EP0642143A2 - Drosselspule - Google Patents

Drosselspule Download PDF

Info

Publication number
EP0642143A2
EP0642143A2 EP94202489A EP94202489A EP0642143A2 EP 0642143 A2 EP0642143 A2 EP 0642143A2 EP 94202489 A EP94202489 A EP 94202489A EP 94202489 A EP94202489 A EP 94202489A EP 0642143 A2 EP0642143 A2 EP 0642143A2
Authority
EP
European Patent Office
Prior art keywords
self
inductance coil
coil according
winding
wire
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
EP94202489A
Other languages
English (en)
French (fr)
Other versions
EP0642143A3 (de
EP0642143B1 (de
Inventor
Pascal Société Civile S.P.I.D. Rouet
Bernard Société Civile S.P.I.D. Delvart
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronique Gran Public
Koninklijke Philips Electronics NV
Philips Electronics NV
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
Application filed by Philips Electronique Gran Public, Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Philips Electronique Gran Public
Publication of EP0642143A2 publication Critical patent/EP0642143A2/de
Publication of EP0642143A3 publication Critical patent/EP0642143A3/de
Application granted granted Critical
Publication of EP0642143B1 publication Critical patent/EP0642143B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core

Definitions

  • the present invention relates to a self-inductance coil comprising a winding of electric wire wound around a rectilinear core.
  • a self-inductance coil is used to inject a low frequency current into a cable of a television distribution network, to power various devices.
  • a coil intended for the application mentioned above has relatively large dimensions, since it must let through large currents (of the order of ten amps). Therefore parasitic capacitances, between each turn and also vis-à-vis the environment, are troublesome because they induce in the characteristic of the inductance many resonance frequencies located in the bandwidth of television signals. This can be combated by damping the resonances by means of damping resistors. It has been proposed for example to split the winding into several parts, a resistor being connected in parallel on each of these parts. However, this means is costly to implement.
  • a coil according to the invention is remarkable in that it comprises a bar made of electrically resistive material which is placed between the winding and the core, the winding is produced in non-contiguous turns with a bare wire, and the wire is in contact with the bar.
  • electrically resistive means that the material of the strip is neither insulating nor good conductor but between the two.
  • the core comprises at least one cylindrical external part made of plastic material on the surface of which is formed a longitudinal groove in which the bar is placed, and the section of the latter is of such dimension, compared to that of the groove, a part of the bar protrudes outside the groove, so as to touch the winding wire.
  • the plastic cylinder preferably contains at least one ferrite cylinder.
  • the plastic cylinder advantageously has on its cylindrical outer surface a helical groove. This groove guides the wire during winding and keeps it in place afterwards.
  • the bar is made for example of insulating material loaded with conductive powder, for example silicone loaded with carbon powder.
  • the core according to the invention shown in Figure 1, consists of at least one ferrite cylinder 4 molded from a cylinder 1 made of plastic. On the surface of the latter is formed a longitudinal groove, for example of rectangular profile, in which is placed a bar 2 made of electrically resistive material and whose section, also rectangular, is of such dimension, compared to that of the groove , that part of the bar protrudes outside the throat.
  • the section of FIG. 2 also shows a turn of winding wire 3, for example of tinned copper, surrounding the plastic cylinder 1. When passing over the bar 2, the wire 3 is pressed on the latter.
  • the bar 2 is made for example of silicone loaded with a conductive powder made of carbon. It is easy to determine experimentally which resistivity is the most suitable.
  • the plastic cylinder 1 has on its cylindrical outer surface a helical groove 5.
  • This groove not only makes it possible to guide the wire during winding and to keep it in place afterwards, but it also ensures that the winding is carried out in non-contiguous turns. However, winding in non-contiguous turns could also be achieved without using this groove.
  • the wire is bare, that is to say not covered with insulation, and each turn 3 touches the bar 2.
  • the wire is pressed on the bar and sinks slightly, because the latter is made of a slightly elastic material.
  • a resistor is connected in parallel on each turn of the coil and the damping is more effective, because the damping resistance is distributed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP94202489A 1993-09-01 1994-08-31 Drosselspule Expired - Lifetime EP0642143B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310428A FR2709595A1 (fr) 1993-09-01 1993-09-01 Bobine de self-inductance.
FR9310428 1993-09-01

Publications (3)

Publication Number Publication Date
EP0642143A2 true EP0642143A2 (de) 1995-03-08
EP0642143A3 EP0642143A3 (de) 1995-05-10
EP0642143B1 EP0642143B1 (de) 1999-12-08

Family

ID=9450487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202489A Expired - Lifetime EP0642143B1 (de) 1993-09-01 1994-08-31 Drosselspule

