EP0865656B1 - Transformator mit aufgeteilter primärwicklung in einer sperrwandler-versorgungsschaltung - Google Patents
Transformator mit aufgeteilter primärwicklung in einer sperrwandler-versorgungsschaltung Download PDFInfo
- Publication number
- EP0865656B1 EP0865656B1 EP96934427A EP96934427A EP0865656B1 EP 0865656 B1 EP0865656 B1 EP 0865656B1 EP 96934427 A EP96934427 A EP 96934427A EP 96934427 A EP96934427 A EP 96934427A EP 0865656 B1 EP0865656 B1 EP 0865656B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- windings
- transformer
- transformer according
- coil former
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
- H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
- H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
- H01F2019/085—Transformer for galvanic isolation
Definitions
- the invention is based on a divided transformer Primary winding in a flyback converter supply circuit in the Preamble of claim 1 defined genus.
- DE 18 02 830 A describes a low-scatter transformer, the consists of an iron core and a winding body on which the Primary and secondary winding is applied.
- these Windings arranged alternately in layers, for example first one layer of the primary winding, then one layer of the secondary winding and then a position of the primary winding, again a position of the Secondary winding, etc.
- the same number of layers are both for the secondary winding as well as for the primary winding intended. Because of this winding arrangement lies either always a secondary winding layer or a primary winding layer Outside. It is never the layers of a winding completely from the layers the other winding covered. For this reason the coupling is between primary and secondary winding not in the here given desirable way.
- GB 2 216 729 A is a transformer with a rather complex one Core structure known in which the bobbin two chambers has, which are separated from each other by a partition.
- the transformer according to the invention with split Primary winding with the characterizing features of claim 1 has the advantage of the particularly close coupling of Primary and load-secondary winding with improved efficiency and the optimized coordination of core and Winding losses, so that no between core and winding significant temperature gradient occurs.
- the invention designed transformer allows a simple, optimized and inexpensive construction and a correspondingly cheap Production. It is also adaptable to various application profiles.
- At least three partial windings of the primary winding externally in parallel switched.
- at least two partial windings of the load secondary winding internally connected in parallel.
- the coil body is provided with two chambers, which are from a wall above the Area of the air gap to be separated.
- the individual turns the different windings are thus simple excluding the area of the air gap on the Coil body attached. This is especially true for one rational and cost-effective production advantageous, apart from of the security achieved, that in the area of the air gap there are no turns in which eddy currents from the stray field of the Air gap can be induced.
- this advantageous design of the Are in the wall that separates the chambers, Passages for the wires of the windings from one chamber into the others provided.
- each partial winding of the primary winding and / or the load secondary winding each have a part, preferably a half, on one side and a part, preferably also a half, on the other side of the area of the Air gap or in one of the chambers of the coil former is provided.
- each additional secondary winding preferably a half, on one side and a part, preferably also one half, on the other side of the Area of the air gap or in one of the chambers of the Coil body provided.
- Embodiment of the invention are the width of the chambers of the Bobbin, the diameter of the winding wire used and the number of turns of the partial windings on each other matched that a complete layer of the windings is assigned to a specific partial winding, and thus the entire chamber width is occupied. With this measure is one significant reduction in the winding width achieved.
- the turns be advantageous more in height above the bobbin built up and arranged in layers.
- the one essential to minimize loss and the other significant All windings contribute to simplifying production wound with wire of a single wire gauge and / or in Stranded wire.
- the invention which serves to ensure reverse polarity and is therefore of crucial value in practice provided that the pin assignment, which is in two Rows of equal number on opposite sides of the Coil body are arranged, with the beginnings and the ends of the Partial windings and the windings is made such that the Transformer with its pins is protected against polarity reversal, in particular in a test device and / or in a Circuit board with reverse polarity protection can be used in both positions.
- the transformer designed according to the invention is versatile adaptable and can be used accordingly. According to especially advantageous development of the invention, it is in particular for the use in the supply circuit of a high-pressure gas discharge lamp, which is preferred in headlights from Motor vehicles are used. He is with corresponding design with several additional Secondary windings a very convenient and inexpensive Component in such a supply circuit.
- FIG. 1 The nesting according to the invention is shown schematically in FIG according to a first embodiment of a transformer three partial windings on the primary side and two partial windings in the secondary load winding, as well as another Secondary winding shown outside the association.
