete des neuartigen Materials sind Störschutzdrosseln (im Autoradio), Obertrager, Transduktoren, Brückenspulen, Treibertrafos, also vorzugsweise in Induktivitäten, deren Wechselstrom einen überlagerten Gleichstrom aufweist.Other areas of application for the new material are interference suppression chokes (in the car radio), upper carriers, transducers, bridge coils, driver transformers, so preferably in inductors, the alternating current of which has a superimposed direct current.

Claims (1)

Betr.: Zusatz zur Patentanmeldung 34 24 017.9 vom 29.6.1984 (Hochaussteuerbares Ferrit niedriger Permeabilität) Verwendung eines hochaussteuerbaren Ferrits mit niedriger Permeabilität Patentansprüche verwendung des hochaussteuerbaren Ferrits nach PA 34 24 017.9 in beliebiger (E-, U-, Schalen-, X-, RM- und Ringkern-)Form dadurch gekennzeichnet, daß es für Sperrwandler in Schaltnetzteilen eingesetzt wird, 2) Verwendung nach Anspruch 1) dadurch gekennzeichnet, daß es für Speicherdrosseln, Entstördrosseln, Transduktoren, Treibertrafos eingesetzt wird, 3) Verwendung nach Anspruch 1) dadurch gekennzeichnet, daß es für Induktiei täte jeglicher Art, bei denen der Wechselstrom mit Gleichstrom überlagert ist, eingesetzt wird.Re: addendum to patent application 34 24 017.9 dated June 29, 1984 (high modulation Ferrite with low permeability) Use of a highly controllable ferrite with low permeability use of the highly controllable ferrite according to PA 34 24 017.9 in any shape (E, U, shell, X, RM and toroidal core) characterized in that it is used for flyback converters in switched-mode power supplies, 2) Use according to claim 1), characterized in that it is for storage chokes, Suppression chokes, transducers, driver transformers are used, 3) use after Claim 1) characterized in that it would do for Induktiei of any kind which the alternating current is superimposed with direct current is used.
DE19843433973 1984-06-29 1984-09-15 Use of a highly saturable ferrite having a low permeability Granted DE3433973A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843433973 DE3433973A1 (en) 1984-06-29 1984-09-15 Use of a highly saturable ferrite having a low permeability

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843424017 DE3424017A1 (en) 1984-06-29 1984-06-29 Ferrite having a high saturation capability and low permeability
DE19843433973 DE3433973A1 (en) 1984-06-29 1984-09-15 Use of a highly saturable ferrite having a low permeability

Publications (1)

Publication Number Publication Date
DE3433973A1 true DE3433973A1 (en) 1986-03-20

Family

ID=25822504

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843433973 Granted DE3433973A1 (en) 1984-06-29 1984-09-15 Use of a highly saturable ferrite having a low permeability

Country Status (1)

Country Link
DE (1) DE3433973A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460760A1 (en) * 1990-06-08 1991-12-11 Koninklijke Philips Electronics N.V. Sintered transformer core of MnZn-ferrite and a transformer comprising such a core
WO1995003617A1 (en) * 1993-07-26 1995-02-02 Siemens Nixdorf Planar transducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011331A1 (en) * 1969-03-10 1971-03-04 Isergina E Ferritic materials for high frequencies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011331A1 (en) * 1969-03-10 1971-03-04 Isergina E Ferritic materials for high frequencies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460760A1 (en) * 1990-06-08 1991-12-11 Koninklijke Philips Electronics N.V. Sintered transformer core of MnZn-ferrite and a transformer comprising such a core
WO1995003617A1 (en) * 1993-07-26 1995-02-02 Siemens Nixdorf Planar transducer
US5726618A (en) * 1993-07-26 1998-03-10 Siemens Nixdorf Informationssysteme Aktiengesellschaft Planar transductor

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