Country Status (5)

Country Link
US (1) US5550523A (de)
EP (1) EP0642143B1 (de)
JP (1) JPH07122431A (de)
DE (1) DE69421976T2 (de)
FR (1) FR2709595A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5684341A (en) * 1993-08-07 1997-11-04 Magnet-Physik Dr. Steingroever Gmbh Electromagnetic generator for fast current and magnetic field pulses, for example, for use in magnetic metal working
DE10129163C2 (de) * 2001-06-16 2003-08-28 Bohnert Gmbh Spule mit Kern und Verfahren zu deren Herstellung
US8248198B2 (en) * 2009-07-22 2012-08-21 Johanson Manufacturing Corporation Variable inductor with non-magnetic core and method of manufacture therefor
US10211505B1 (en) * 2017-06-06 2019-02-19 Triad National Security, Llc Sideline radio-frequency power coupler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966815C (de) * 1953-07-18 1957-09-12 Siemens Ag Mittels Gewindefuehrung verstellbarer ferromagnetischer Abgleichstift kleinen Durchmessers fuer den Abgleich von auf einem Hauptkern angebrachten Spulen
FR2176734A1 (de) * 1972-03-17 1973-11-02 Siemens Ag

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641115A (en) * 1984-06-04 1987-02-03 Texscan Corporation Radio frequency chokes having two windings and means for dampening parasitic resonances
US4638282A (en) * 1985-07-18 1987-01-20 United Technologies Automotive, Inc. Wire cross-over arrangement for coil assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966815C (de) * 1953-07-18 1957-09-12 Siemens Ag Mittels Gewindefuehrung verstellbarer ferromagnetischer Abgleichstift kleinen Durchmessers fuer den Abgleich von auf einem Hauptkern angebrachten Spulen
FR2176734A1 (de) * 1972-03-17 1973-11-02 Siemens Ag

Also Published As

Publication number Publication date
US5550523A (en) 1996-08-27
DE69421976T2 (de) 2000-07-20
DE69421976D1 (de) 2000-01-13
FR2709595A1 (fr) 1995-03-10
EP0642143A3 (de) 1995-05-10
JPH07122431A (ja) 1995-05-12
EP0642143B1 (de) 1999-12-08

Similar Documents

Publication Publication Date Title
ATE368953T1 (de) Endenabschluss
EP2105994A1 (de) Verbindungsstruktur für zwei Supraleiterkabel
EP3735702B1 (de) Kabelumbaustromwandler mit einem flexiblen magnetkern
EP0141344A1 (de) Träge elektrische Schmelzsicherung
US4727222A (en) Flexible shielded coaxial cable
EP1705772A2 (de) Synthetisches Kabelende für Gleichstromkabel
EP0642143B1 (de) Drosselspule
FR2660827A1 (fr) Cable d'allumage bobine et son procede de fabrication.
CH320903A (fr) Isolateur de traversée
EP0248717B1 (de) Elektromagnetische Spule und Zündvorrichtung für Verbrennungsmotor mit einer solchen Spule
EP1324469B1 (de) Elektrischer Kommutatormotor mit Vorrichtung zur Verringerung von elektromagnetischen Störungen
EP0132427B1 (de) Läufer eines elektrischen Kleinmotors
EP1732187B1 (de) Radiofrequenzplasmazündkerze für gesteuerte Zündung von Verbrennungsmotoren
EP0794545B1 (de) Vakuumschalter oder Lastschalter
FR2800167A1 (fr) Dispositif pour la mesure d'un courant electrique et compteur d'electricite comprenant un tel dispositif
EP0367348B1 (de) Einstellbare passive Komponente
FR3081259B1 (fr) Limiteur de courant supraconducteur avec entretoise electriquement conductrice
JPH03280408A (ja) 平面インダクタンス素子
FR2564681A1 (fr) Element pour cloture de protection a detection de coupure
FR2953337A1 (fr) Paratonnerre a fonctionnement regule
FR2567308A1 (fr) Cable electrique blinde, notamment sous forme d'un cordon extensible, destine a etre relie a tout type de connecteurs miniaturises et normalises
FR2611895A1 (fr) Transducteur a inductance variable
FR1464530A (fr) Résistance électrique
BE490142A (de)
FR2647253A1 (fr) Transformateur d'impulsions de haute tension

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19951110

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PHILIPS ELECTRONICS N.V.

Owner name: PHILIPS ELECTRONIQUE GRAND PUBLIC

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19981113

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69421976

Country of ref document: DE

Date of ref document: 20000113

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000127

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20021231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030827

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030829

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20031015

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050429

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST