DE1003293B - Pot core for coils in communications technology, especially high frequency technology - Google Patents
Pot core for coils in communications technology, especially high frequency technologyInfo
- Publication number
- DE1003293B DE1003293B DES29053A DES0029053A DE1003293B DE 1003293 B DE1003293 B DE 1003293B DE S29053 A DES29053 A DE S29053A DE S0029053 A DES0029053 A DE S0029053A DE 1003293 B DE1003293 B DE 1003293B
- Authority
- DE
- Germany
- Prior art keywords
- pot core
- section
- cross
- winding
- core according
- 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
Links
- 238000005516 engineering process Methods 0.000 title claims description 6
- 238000004804 winding Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 2
- 239000011162 core material Substances 0.000 claims 11
- 230000004907 flux Effects 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Description
Schalenkern für Spulen der Nachrichtentechnik, insbesondere der Hochfrequenztechnik Die Erfindung befaßt sich mit einem Schalenkern für Spulen der Nachrichtentechnik, insbesondere der Hochfrequenztechnik, in dessen Mittelbutzen ein Luftspalt angeordnet ist.Pot core for coils used in communications technology, in particular high frequency technology The invention relates to a pot core for coils in communications engineering, in particular in high-frequency technology, in the middle of which an air gap is arranged is.
Zur Verringerung der Hystereseverluste in einem magnetischen Kern ist es bekannt, den Kern möglichst an allen Stellen querschnittsgleich zu gestalten. Der Erfindung liegen deshalb Schalenkerne zugrunde, bei denen das Verhältnis vom Querschnitt des Innenzylinders zum Querschnitt des Außenzylinders wesentlich größer als 0,5 ist.To reduce the hysteresis losses in a magnetic core it is known to design the core with the same cross-section as possible at all points. The invention is therefore based on shell cores in which the ratio of The cross section of the inner cylinder is much larger than the cross section of the outer cylinder than 0.5.
Es ist bekannt, daß bei einem Schalenkern mit im Innenbutzen angeordneten Luftspalt an diesem Luftspalt eine magnetische Streuung auftritt. Ein Teil des Flusses tritt erst weiter nach dem Deckel zu wieder in den Butzen ein. Es treten also im Mittelbutzen veränderte Flußverhältnisse auf.It is known that in a pot core with arranged in the inner slug Air gap at this air gap a magnetic scattering occurs. Part of the river only re-enters the slug after the lid is closed. So it occurs in the Mittelbutzen changed river conditions.
Dies ist im Hinblick auf die geforderten geringen Hystereseverluste aber nachteilig und soll vermieden werden.This is in view of the required low hysteresis losses but disadvantageous and should be avoided.
Erfindungsgemäß wird deshalb vorgeschlagen, daß der 11ittelbutzen entsprechend der Größe des Streufeldes zum Luftspalt hin abnehmenden Querschnitt besitzt. Dies kann entweder dadurch erreicht werden, daß man die Innenbutzenhälfte kegelstumpfförmig ausbildet, oder, wenn der Innenbutzen ein Zentrierloch aufweist, daß man dieses Loch entsprechend konisch gestaltet.According to the invention it is therefore proposed that the 11ittelbutzen according to the size of the stray field towards the air gap decreasing cross-section owns. This can either be achieved by removing the inner slug half frustoconical, or, if the inner slug has a centering hole, that this hole is designed correspondingly conical.
Es ist an sich bekannt, eine Wicklung in einer Aussparung eines Kernes anzuordnen, wobei zur weitgehenden Verhinderung des Anliegens der Wicklung an den Flächen der Aussparung diese so ausgebildet ist, daß die rechteckige Wicklung nur durch ihre vier Kanten in der Aussparung getragen wird. Bei dieser bekannten Anordnung ergeben sich zwar auch Kernteile mit abnehmendem Querschnitt, jedoch weisen diese Teile keine Luftspalte auf, so daß ein Streufeld bei der bekannten Anordnung überhaupt nicht auftritt.It is known per se, a winding in a recess of a core to be arranged, in order to largely prevent the winding from resting against the Areas of the recess this is designed so that the rectangular winding only is supported by its four edges in the recess. In this known arrangement Although there are also core parts with a decreasing cross-section, they have Do not divide any air gaps, so that a stray field in the known arrangement at all does not occur.
Ausführungsformen der Erfindung sind in der Zeichnung dargestellt. In Fig. 1 sind die Mittelbutzenteile a und b kegelstumpfförmig ausgeführt, während in Fig. 2 das Mittelloch konisch gestaltet ist. Gleichzeitig ist in den Fig. 1 und 2 weiter angegeben, die Kanten. insbesondere bei c angedeutet, zu runden, um überflüssiges Material einzusparen bzw. die Induktion längs der Flußrichtung auf sämtlichen Kernteilen gleich groß zu gestalten. In den gezeigten Beispielen der Fig. 1. und 2 sind weiterhin die Deckelteile der Schalenkernhälften mit abnehmender Stärke versehen. Hierdurch entsteht für die Wicklungsträger ein trapezförmiger Wickelquerschnitt. Dies verursacht üblicherweise keine Schwierigkeiten für die Aufbringung der Wicklung. Lediglich in bestimmten Fällen, beispielsweise bei Viererspulen für Pupinzwecke, kann durch die verschiedene Wicklungszahl der einzelnen Lagen die entstehende Unsymmetrie unzulässig groß werden. Man kann in solchen Fällen einen Wickelkörper mit rechteckigem Wicklungsquerschnitt verwenden, wobei die entstehenden Hohlräume in zweckmäßiger Weise zum Herausführen der Wicklungsenden benutzt werden können. Dies hat besondere Bedeutung für Spulen mit Anzapfungen. Der Wickelkörper kann dabei zur Vergrößerung seiner Stabilität an den Stirnflächen Rippen aufweisen.Embodiments of the invention are shown in the drawing. In Fig. 1, the central bump parts a and b are frustoconical, while in Fig. 2 the central hole is conical. At the same time, FIGS. 1 and 2 further indicate the edges. especially indicated at c, to round in order to save superfluous material or to make the induction along the flow direction on all core parts the same. In the examples shown in FIGS. 1 and 2, the cover parts of the shell core halves are also provided with decreasing thickness. This creates a trapezoidal winding cross-section for the winding carriers. This usually does not cause any difficulties for the application of the winding. Only in certain cases, for example with four-coils for Pupin purposes, can the resulting asymmetry become impermissibly large due to the different number of windings in the individual layers. In such cases, a winding body with a rectangular winding cross-section can be used, and the resulting cavities can be used in an expedient manner to lead out the winding ends. This is of particular importance for coils with taps. The winding body can have ribs on the end faces to increase its stability.
