EP0740318A2 - Transformateur à haute tension pour un récepteur de télévision - Google Patents

Transformateur à haute tension pour un récepteur de télévision Download PDF

Info

Publication number: EP0740318A2
Authority: EP; European Patent Office
Prior art keywords: core; leg; legs; core leg; chamfer
Prior art date: 1995-04-28
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

EP96106154A

Other languages

German (de)

English (en)

Other versions

EP0740318A3 (fr

EP0740318B1 (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.)

1995-04-28

Filing date

1996-04-19

Publication date

1996-10-30

1996-04-19 Application filed by Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH

1996-10-30 Publication of EP0740318A2 publication Critical patent/EP0740318A2/fr

1997-06-04 Publication of EP0740318A3 publication Critical patent/EP0740318A3/fr

1999-05-26 Application granted granted Critical

1999-05-26 Publication of EP0740318B1 publication Critical patent/EP0740318B1/fr

2016-04-19 Anticipated expiration legal-status Critical

Status 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
- 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.
a transformer is known from DE-OS 43 02 271.
a wedge-shaped air gap is created between the ends of the core legs colliding, which advantageously influences the magnetization characteristic of the transformer.
the two legs meet e.g. together on the outer edge of the core.
the contact surface is punctiform or linear and therefore very small. This small area results in a high system pressure. Due to tolerance-related deviations in the geometric position of the two core legs relative to one another and in the dimensions of the core legs, it can therefore happen that the outer edges of the two core legs match exactly and then the risk of an edge breaking out on the outside of a core leg is particularly great.
the invention has for its object to modify the core so that the two core legs are properly supported even with tolerances and the risk of core parts breaking out is reduced.
the end of a core leg is thus chamfered or rounded on the outside such that the contact area between the core legs is removed from the outer edges of the core legs.
the contact area in which the two ends of the two legs meet is moved from the outer edge of the core legs towards the center of the core legs. If tolerances now occur in the position of this area, there is no longer any risk that the Contact area with the edges of the core legs.
the contact area, which is in particular punctiform or line-shaped, is thus with certainty for a core always in an area of the front end of the core leg that is far enough from the edge. The risk of breakage is thus eliminated for this core.
the edge of one core leg, with which it rests on the front end of the other core leg forms an angle of 90 ° and is therefore relatively sharp.
the edge at the end of one core leg, which meets the front end of the other core leg forms an increased angle of the order of 130-150 ° and is therefore less sharp, which reduces the risk of damage to this core leg becomes.
the invention is applicable to core legs with a round and rectangular cross section.
the end of the core leg is preferably provided with a chamfer. Such a chamfer can be produced when the core is pressed without any significant additional effort.
the chamfer preferably forms an angle of the order of 130 ° with the front end of the core leg and extends e.g. over about 10% of the width or diameter of the core leg.
the core leg is preferably symmetrically chamfered or rounded on opposite edges in the same way. This can simplify production and, in particular, avoid stresses during sintering of the core.
Fig. 1 shows a ferrite core 1 with two U-shaped core halves 2, 3 whose parallel legs 2a, 2b and 3a, 3b are each composed. This results in a first joint between the core legs 2a and 3a and a second joint between the core legs 2b and 3b.
the two core halves 2, 3 are tilted against each other. This results in a wedge-shaped air gap 5 at the upper joint, which causes the described improvement in the magnetization characteristic of the transformer and the reduction in the internal resistance of the high-voltage source.
the core legs 2a and 3a carry the coil former 8, which carries the primary winding 9 and the high-voltage winding 10 designed as a chamber winding.
the front end of the core leg 3a is now provided with a bevel in the form of a chamfer 11, which forms an angle ⁇ of approximately 130 ° with the remaining surface area of the front end of the core leg 3a.
a chamfer 11 which forms an angle ⁇ of approximately 130 ° with the remaining surface area of the front end of the core leg 3a.
the joint 4 which would in itself lie on the upper edge of the core legs 2a and 3a, is displaced in the direction of the center of the core legs 2a, 3a.
the joint 4 is now so far from the edge of the Core leg 2a and 3a removed that the edge at the end of the core leg 3a rests much more prone to breakage on the end face of the core leg 2a.
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 substantially greater than 90 °, namely approximately 130-150 °. This increased angle reduces the risk of the core being destroyed or individual core parts breaking out. For manufacturing reasons, the chamfer 11 is also provided symmetrically on the other edge of the core leg 3a.
Fig. 3 shows a known arrangement of the mutually tilted core legs 2a, 3a. This results in the dangerous punctiform or linear support 11 between two sharp edges, in which the risk of breaking out of ferrite parts is very high.

Landscapes

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

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 true EP0740318A2 (fr)	1996-10-30
EP0740318A3 EP0740318A3 (fr)	1997-06-04
EP0740318B1 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
EP1297541A1 (fr) *	2000-05-11	2003-04-02	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
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
US9905353B2 (en) *	2014-09-24	2018-02-27	Hiq Solar, Inc.	Construction of double gap inductor
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

1995
- 1995-04-28 DE DE19515226A patent/DE19515226A1/de not_active Withdrawn
1996
- 1996-03-27 US US08/622,915 patent/US5754087A/en not_active Expired - Lifetime
- 1996-04-19 EP EP96106154A patent/EP0740318B1/fr not_active Expired - Lifetime
- 1996-04-19 DE DE59601975T patent/DE59601975D1/de not_active Expired - Fee Related
- 1996-04-25 JP JP10555796A patent/JP3545128B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JP3545128B2 (ja)	2004-07-21
DE59601975D1 (de)	1999-07-01
EP0740318A3 (fr)	1997-06-04
US5754087A (en)	1998-05-19
JPH0945565A (ja)	1997-02-14
DE19515226A1 (de)	1996-11-07
EP0740318B1 (fr)	1999-05-26

Legal Events

Date	Code	Title	Description
1996-09-13	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
1996-10-30	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB IT
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1998-01-07	17P	Request for examination filed	Effective date: 19971031
1998-03-18	17Q	First examination report despatched	Effective date: 19980129
1998-10-02	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-11-18	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-11-18	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1999-02-16	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1999-04-09	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1999-04-29	ITF	It: translation for a ep patent filed
1999-05-26	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
1999-06-16	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19990526
1999-06-25	ET	Fr: translation filed
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2000-03-31	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
2000-05-17	26N	No opposition filed
2001-08-29	REG	Reference to a national code	Ref country code: GB Ref legal event code: 746 Effective date: 20010808
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2007-04-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20070424 Year of fee payment: 12
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