EP0940827B1 - Self-inductance component - Google Patents
Self-inductance component Download PDFInfo
- Publication number
- EP0940827B1 EP0940827B1 EP99200505A EP99200505A EP0940827B1 EP 0940827 B1 EP0940827 B1 EP 0940827B1 EP 99200505 A EP99200505 A EP 99200505A EP 99200505 A EP99200505 A EP 99200505A EP 0940827 B1 EP0940827 B1 EP 0940827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- self
- inductance component
- wound
- winding
- component
- 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.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 10
- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
Definitions
- the present invention relates to a self-inductance component comprising a winding wound on a rectilinear magnetic core.
- Such a component is used in television distribution systems by cable.
- a coil has a winding simple, wound on a magnetic core made up of a plurality of cylinders of ferrite placed in the extension of one another.
- FR-A-2 290 779 presents a self-inductance component comprising a coil winding on a core. The winding is partly wound in one direction and partly in the other.
- a cable television distribution system includes antennas, amplifiers, cables and distribution boxes; a self-inductance component placed in these distributors allows to pass fairly intense supply currents, direct or alternating currents to 50 Hz, so as to supply the amplifiers via cables, from of power supplies located in a building.
- the frequency range transiting in these systems being very extensive, it is difficult to obtain that it component has both a high impedance at the highest frequencies low (5 MHz) and an absence of resonances at the highest frequencies.
- a parasitic modulation phenomenon at 50 Hz may appear, due to periodic saturation of the magnetic core.
- An object of the invention is to obtain correct operation in a frequency range as wide as 5 MHz to 3000 MHz, the component being traversed by an alternating current at 50 Hz of at least 5 amperes.
- the said magnetic core consists of several rods of ferrite placed side by side as in a bundle.
- FIG. 1 represents a component according to the invention, seen in perspective.
- Figure 2 shows an example of the use of such a component.
- the component has a winding wound on a magnetic core straight consisting of several ferrite rods 1, 2, 3 placed side by side as in a bundle. Here they are three in number, and they are arranged with their axes equidistant from each other, forming an equilateral triangle.
- the winding is partly wound in one direction and partly in the other. he is made of part 4 between entry 6 and a midpoint 7, and part 5 between midpoint 7 and exit 8, these two parts being for example of equal lengths, possibly to the nearest revolution.
- part 4 the thread is wound in the direction indicated by arrow 9, and in part 5 the wire is wound in the opposite direction, indicated by arrow 10.
- the two parts are for example connected by solder in 7. At this point, the wire could also be bent to start again in the opposite direction.
- the distributor of Figure 2 is part for example of a network of television distribution not shown, it divides a signal on an input E, to send it to four outputs S1, S2, S3, 54. Upstream of input E is finds any electronic circuit 12 which requires power. In downstream of outputs S1, S2, S3, S4 are electronic circuits any 24, 25, 26, 27 which each require power.
- the module SP is a module known in itself which realizes the high signal distribution frequency. The supply current is supplied by an AL supply on the connection 30, and reaches circuits 12, 24, 25, 26, 27 via components respectively 22, 34, 35, 36, 37, each of the model described above and represented by figure 1.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Description
La présente invention concerne un composant à self-inductance comportant un enroulement bobiné sur un noyau magnétique rectiligne.The present invention relates to a self-inductance component comprising a winding wound on a rectilinear magnetic core.
Un tel composant est utilisé dans des systèmes de distribution de télévision par câble.Such a component is used in television distribution systems by cable.
Un composant selon le préambule ci-dessus est connu de la demande de brevet EP 0 642 142. Selon ce document, une bobine comporte un enroulement simple, bobiné sur un noyau magnétique constitué d'une pluralité de cylindres de ferrite placés dans le prolongement l'un de l'autre. FR-A-2 290 779 présente un composant à self-inductance comportant un enroulement bobine sur un noyeau. L'enroulement est bobiné en partie dans un sens et en partie dans l'autre.A component according to the above preamble is known from the application for Patent EP 0 642 142. According to this document, a coil has a winding simple, wound on a magnetic core made up of a plurality of cylinders of ferrite placed in the extension of one another. FR-A-2 290 779 presents a self-inductance component comprising a coil winding on a core. The winding is partly wound in one direction and partly in the other.