Ein Spulenkörper mit trapezförmigem Wicklungsquerschnitt ist in Fig. 3 und ein solcher mit rechteckigem Querschnitt und Versteifungsrippen in Fig.4 wiedergegeben.A coil body with a trapezoidal winding cross-section is shown in Fig. 3 and one with a rectangular cross-section and stiffening ribs shown in FIG.
Es ist bei der erfindungsgemäßen Anordnung gleichgültig, ob die Luftspalte ganz oder zum Teil mit unmagnetischen oder magnetischen niederpermeablen Massen ausgefüllt sind, ja es ist sogar möglich, den Mittelbutzen des Schalenkernes aus einem Werkstoff geringerer Permeabilität zu wählen als den Außenteil. In diesem Fall kann das Querschnittsverhältnis vom Innen- zum Außenkern sogar größer als 1, beispielsweise 1,5 gemacht werden.It is unimportant in the arrangement according to the invention whether the air gaps wholly or partly with non-magnetic or magnetic low-permeability materials are filled out, yes it is even possible to remove the central portion of the shell core to choose a material with a lower permeability than the outer part. In this Case, the aspect ratio of the inner to the outer core can even be greater than 1, for example 1.5 can be made.
Die Erfindung ist besonders zweckmäßig bei Schalenkernen anzuwenden, deren Werkstoff aus hochpermeablen und verlustarmen Stoffen, wie z. B. Ferriten od. dgl., besteht. Besondere Bedeutung haben die beschriebenen Schalenkerne für Pupin- und Trägerfrequenzspulen.The invention is particularly useful for pot cores, whose material is made of highly permeable and low-loss materials, such as. B. Ferrites or the like. The pot cores described are of particular importance for Pupin and carrier frequency coils.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES29053A DE1003293B (en) | 1952-06-25 | 1952-06-25 | Pot core for coils in communications technology, especially high frequency technology |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES29053A DE1003293B (en) | 1952-06-25 | 1952-06-25 | Pot core for coils in communications technology, especially high frequency technology |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1003293B true DE1003293B (en) | 1957-02-28 |
Family
ID=7479646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES29053A Pending DE1003293B (en) | 1952-06-25 | 1952-06-25 | Pot core for coils in communications technology, especially high frequency technology |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1003293B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1098610B (en) * | 1956-05-17 | 1961-02-02 | Cie Ind Des Telephones | Toroidal coil |
WO2001020622A1 (en) * | 1999-09-16 | 2001-03-22 | Philippe Viarouge | Power transformers and power inductors for low frequency applications using isotropic composite magnetic materials with high power to weight ratio |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB402483A (en) * | 1932-06-10 | 1933-12-07 | Alan Dower Blumlein | Improvements in electric coils |
CH172858A (en) * | 1932-11-28 | 1934-10-31 | Vogt Hans | High frequency coil. |
GB534567A (en) * | 1940-03-14 | 1941-03-10 | Automatic Telephone & Elect | Improvements in or relating to inductance coils for electric wave filters or the like |
FR944911A (en) * | 1943-12-15 | 1949-04-20 | Improvements to magnetic cores used as supports for windings in oscillating circuits |
-
1952
- 1952-06-25 DE DES29053A patent/DE1003293B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB402483A (en) * | 1932-06-10 | 1933-12-07 | Alan Dower Blumlein | Improvements in electric coils |
CH172858A (en) * | 1932-11-28 | 1934-10-31 | Vogt Hans | High frequency coil. |
GB534567A (en) * | 1940-03-14 | 1941-03-10 | Automatic Telephone & Elect | Improvements in or relating to inductance coils for electric wave filters or the like |
FR944911A (en) * | 1943-12-15 | 1949-04-20 | Improvements to magnetic cores used as supports for windings in oscillating circuits |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1098610B (en) * | 1956-05-17 | 1961-02-02 | Cie Ind Des Telephones | Toroidal coil |
WO2001020622A1 (en) * | 1999-09-16 | 2001-03-22 | Philippe Viarouge | Power transformers and power inductors for low frequency applications using isotropic composite magnetic materials with high power to weight ratio |
US6879237B1 (en) | 1999-09-16 | 2005-04-12 | Electrotechnologies Selem Inc. | Power transformers and power inductors for low-frequency applications using isotropic material with high power-to-weight ratio |
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