- On Transformer 100 contains within a box 101 area shown the nesting of one in three Sub-windings P1a, P1b and P1c divided primary winding P1 and one divided into two sub-windings S1a and S1b Secondary winding S1.
- the nesting according to the invention generally looks like that the primary winding in at least three partial windings and the secondary winding which has the most performance and is most permanently loaded, as a load secondary winding referred to, is divided into at least two partial windings. So that there is a close coupling between these Partial windings of the primary winding P1 and the load secondary winding S1 there are the n partial windings of the Primary winding n - 1 partial windings of the load secondary winding S1 across from.
- the nesting is done in such a way that each a partial winding of the load secondary winding of two Partial windings of the primary winding P1 is included.
- each sub-winding P1a-c, S1a-b, S2 is so on the Coil body attached that a certain area above the Air gap of the magnetic core not with turns of the windings is provided. This will reduce induction current losses caused by the stray field, which is particularly pronounced at the air gap, can arise, minimized.
- the partial windings or windings are above the air gap 102 divided into two parts, preferably in half. To do this in a sensible and easy way for manufacturing reach is the bobbin, as will be related later 5 -7 will be explained with two chambers, preferably the same length. There is one in each chamber Half of the respective winding or partial winding applied.
- FIG. 2 schematically shows a second embodiment according to the invention with a representation of the individual winding layers on a bobbin 104 together with the assignment to Pins 1 - 12 shown.
- Pins 1 - 12 are, for example, in two rows on opposite sides arranged of the bobbin.
- the individual winding layers are from Coil body 104 seen from the outside with increasing Diameter first on this and then on the one below lying layers applied.
- the first partial winding P1a with a first layer 105 the lowest Winding position directly on the bobbin 104. This first Winding layer 105 is present twice, that is once in each Chamber.
- a next winding layer 106 is on the first winding layer 105 applied. This is electrically parallel with the first switched and arranged between the pins 10 and 2.
- the dots to the left of layers 105 and 106, and all others Layers mean the winding starts of the windings.
- On the Winding layer 106 of the first partial winding P1a of the primary winding P1 follows a first winding layer 107 of the first partial winding S1a Load secondary winding S1 between pins 11 and 5.
- Two winding layers 108 and 109 electrically connected in parallel to each other, between the Pins 9 and 3. This is followed by another winding layer 110 of the second partial winding S1b of the load secondary winding S1, also connected between pins 11 and 5 is.
- the two partial windings S1a and S1b are thus the load secondary winding internally connected in parallel. Then follows to Inclusion of the partial winding S1b a first winding layer 111 of the third partial winding P1c and then another winding layer 112 in electrical parallel connection to the winding layer 111 between the connecting pins 8 and 4. On this winding layer is then further winding layer 113 of a second secondary winding S2 and then a winding layer 114 of a third secondary winding S3 upset.
- the arrangement of winding layers described above different windings especially with regard to the secondary winding S1, which is exposed to continuous operation is a particularly close coupling with the primary winding P1 or whose partial windings P1a - P1c are safe. So that's a good one Efficiency for the desired power transmission guaranteed.
- FIG. 3 shown in view of the fact that according to the invention designed transformer the windings are designed so that the beginnings of the windings always on one side of the bobbin 104, for example in a row Pins 7 - 12 as shown in FIG. 2, are attached and the Ends of the windings always on the other side, for example for the pins 1 - 6 in the second row, are attached.
- the aim is that the AC voltage gradient ⁇ U ⁇ , represented by arrows 115, is kept as linear as possible from one side to the other and thus the AC voltage harmful to the insulation between the windings is kept as low as possible.
- Fig. 4 is the winding diagram with associated Pins of a reverse polarity protected version of the transformer 100 designed according to the invention.
- the Pins 1-12 are in two rows, 1-6 and 7-12, with 1 versus 12 and 6 versus 7, on opposite Longitudinal sides of the bobbin arranged.
- the single ones Windings are by dashes between the pins represented symbolically.
- the three partial windings of the primary winding P1 of Pin 10 out 2, 9 out 3 and 8 out 4 the load secondary winding S1 from pin 11 to 5, the Secondary winding S2 from pin 12 to 6 and the Secondary winding S3 from pin 7 to pin 1.
- This pin assignment is protected against polarity reversal and for Manufacturing optimal.
- Every winding can be used for be checked even if the transformer is rotated by 180 ° is plugged into the test adapter. It is also harmless the so designed transformer in one or the other, to be installed in a circuit board rotated by 180 °.
- the three Part windings P1a-c of the primary winding are external, for example on the circuit board, parallel to each other switched.
- a preferred embodiment of the invention designed transformer assigns as three externally in parallel switching primary partial windings. Are internal to everyone Partial winding two winding layers connected in parallel. Through these measures, the DC resistance of this Winding significantly reduced. Furthermore, this has preferred Transformer two internal windings connected in parallel S1a, S1b, which are intended for the main power.
- the second secondary winding S2 is also used to support the main service is provided, in the intended application, if there is an increased power requirement, as well as for decoupling Capacitors for generating a negative output voltage.
- the third secondary winding S3 provided generates one Auxiliary voltage, which only needs a short time and then is switched off.
- the transformer according to the invention is advantageously used wound with wire of a single wire gauge, making the Manufacturing is significantly simplified. Furthermore it is advantageous to use stranded wire. With the preferred In the exemplary embodiment, HF braid 20 x 0.1 ⁇ is used.
- the width of the chambers of the Bobbin is the width of the chambers of the Bobbin, the diameter of the winding wire used, and the number of turns of the partial windings or the windings matched to each other so that a complete layer or an integer multiple thereof, compare the Winding layers 105-114 in FIG. 2, a specific partial winding or winding is assigned, and thus across the width one chamber is wound.
- the one shown in Fig. 2 The exemplary embodiment contains each layer of the winding layers 105-112 e.g. 3 + 3 turns each, winding layers 113 and 114 each contain 6 + 6 turns, so that there two layers one Winding are arranged directly one above the other in each chamber. This also expediently leads to the winding width is reduced because it is wrapped up. There on There is a good need for intermediate insulation Coupling of the individual windings, especially in the Windings for the main power, and there will be no additional changing room needed.
- the transformer designed according to the invention is special intended for use in the supply or Control circuit of a high pressure gas discharge lamp.
- Such Lamps are increasingly used in headlights from Motor vehicles. These lamps need for their ignition, theirs Start-up and its operation of a special control that considerable demands on the supply and control circuit poses.
- control unit should be in the temperature range from -40 ° C to + 105 ° C (with stagnant air), and within the control unit, where the transformer is actually housed, a temperature of up to 125 ° C is permitted is to work flawlessly, just like the transformer despite its self-heating.
- the battery voltage is low ensures that the current consumption of the control unit determined Values do not exceed.
- the transformer shows none Signs of satiety.
- the wiring of the transformer designed according to the invention takes place externally. Depending on that, the ones generated by it Voltages to the corresponding circuit parts posed, e.g. great tension to ignite, small to start and medium voltage for lamp operation.
- Transformer 100 is in the three orthogonal views in FIGS 5 to 7 are shown.
- 5 shows transformer 100 of FIG an end face, FIG. 6 from a long side and FIG. 7 from above, i.e. from that side, along in two rows the long sides of the bobbin 104, the connecting pins 1 to 6 and 7 to 12 are attached.
- the coil former 104 has two Chambers 130 and 131, which are formed by a wall 132.
- the wall 132 is in the area of the air gap of the magnetic core 150 arranged and ensures that over the air gap that in the 5-7 cannot be seen because the coil former 104 has it covers, no turns can be attached.
- the magnetic core 150 is made up of two E-shaped halves that are magnetic Abut the reflux circuit on the surfaces 151, composed. So after postponing the wound Bobbin 104 on the middle part of the core 150 the parts stick together, they are glued together. This happens especially in the middle area, which contains the air gap and within the part of the winding carrying the Coil body 104 is located. Through the wall 132, which is about 3 mm thick there may be no turns over the air gap. Between the chambers 130 and 131 a passage 133 is provided through the winding wires 134 from one chamber to the other be led over. It is useful to do all such To carry out transfers in only one passage, because then the least crossing of the stray field over the air gap.
- the turns of the individual windings run in parallel to the two rows 1 - 6 and 7 - 12 of the connection pins.
- the Core size and type of core 150 can e.g. be an EF25 and he can be ground on one side.
- the measured self-heating at Continuous load with 35 W at a battery voltage that significantly below the nominal voltage, e.g. 13.2 V, is with approx. 22 ° C very low.