Un système de distribution de télévision par câble comprend des antennes, des amplificateurs, des câbles et des répartiteurs de distribution ; un composant à self-inductance placé dans ces répartiteurs permet de faire passer des courants d'alimentation assez intenses, courants continus ou alternatifs à 50 Hz, de façon à alimenter les amplificateurs via les câbles, à partir d'alimentations situées dans un bâtiment. La gamme de fréquences transitant dans ces systèmes étant très étendue, il est difficile d'obtenir que ce composant présente à la fois une impédance élevée aux fréquences les plus basses (5 Mhz) et une absence de résonances aux fréquences les plus élevées. En outre, lorsque le composant est parcouru par un courant alternatif important, un phénomène de modulation parasite à 50 Hz risque d'apparaítre, dû à une saturation périodique du noyau magnétique.A cable television distribution system includes antennas, amplifiers, cables and distribution boxes; a self-inductance component placed in these distributors allows to pass fairly intense supply currents, direct or alternating currents to 50 Hz, so as to supply the amplifiers via cables, from of power supplies located in a building. The frequency range transiting in these systems being very extensive, it is difficult to obtain that it component has both a high impedance at the highest frequencies low (5 MHz) and an absence of resonances at the highest frequencies. In addition, when the component is traversed by an alternating current important, a parasitic modulation phenomenon at 50 Hz may appear, due to periodic saturation of the magnetic core.
Un objet de l'invention est d'obtenir un fonctionnement correct dans une gamme de fréquences aussi étendue que 5 MHz à 3000 Mhz, le composant étant parcouru par un courant alternatif à 50 Hz d'au moins 5 ampères.An object of the invention is to obtain correct operation in a frequency range as wide as 5 MHz to 3000 MHz, the component being traversed by an alternating current at 50 Hz of at least 5 amperes.
A cet effet, le dit noyau magnétique est constitué de plusieurs bâtonnets de ferrite placés côte à côte comme dans un fagot.For this purpose, the said magnetic core consists of several rods of ferrite placed side by side as in a bundle.
Des modes particuliers de réalisation du composant apparaissent dans les
revendications dépendantes 2 à 6.Particular embodiments of the component appear in the
Ces aspects de l'invention ainsi que d'autres aspects plus détaillés apparaítront plus clairement grâce à la description suivante d'un mode de réalisation constituant un exemple non limitatif.These aspects of the invention as well as other more detailed aspects will appear more clearly from the following description of a mode of embodiment constituting a nonlimiting example.
La figure 1 représente un composant selon l'invention, vu en perspective.FIG. 1 represents a component according to the invention, seen in perspective.
La figure 2 représente un exemple d'utilisation d'un tel composant.Figure 2 shows an example of the use of such a component.
Le composant comporte un enroulement bobiné sur un noyau magnétique
rectiligne constitué de plusieurs bâtonnets de ferrite 1, 2, 3 placés côte à côte
comme dans un fagot. Ici ils sont au nombre de trois, et ils sont disposés avec
leurs axes équidistants l'un de l'autre, formant un triangle équilatéral.The component has a winding wound on a magnetic core
straight consisting of
L'enroulement est bobiné en partie dans un sens et en partie dans l'autre. Il
est fait d'une partie 4 entre l'entrée 6 et un point médian 7, et d'une partie 5
entre le point médian 7 et la sortie 8, ces deux parties étant par exemple de
longueurs égales, éventuellement à un tour près. Dans la partie 4 le fil est
bobiné dans le sens indiqué par la flèche 9, et dans la partie 5 le fil est bobiné
en sens inverse, indiqué par la flèche 10. Les deux parties sont par exemple
reliées par soudure en 7. En ce point, le fil pourrait aussi être plié pour repartir
dans la direction opposée.The winding is partly wound in one direction and partly in the other. he
is made of
On peut par exemple faire passer un courant de 6 ampères, à 50 Hz ou à 100 Hz, dans un composant constitué de trois barreaux de ferrite doux, du type dit "4B1", le bobinage étant fait de deux fois 11,5 tours jointifs de fil de 70/100, avec un diamètre de 4 à 5 mm. Les meilleurs résultats sont obtenus lorsque le fil est bobiné directement sur le fagot de bâtonnets de ferrite, c'est-à-dire sans mandrin support.We can for example pass a current of 6 amps, at 50 Hz or 100 Hz, in a component made up of three bars of soft ferrite, of the type called "4B1", the winding being made of two 11.5 contiguous turns of wire of 70/100, with a diameter of 4 to 5 mm. The best results are obtained when the wire is wound directly on the bundle of ferrite rods, i.e. without support mandrel.
