DE3402278A1 - Trimmable E-core for inductors - Google Patents
Trimmable E-core for inductorsInfo
- Publication number
- DE3402278A1 DE3402278A1 DE19843402278 DE3402278A DE3402278A1 DE 3402278 A1 DE3402278 A1 DE 3402278A1 DE 19843402278 DE19843402278 DE 19843402278 DE 3402278 A DE3402278 A DE 3402278A DE 3402278 A1 DE3402278 A1 DE 3402278A1
- Authority
- DE
- Germany
- Prior art keywords
- core
- air gap
- inductors
- core halves
- trimmable
- 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
Links
Classifications
-
- 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
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
Landscapes
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Abgleichbarer E-Kern für Induktivitäten Adjustable E-core for inductors
Für Induktivitäten, die aufgrund ihrer Anwendung einen sehr engtolerierten Induktivitätswert aufweisen müssen, wurden bisher ausschließlich Schalen-oder RM- oder X-Kerne mit Luftspalt und einer Abgleichvorrichtung in Form eines den Luftspalt überbrückenden magnetisch leitenden Teils z.B. eines Gewindekerns, verwendet. Eine solche Konstruktion ist teuer, da bekanntlich die genannten Kernluftspalten individuell geschliffen werden müssen.For inductors that have a very tight tolerance due to their application Must have inductance value, so far only shell or RM or X-cores with an air gap and a balancing device in the form of an air gap bridging magnetically conductive part, e.g. of a thread core. One Such a construction is expensive, since it is known that the core air gaps mentioned are individual need to be sanded.
Derartige Induktivitäten werden beispielsweise als Schwingdrosseln eingesetzt. Es war nun nach einer Lösung zu suchen, die es erlaubt, auch E-Kerne so auszugestalten, daß sich eine Abgleichmöglichkeit ergibt unter Einbezug der größeren Streuung der magnetischen fertigungs- und chargenbedingten Werte.Such inductances are used, for example, as oscillating chokes used. It was now necessary to look for a solution that would also allow E cores to be designed in such a way that there is a possibility of comparison, taking into account the larger ones Scatter of the magnetic production and batch-related values.
Es ist zunächst versucht worden, die Einstellung der Induktivität in engen Grenzen dadurch zu erhalten, daß der Luftspalt in den drei Schenkeln durch llechanische Annäherung eingestellt und der so eingestellte Luftspalt durch einen Kleber im Luftspalt fixiert wird.An attempt was first made to adjust the inductance to obtain within narrow limits that the air gap in the three legs through Ilechanic approximation is set and the air gap set in this way by a Glue is fixed in the air gap.
Durch diesen Prozess entstehen folgende Nachteile: 1) Beim Aushärten können Volumenänderungen des Klebers ggf. auch über lange Zeiten den Luftspalt und damit die Induktivität verändern.This process creates the following disadvantages: 1) During hardening changes in the volume of the adhesive, possibly even over long periods of time, can reduce the air gap and thus change the inductance.
2) Da der Luftspalt in den Außenschenkeln ebenfalls auftritt, sind undefinierbare magnetische Streufelder zu erwarten, die u.U. die umliegenden Bauelemente beeinflussen können.2) Since the air gap also occurs in the outer legs, are Indefinable magnetic stray fields are to be expected, which may affect the surrounding components can influence.
Die Ausgestaltung des erfindungsgemäßen E-Kerns erlaubt die Vermeidung der geschilderten Nachteile, ohne die sonstigen Vorteile der E-Kern-Konstruktion einzuschränken.The design of the E core according to the invention allows avoidance the disadvantages described, without the other advantages of the E-core construction to restrict.
Nachstehend wird das Prinzip erläutert: Abb. 1 verdeutlicht das Funktionsprinzip. Die äußeren Schenkel der beiden E-Kernhälften (1) und (2) sind abgeschrägt, während der Mittelschenkel einen vorgewählten Luftspalt (3) aufweist. Durch Verschiebung der E-Kernhälften (1) und (2) gegeneinander in der durch Pfeile (a) angedeuteten Richtung ändert sich naturgemäß der Luftspalt 3. Damit wird ein Abgleich der (nicht gezeichneten) Induktivität erreicht, ohne daß ein undefiniertes Streufeld nach außen auftritt. Durch diese Möglichkeit des Abgleiches entfällt auch das ansonsten notwendige Schleifen der Kontaktflächen an den Außenschenkeln der E-Kernhälften.The principle is explained below: Fig. 1 illustrates the functional principle. The outer legs of the two E-core halves (1) and (2) are bevelled while the middle leg has a preselected air gap (3). By shifting of the E core halves (1) and (2) against one another in the direction indicated by arrows (a) direction the air gap 3 changes naturally Adjustment of the (not shown) inductance achieved without an undefined Stray field occurs to the outside. This possibility of comparison is also omitted the otherwise necessary grinding of the contact surfaces on the outer legs of the E core halves.
In Abb. 2 wird ein zweites Funktionsprinzip beschrieben.A second functional principle is described in Fig. 2.