- the advantages of the transformer designed according to the invention are particularly in the following: inexpensive winding construction and manufacturing; does not require additional clips for Winding body and ferrite core; the winding width is reduced, so that the coupling to the control unit is adapted; the coupling of the individual windings is designed so that they optimally match the Control unit is adapted and there as well as a total of only one low power loss is generated; the self-heating is very small and largely the same in core and winding package; the Efficiency is very good at> 90%; and due to the good Structure are control units for more stringent operating conditions realizable.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Regulation Of General Use Transformers (AREA)
Description
- Fig. 1
- schematisch die erfindungsgemäße Verschachtelung gemäß einem ersten Ausführungsbeispiel eines Transformators mit drei Teilwicklungen auf der Primärseite und zwei Teilwicklungen bei der Last-Sekundärwicklung, sowie einer weiteren Sekundärwicklung außerhalb des Verbandes;
- Fig. 2
- schematisch ein zweites Ausführungsbeispiel gemäß der Erfindung mit einer Darstellung der einzelnen Wicklungslagen auf dem Spulenkörper zusammen mit der Zuordnung zu den Anschlußstiften, wobei sekundärseitig insgesamt drei Wicklungen vorgesehen sind;
- Fig. 3
- schematisch die Anordnung der Wicklungsanfänge auf nur einer Seite des Spulenkörpers, um ein lineares Wechselspannungsgefälle zu erzielen;
- Fig. 4
- schematisch den Wicklungsplan mit zugehörigen Anschlußstiften einer verpolsicheren Ausführung des erfindungsgemäß gestalteten Transformators;
- Fig. 5 - 7
- in drei Ansichten, von der Stirnseite, von der Längsseite und von der Seite der Anschlußstifte, einen erfindungsgemäß gestalteten Transformator.
Claims (14)
- Transformator (100) mit aufgeteilter Primärwicklung (P1) in einer Sperrwandler-Versorgungsschaltung, mit einer Sekundärwicklung (S1) zwischen den Teilen der Primärwicklung, einem einen Luftspalt (102) aufweisenden magnetischen Kern (150) und einen diesen umgebenden Spulenkörper (104), auf welchem die einzelnen Wicklungen aufgebracht sind, sowie mit einer Reihe von Anschlußstiften (1 - 12), an welche die Wicklungen angeschlossen sind,
dadurch gekennzeichnet,daß die Primärwicklung (P1) in zumindest drei Teilwicklungen (P1a, P1b, P1c) aufgeteilt ist,daß diejenige Sekundärwicklung (S1), welche leistungsmäßig am meisten und dauerhaftesten belastet ist, in zumindest zwei Teilwicklungen (S1a, S1b) aufgeteilt ist,daß die Teilwicklungen (S1a, S1b) dieser Last-Sekundärwicklung (S1) jeweils von zwei Teilwicklungen (P1a, P1b bzw. P1b, P1c) der zumindest drei Teilwicklungen (P1a, P1b, P1c) der Primärwicklung (P1) auf dem Spulenkörper (104) eingeschlossen sind,wobei jeweils die Anzahl der Teilwicklungen (P1a, P1b, P1c) der Primärwicklung (P1) um eins höher ist als die der Teilwicklungen (S1a, S1b) der Sekundärwicklung (S1),und daß gegebenenfalls eine oder mehrere weitere Sekundärwicklungen (S2, S3) außerhalb des Wicklungsverbandes (101) der Teilwicklungen (P1a, P1b, P1c; S1a, S1b) von Primär- und Last-Sekundärwicklung angeordnet sind. - Transformator nach Anspruch 1, dadurch gekennzeichnet, daß die zumindest drei Teilwicklungen (P1a, P1b, P1c) der Primärwicklung (P1) extern parallel geschaltet sind.
- Transformator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zumindest zwei Teilwicklungen (S1a, S1b) der Last-Sekundärwicklung (S1) intern parallel geschaltet sind.
- Transformator nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß im Bereich über dem Luftspalt (102) keine Windungen der Wicklungen (P1, S1, S2, S3) angebracht sind.
- Transformator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Spulenkörper (104) mit zwei Kammern (130, 131) versehen ist, die von einer Wand (132) über dem Bereich des Luftspaltes (102) getrennt werden.
- Transformator nach Anspruch 5, dadurch gekennzeichnet, daß in der Wand (132), welche die Kammern (130, 131) trennt, Durchlässe (133) für die Drähte (134) der Wicklungen (P1, S1, S2, S3) von einer Kammer (130) in die andere (131) vorgesehen sind.
