EP0740318B1 - Transformateur à haute tension pour un récepteur de télévision - Google Patents

Transformateur à haute tension pour un récepteur de télévision Download PDF

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Publication number
EP0740318B1
EP0740318B1 EP96106154A EP96106154A EP0740318B1 EP 0740318 B1 EP0740318 B1 EP 0740318B1 EP 96106154 A EP96106154 A EP 96106154A EP 96106154 A EP96106154 A EP 96106154A EP 0740318 B1 EP0740318 B1 EP 0740318B1
Authority
EP
European Patent Office
Prior art keywords
core
transformer according
legs
leg
core limb
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
Application number
EP96106154A
Other languages
German (de)
English (en)
Other versions
EP0740318A2 (fr
EP0740318A3 (fr
Inventor
Walter Goseberg
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0740318A2 publication Critical patent/EP0740318A2/fr
Publication of EP0740318A3 publication Critical patent/EP0740318A3/fr
Application granted granted Critical
Publication of EP0740318B1 publication Critical patent/EP0740318B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications

Definitions

  • the invention is based on a high-voltage transformer according to the preamble of claim 1.
  • Such Transformer is known from DE-OS 43 02 271.
  • a core leg colliding between the ends wedge-shaped air gap that defines the magnetization characteristic of the Transformer advantageously influenced.
  • the two legs come across e.g. together on the outer edge of the core.
  • the contact surface is punctiform or linear and therefore tiny. This small area results in a high one System pressure. Due to tolerance-related deviations in the geometric position of the two core legs to each other and in the Dimensions of the core legs can therefore occur that the The outer edges of the two core legs! then there is a risk of breaking an edge on the outside of a core leg is particularly large.
  • EP-A-0 039 485 describes a high-voltage transformer with windings and two core halves known, which form an air gap at a joint, in particular with a wedge-shaped cross section.
  • the air gap is e.g. B. realized by chamfering one of the two core parts.
  • the two Core halves are not tilted towards each other, but the ends of the two Core halves lie flat on one another on one side. Through this Measure, the internal resistance of the high voltage source is reduced.
  • the invention has for its object the core to change that even with tolerances a perfect circulation of the two core legs and there is a risk of breaking out of core parts is reduced.
  • the end of a core leg is at the outside so bevelled or rounded that the Contact area between the core legs from the outer edges of the Core leg is removed.
  • the edge of one forms Core leg with which this on the forehead of the other Core leg rests at an angle of 90 ° and is therefore relative sharp.
  • the edge at the end of a core leg the collides with the front end of the other core leg, one elevated angle in the order of 130 - 150 ° and is therefore less sharp, reducing the risk of damage this core leg is reduced.
  • the invention is in Core legs with round and rectangular cross-section applicable.
  • the end of the core leg is preferably with a chamfer Mistake. Such a chamfer can be found when pressing the core Manufacture without any significant additional effort.
  • the chamfer preferably forms with the front end of the core leg an angle of the order of 130 ° and extends e.g. over about 10% of the width or diameter of the Core leg.
  • the core leg is preferably on opposite edges symmetrically bevelled or rounded in the same way. This can simplify production and in particular Stresses during sintering of the core can be avoided.
  • Fig. 1 shows a ferrite core 1 with two U-shaped core halves 2, 3 whose parallel legs 2a, 2b and 3a, 3b, respectively are composed. This results in between the Core legs 2a and 3a a first joint and between the Core legs 2b and 3b a second joint. The two Core halves 2, 3 are tilted against each other. This results in at the upper joint a wedge-shaped air gap 5, which the described improvement of the magnetization characteristic of the Transformer and reducing the internal resistance of the High voltage source causes. Wear the core legs 2a and 3a the bobbin 8, the primary winding 9 and the as Chamber winding trained high voltage winding 10 carries.
  • the front end of the core leg 3a is now with a Bevel in the form of a chamfer 11 provided with the rest Surface area of the front end of the core leg 3a an angle ⁇ forms of about 130 °.
  • This phase 11 shifts the Joint 4, which is in itself on the upper edge of the core leg 2a and 3a would lie in the direction of the center of the core leg 2a, 3a.
  • the joint 4 is now so far from the edge of the Core limbs 2a and 3a removed that the edge at the front end of the Core leg 3a is much more prone to breakage on the end face of the core leg 2a rests.
  • Fig. 2 shows the formation of the core legs 2a and 3a somewhat enlarged. It can be seen that the angle ⁇ between the Chamfer 11 and the rest of the front end of the core leg 3a is significantly larger than 90 °, namely approximately 130-150 °. This increased angle reduces the risk of destruction of the Core or breaking out of individual core parts. Chamfer 11 is also symmetrical for manufacturing reasons provided another edge of the core leg 3a.
  • Fig. 3 shows a known arrangement of the tilted against each other Core limbs 2a, 3a. This results in the dangerous point or linear support 11 between two sharp edges, at which is very likely to break out ferrite parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (6)