Die E-Kernhälften 4 und 5 weisen einen im Winkel (oil) angebrachten Luftspalt (6) auf. Durch Verschiebung der E-Kernhälften in Richtung (a) läßt sich der Luftspalt (6) einstellen, so daß hierdurch eine Abgleichmöglichkeit entsteht.The E-core halves 4 and 5 have an angle (oil) attached Air gap (6). By shifting the E-core halves in direction (a) you can adjust the air gap (6) so that this creates a possibility of adjustment.
- Leerseite -- blank page -
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843402278 DE3402278A1 (en) | 1984-01-24 | 1984-01-24 | Trimmable E-core for inductors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843402278 DE3402278A1 (en) | 1984-01-24 | 1984-01-24 | Trimmable E-core for inductors |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3402278A1 true DE3402278A1 (en) | 1985-08-01 |
DE3402278C2 DE3402278C2 (en) | 1992-05-27 |
Family
ID=6225728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843402278 Granted DE3402278A1 (en) | 1984-01-24 | 1984-01-24 | Trimmable E-core for inductors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3402278A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2591024A1 (en) * | 1985-12-04 | 1987-06-05 | Orega Electro Mecanique | MAGNETIC CIRCUIT WITH LOW MAGNETIC FIELD RAYS, ESPECIALLY FOR A HIGH VOLTAGE TRANSFORMER SUPPLYING A CATHODE TUBE |
EP0299443A2 (en) * | 1987-07-15 | 1989-01-18 | Nukem GmbH | Apparatus and process for non-destructive control of ferromagnetic bodies, with the help of magnetization |
EP0518421A1 (en) * | 1991-06-12 | 1992-12-16 | Koninklijke Philips Electronics N.V. | Inductive device |
EP1887586A1 (en) * | 2006-08-09 | 2008-02-13 | Magneti Marelli Holding S.p.A. | Ignition coil and assembly method thereof |
US8540948B2 (en) | 2010-12-23 | 2013-09-24 | Eppendorf Ag | Lidded container |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3008599A1 (en) * | 1980-03-06 | 1981-09-17 | Bruno 8550 Forchheim Waasner | Two piece core for choke held together by snap action - with air gap formed in yoke at point of snap fastening |
DE3008598A1 (en) * | 1980-03-06 | 1981-10-08 | Bruno 8550 Forchheim Waasner | Laminated magnetic core for low inductance choke coil - is divided into two parts including air gap and lacquered joint |
-
1984
- 1984-01-24 DE DE19843402278 patent/DE3402278A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3008599A1 (en) * | 1980-03-06 | 1981-09-17 | Bruno 8550 Forchheim Waasner | Two piece core for choke held together by snap action - with air gap formed in yoke at point of snap fastening |
DE3008598A1 (en) * | 1980-03-06 | 1981-10-08 | Bruno 8550 Forchheim Waasner | Laminated magnetic core for low inductance choke coil - is divided into two parts including air gap and lacquered joint |
Non-Patent Citations (1)
Title |
---|
Zinke, Seither "Widerstände, Kondensatoren, Spulen und ihre Werkstoff", Springer-Verlag Berlin 1982 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2591024A1 (en) * | 1985-12-04 | 1987-06-05 | Orega Electro Mecanique | MAGNETIC CIRCUIT WITH LOW MAGNETIC FIELD RAYS, ESPECIALLY FOR A HIGH VOLTAGE TRANSFORMER SUPPLYING A CATHODE TUBE |
EP0225830A1 (en) * | 1985-12-04 | 1987-06-16 | OREGA ELECTRONIQUE & MECANIQUE | Method for producing a magnetic circuit with a low magnetic-leakage field, in particular for a high-voltage transformer supplying a cathode ray tube |
WO1987003736A1 (en) * | 1985-12-04 | 1987-06-18 | Orega Electronique Et Mecanique | Magnetic circuit with low radiated magnetic field, particularly for a high voltage transformer supplying a cathode tube |
EP0299443A2 (en) * | 1987-07-15 | 1989-01-18 | Nukem GmbH | Apparatus and process for non-destructive control of ferromagnetic bodies, with the help of magnetization |
EP0299443A3 (en) * | 1987-07-15 | 1990-02-28 | Nukem GmbH | Apparatus and process for non-destructive control of ferromagnetic bodies, with the help of magnetization |
EP0518421A1 (en) * | 1991-06-12 | 1992-12-16 | Koninklijke Philips Electronics N.V. | Inductive device |
EP1887586A1 (en) * | 2006-08-09 | 2008-02-13 | Magneti Marelli Holding S.p.A. | Ignition coil and assembly method thereof |
US8540948B2 (en) | 2010-12-23 | 2013-09-24 | Eppendorf Ag | Lidded container |
Also Published As
Publication number | Publication date |
---|---|
DE3402278C2 (en) | 1992-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: VOGT ELECTRONIC AG, 8391 ERLAU, DE |
|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8330 | Complete disclaimer |