- Transformator nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß von jeder Teilwicklung (P1a, P1b, P1c; S1a, S1b) der Primärwicklung (P1) und/oder der Last-Sekundärwicklung (S1) jeweils ein Teil, vorzugsweise eine Hälfte, auf der einen Seite und ein Teil, vorzugsweise ebenfalls eine Hälfte, auf der anderen Seite des Bereichs des Luftspaltes (102) oder in einer der Kammern (130, 131) des Spulenkörpers (104) vorgesehen ist.
- Transformator nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß von jeder weiteren Sekundärwicklung (S2, S3) jeweils ein Teil, vorzugsweise eine Hälfte, auf der einen Seite und ein Teil, vorzugsweise ebenfalls eine Hälfte, auf der anderen Seite des Bereichs des Luftspaltes (102) oder in einer der Kammern (130, 131) des Spulenkörpers (104) vorgesehen ist.
- Transformator nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Breite der Kammern (130, 131) des Spulenkörpers (104), der Durchmesser des verwendeten Wickeldrahtes (134) und die Anzahl der Windungen der Teilwicklungen (P1a, P1b, P1c; S1a, S1b) so aufeinander abgestimmt sind, daß jeweils eine vollständige Lage der Wicklungen einer bestimmten Teilwicklung zugeordnet ist, und damit die gesamte Kammerbreite belegt wird.
- Transformator nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß alle Wicklungen (P1, S1, S2, S3) mit Draht einer einzigen Drahtstärke gewickelt sind und/oder in Litzendraht ausgeführt sind.
- Transformator nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß die Anfänge aller Wicklungen auf einer Seite Anschlußstifte (7 - 12) am Spulenkörper (104) angebracht sind und die Enden der Wicklungen auf der anderen Seite Anschlußstifte (1 - 6) des Spulenkörpers (104) angeordnet sind.
- Transformator nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß die Belegung der Anschlußstifte (1'-12), die in zwei Reihen (1 - 6; 7 - 12) gleicher Anzahl auf gegenüberliegenden Seiten des Spulenkörpers (104) angeordnet sind, mit den Anfängen und den Enden der Teilwicklungen (P1a, P1b, P1c; S1a, S1b) und der Wicklungen (S2, S3) derart vorgenommen ist, daß der Transformator (100) mit seinen Anschlußstiften (1 - 12) verpolsicher ist, insbesondere in eine Prüfvorrichtung und/oder in eine Schaltungsplatine verpolsicher in beiden Lagen einsetzbar ist.
- Transformator nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß die Größe des magnetischen Kerns (150) des Transformators (100) und der elektrische Widerstand der auf dem Spulenkörper aufgebrachten Wicklungen (P1, S1, S2, 53) so aufeinander abgestimmt sind, daß die thermischen Verluste im Kern (150) und in den Wicklungen (P1, S1, S2, S3) zu einer solchen jeweiligen Erwärmung von Kern (150) bzw. Wicklungen (P1, S1, S2, S3) führen, daß kein wesentliches Temperaturgefälle zwischen Kern (150) und Wicklungen (P1, S1, S2, S3) auftritt.