  1. Transformateur à haute tension pour un récepteur de télévision avec un noyau (1) composé de deux moitiés de noyau (2, 3) inclinées l'une vers l'autre de telle sorte que les extrémités de deux branches de noyau (2a, 3a) forment un entrefer (5) en coin et sont en contact au niveau d'une surface d'appui (4) sur leurs bords extérieurs, caractérisé en ce que l'extrémité d'une branche de noyau (3a) est coupée en biseau ou arrondie de sorte que la surface d'appui est éloignée du bord extérieur de l'autre branche de noyau (2a).
  2. Transformateur selon la revendication 1, caractérisé en ce que l'extrémité de la branche de noyau (3a) est coupée en biseau (11).
  3. Transformateur selon la revendication 2, caractérisé en ce que le biseau (11) et l'extrémité de la branche de noyau (3a) forment un angle d'environ 130°.
  4. Transformateur selon la revendication 2, caractérisé en ce que le biseau (11) représente environ 10 % du diamètre de la branche de noyau (3a).
  5. Transformateur selon la revendication 1, caractérisé en ce que l'autre bord de la branche de noyau (3a) est coupé en biseau ou arrondi de façon identique et symétrique.
  6. Transformateur selon la revendication 1, caractérisé en ce que la coupe en biseau ou l'arrondi est réalisé sous presse lors de la fabrication du noyau (1).
EP96106154A 1995-04-28 1996-04-19 Transformateur à haute tension pour un récepteur de télévision Expired - Lifetime EP0740318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19515226 1995-04-28
DE19515226A DE19515226A1 (de) 1995-04-28 1995-04-28 Hochspannungstransformator für einen Fernsehempfänger

Publications (3)

Publication Number Publication Date
EP0740318A2 EP0740318A2 (fr) 1996-10-30
EP0740318A3 EP0740318A3 (fr) 1997-06-04
EP0740318B1 true EP0740318B1 (fr) 1999-05-26

Family

ID=7760343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106154A Expired - Lifetime EP0740318B1 (fr) 1995-04-28 1996-04-19 Transformateur à haute tension pour un récepteur de télévision

Country Status (4)

Country Link
US (1) US5754087A (fr)
EP (1) EP0740318B1 (fr)
JP (1) JP3545128B2 (fr)
DE (2) DE19515226A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545304A1 (de) * 1995-12-05 1997-06-12 Bosch Gmbh Robert Transformator mit aufgeteilter Primärwicklung in einer Sperrwandler-Versorgungsschaltung
WO2001086667A1 (fr) * 2000-05-11 2001-11-15 Canterprise Limited Transformateur basse frequence a noyau partiel
JP4775254B2 (ja) * 2006-12-26 2011-09-21 トヨタ自動車株式会社 リアクトルコアおよびリアクトル
US9905353B2 (en) * 2014-09-24 2018-02-27 Hiq Solar, Inc. Construction of double gap inductor
CN106716563A (zh) * 2014-09-24 2017-05-24 Hiq太阳能股份有限公司 双间隙感应器的新颖构造
US20170194091A1 (en) * 2016-01-05 2017-07-06 The Boeing Company Saturation resistant electromagnetic device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753709A1 (de) * 1977-12-02 1979-06-07 Blum Eisen & Metallind Aus blechen zu bildendes paket fuer elektrische maschinen, wie transformatoren, drosselspulen, zuendspulen, elektromotore, generatoren o.dgl.
DE3017368A1 (de) * 1980-05-07 1981-11-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Zeilentransformator fuer einen fernsehempfaenger
DE8428108U1 (de) * 1984-09-24 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Speicherdrossel
DE4302271A1 (de) * 1993-01-28 1994-08-04 Thomson Brandt Gmbh Hochspannungstransformator für einen Fernsehempfänger

Also Published As

Publication number Publication date
EP0740318A2 (fr) 1996-10-30
JP3545128B2 (ja) 2004-07-21
US5754087A (en) 1998-05-19
DE59601975D1 (de) 1999-07-01
JPH0945565A (ja) 1997-02-14
DE19515226A1 (de) 1996-11-07
EP0740318A3 (fr) 1997-06-04

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