EP0940827B1 - Composant à self-inductance - Google Patents
Composant à self-inductance 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
Claims (6)
- Composant à self-inductance comportant un enroulement bobiné sur un noyau magnétique rectiligne, l'enroulement étant bobiné en partie dans un sens et en partie dans l'autre, caractérisé en ce que le dit noyau magnétique est constitué de plusieurs bâtonnets de ferrite placés côte à côte comme dans un fagot.
- Composant à self-inductance selon la revendication 1, caractérisé en ce que les bâtonnets de ferrite sont au nombre de trois.
- Composant à self-inductance selon la revendication 2, caractérisé en ce que les trois bâtonnets de ferrite sont disposés avec leurs axes équidistants l'un de l'autre.
- Composant à self-inductance selon la revendication 1, caractérisé en ce que les parties bobinées dans un sens et dans l'autre sont de longueurs égales, à un tour près.
- Composant à self-inductance selon la revendication 1, caractérisé en ce que les parties bobinées dans un sens et dans l'autre sont de longueurs égales.
- Composant à self-inductance selon la revendication 1, caractérisé en ce que l'enroulement est fait d'un fil bobiné directement sur le fagot de bâtonnets de ferrite.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9802545A FR2775824A1 (fr) | 1998-03-03 | 1998-03-03 | Composant a self inductance |
FR9802545 | 1998-03-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0940827A1 EP0940827A1 (fr) | 1999-09-08 |
EP0940827B1 true EP0940827B1 (fr) | 2003-11-19 |
Family
ID=9523571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99200505A Expired - Lifetime EP0940827B1 (fr) | 1998-03-03 | 1999-02-23 | Composant à self-inductance |
Country Status (6)
Country | Link |
---|---|
US (1) | US6118363A (fr) |
EP (1) | EP0940827B1 (fr) |
JP (1) | JPH11288814A (fr) |
DE (1) | DE69912869D1 (fr) |
FR (1) | FR2775824A1 (fr) |
SG (1) | SG74123A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002313630A (ja) * | 2001-04-10 | 2002-10-25 | Uro Electronics Co Ltd | チョークコイル |
JP2010288244A (ja) * | 2009-06-12 | 2010-12-24 | Pixela Corp | Lnbインターフェース回路 |
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 (nl) * | 1974-11-07 | 1982-01-18 | Philips Nv | Hoogfrequente signaaloverdrachtsinrichting. |
JPS5885511A (ja) * | 1981-11-16 | 1983-05-21 | Nishi Nippon Control Kk | リアクトルの製造法 |
TW252206B (fr) * | 1993-09-01 | 1995-07-21 | Philips Electronics Nv | |
JPH09330810A (ja) * | 1996-06-07 | 1997-12-22 | Toyota Motor Corp | 低損失コア部材 |
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/fr not_active Withdrawn
-
1999
- 1999-02-23 DE DE69912869T patent/DE69912869D1/de not_active Expired - Lifetime
- 1999-02-23 EP EP99200505A patent/EP0940827B1/fr 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/ja active Pending
- 1999-03-02 SG SG1999001050A patent/SG74123A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
SG74123A1 (en) | 2000-07-18 |
FR2775824A1 (fr) | 1999-09-03 |
JPH11288814A (ja) | 1999-10-19 |
EP0940827A1 (fr) | 1999-09-08 |
DE69912869D1 (de) | 2003-12-24 |
US6118363A (en) | 2000-09-12 |
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