- Transformator nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß er insbesondere für die Verwendung in der Versorgungsschaltung einer Hochdruck-Gasentladungslampe, welche bevorzugt in Scheinwerfern von Kraftfahrzeugen Einsatz finden, vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19545304A DE19545304A1 (de) | 1995-12-05 | 1995-12-05 | Transformator mit aufgeteilter Primärwicklung in einer Sperrwandler-Versorgungsschaltung |
DE19545304 | 1995-12-05 | ||
PCT/DE1996/001774 WO1997021232A1 (de) | 1995-12-05 | 1996-09-19 | Transformator mit aufgeteilter primärwicklung in einer sperrwandler-versorgungsschaltung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0865656A1 EP0865656A1 (de) | 1998-09-23 |
EP0865656B1 true EP0865656B1 (de) | 2000-03-22 |
Family
ID=7779210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96934427A Expired - Lifetime EP0865656B1 (de) | 1995-12-05 | 1996-09-19 | Transformator mit aufgeteilter primärwicklung in einer sperrwandler-versorgungsschaltung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6150914A (de) |
EP (1) | EP0865656B1 (de) |
JP (1) | JP2000501246A (de) |
KR (1) | KR19990071929A (de) |
DE (2) | DE19545304A1 (de) |
WO (1) | WO1997021232A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3367427B2 (ja) * | 1998-08-11 | 2003-01-14 | 株式会社高岳製作所 | 単相三線式変圧器 |
ES2151443B1 (es) * | 1999-01-18 | 2001-07-01 | Es De Electromedicina Y Calida | Transformador de alta tension. |
US20020053901A1 (en) * | 2000-10-05 | 2002-05-09 | Strayer Lance Ronald | Linear inductive fluid level sensor |
US6577219B2 (en) | 2001-06-29 | 2003-06-10 | Koninklijke Philips Electronics N.V. | Multiple-interleaved integrated circuit transformer |
JP4509544B2 (ja) * | 2003-01-21 | 2010-07-21 | 和夫 河野 | 巻線型トランス及びこの巻線型トランスを使用した電源装置 |
US8212643B1 (en) | 2008-07-09 | 2012-07-03 | Universal Lighting Technologies, Inc. | Bobbin for an inductive electronic component |
MX2017004361A (es) * | 2017-04-03 | 2018-11-09 | Prolec Ge Int S De R L De C V | Arreglo de devanados secundarios intercalados para transformadores monofásicos. |
Family Cites Families (14)
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FR365407A (fr) * | 1906-04-19 | 1906-09-07 | Jacob Bruckner | échalas de vignoble et de houblonnière |
DE1802830C3 (de) * | 1968-10-12 | 1975-08-28 | Robert Bosch Gmbh, 7000 Stuttgart | Streuarmer Transformator |
DE1816345A1 (de) * | 1968-10-21 | 1970-07-02 | Oberspree Kabelwerke Veb K | Schalenkernspule mit mindestens zwei symmetrischen Teilwicklungen |
US3638155A (en) * | 1970-11-06 | 1972-01-25 | Mega Power Corp | Electrical coil having integrated capacitance and inductance |
JPS5574111A (en) * | 1978-11-29 | 1980-06-04 | Hitachi Ltd | Transformer |
DE3129381A1 (de) * | 1981-07-25 | 1983-02-10 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltnetzteil-transformator, insbesondere fuer einen fernsehempfaenger |
JPH0217452Y2 (de) * | 1984-10-30 | 1990-05-16 | ||
DE3617348A1 (de) * | 1986-05-23 | 1987-11-26 | Electronic Werke Deutschland | Elektrischer wandler |
DE3732558A1 (de) * | 1987-09-26 | 1989-04-06 | Electronic Werke Deutschland | Transformator, insbesondere fuer ein schaltnetzteil |
JPH01227410A (ja) * | 1988-03-08 | 1989-09-11 | Kijima:Kk | 小形トランス |
US5576681A (en) * | 1990-12-10 | 1996-11-19 | Deutsche Thomson-Brandt Gmbh | High voltage transformer |
US5696477A (en) * | 1994-05-30 | 1997-12-09 | Tabuchi Electric Co., Ltd. | Transformer |
US5751205A (en) * | 1995-02-27 | 1998-05-12 | Deutsche Thomson Brandt Gmbh | High-voltage transformer for a television receiver |
DE19515226A1 (de) * | 1995-04-28 | 1996-11-07 | Thomson Brandt Gmbh | Hochspannungstransformator für einen Fernsehempfänger |
-
1995
- 1995-12-05 DE DE19545304A patent/DE19545304A1/de not_active Ceased
-
1996
- 1996-09-19 DE DE59604803T patent/DE59604803D1/de not_active Expired - Lifetime
- 1996-09-19 WO PCT/DE1996/001774 patent/WO1997021232A1/de not_active Application Discontinuation
- 1996-09-19 US US09/077,705 patent/US6150914A/en not_active Expired - Fee Related
- 1996-09-19 EP EP96934427A patent/EP0865656B1/de not_active Expired - Lifetime
- 1996-09-19 KR KR1019980704216A patent/KR19990071929A/ko not_active Application Discontinuation
- 1996-09-19 JP JP9520842A patent/JP2000501246A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US6150914A (en) | 2000-11-21 |
WO1997021232A1 (de) | 1997-06-12 |
JP2000501246A (ja) | 2000-02-02 |
KR19990071929A (ko) | 1999-09-27 |
EP0865656A1 (de) | 1998-09-23 |
DE59604803D1 (de) | 2000-04-27 |
DE19545304A1 (de) | 1997-06-12 |
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