Le répartiteur de la figure 2 fait partie par exemple d'un réseau de
distribution de télévision non représenté, il divise un signal sur une entrée E,
pour l'envoyer sur quatre sorties S1, S2, S3, 54. En amont de l'entrée E se
trouve un circuit électronique quelconque 12 qui nécessite une alimentation. En
aval des sorties S1, S2, S3, S4 se trouvent des circuits électroniques
quelconques 24, 25, 26, 27 qui nécessitent chacun une alimentation. Le module
SP est un module connu en soi qui réalise la répartition des signaux haute
fréquence. Le courant d'alimentation est fourni par une alimentation AL sur la
connexion 30, et parvient aux circuits 12, 24, 25, 26, 27 via des composants
respectivement 22, 34, 35, 36, 37, chacun étant du modèle décrit ci dessus et
représenté par la figure 1.The distributor of Figure 2 is part for example of a network of
television distribution not shown, it divides a signal on an input E,
to send it to four outputs S1, S2, S3, 54. Upstream of input E is
finds any
Claims (6)
- A self-inductance component comprising a winding wound on a rectilinear magnetic core, the winding comprising a first part is wound in one direction and a second part wound in another direction, characterized in that said magnetic core is formed by a plurality of ferrite rods placed side by side in a bundle.
- A self-inductance component as claimed in claim 1, characterized in that there are three ferrite rods.
- A self-inductance component as claimed in claim 2, characterized in that the three ferrite rods are disposed with their axes equidistant to each other.
- A self-inductance component as claimed in claim 1, characterized in that the parts wound in one direction and in the other have equal length except for one turn.
- A self-inductance component as claimed in claim 1, characterized in that the parts wound in one direction and in the other have equal length.
- A self-inductance component as claimed in claim 1, characterized in that the winding is made of a wire directly wound on the bundle of ferrite rods.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9802545A FR2775824A1 (en) | 1998-03-03 | 1998-03-03 | SELF INDUCTANCE COMPONENT |
| FR9802545 | 1998-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0940827A1 EP0940827A1 (en) | 1999-09-08 |
| EP0940827B1 true EP0940827B1 (en) | 2003-11-19 |
Family
ID=9523571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99200505A Expired - Lifetime EP0940827B1 (en) | 1998-03-03 | 1999-02-23 | Self-inductance component |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6118363A (en) |
| EP (1) | EP0940827B1 (en) |
| JP (1) | JPH11288814A (en) |
| DE (1) | DE69912869D1 (en) |
| FR (1) | FR2775824A1 (en) |
| SG (1) | SG74123A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002313630A (en) * | 2001-04-10 | 2002-10-25 | Uro Electronics Co Ltd | Choke coil |
| JP2010288244A (en) * | 2009-06-12 | 2010-12-24 | Pixela Corp | Lnb interface circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2279239A (en) * | 1937-10-18 | 1942-04-07 | Bbc Brown Boveri & Cie | High tension transformer |
| NL167816C (en) * | 1974-11-07 | 1982-01-18 | Philips Nv | HIGH-FREQUENCY SIGNAL TRANSFER. |
| JPS5885511A (en) * | 1981-11-16 | 1983-05-21 | Nishi Nippon Control Kk | Manufacture of reactor |
| TW252206B (en) * | 1993-09-01 | 1995-07-21 | Philips Electronics Nv | |
| JPH09330810A (en) * | 1996-06-07 | 1997-12-22 | Toyota Motor Corp | Low-loss core member |
| US5805042A (en) * | 1997-03-31 | 1998-09-08 | Scientific-Atlanta, Inc. | Radio frequency low hum-modulation AC bypass coil |
-
1998
- 1998-03-03 FR FR9802545A patent/FR2775824A1/en not_active Withdrawn
-
1999
- 1999-02-23 EP EP99200505A patent/EP0940827B1/en not_active Expired - Lifetime
- 1999-02-23 DE DE69912869T patent/DE69912869D1/en not_active Expired - Lifetime
- 1999-02-26 US US09/258,431 patent/US6118363A/en not_active Expired - Fee Related
- 1999-03-01 JP JP11052089A patent/JPH11288814A/en active Pending
- 1999-03-02 SG SG1999001050A patent/SG74123A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US6118363A (en) | 2000-09-12 |
| SG74123A1 (en) | 2000-07-18 |
| EP0940827A1 (en) | 1999-09-08 |
| JPH11288814A (en) | 1999-10-19 |
| FR2775824A1 (en) | 1999-09-03 |
| DE69912869D1 (en) | 2003-12-24 |
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