EP0918342B1 - Geschlitzter transformator - Google Patents

Geschlitzter transformator Download PDF

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Publication number
EP0918342B1
EP0918342B1 EP98917775A EP98917775A EP0918342B1 EP 0918342 B1 EP0918342 B1 EP 0918342B1 EP 98917775 A EP98917775 A EP 98917775A EP 98917775 A EP98917775 A EP 98917775A EP 0918342 B1 EP0918342 B1 EP 0918342B1
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EP
European Patent Office
Prior art keywords
winding
coil
windings
high frequency
bobbin
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EP98917775A
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English (en)
French (fr)
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EP0918342A1 (de
EP0918342A4 (de
Inventor
Bong Soo Jeong
Jin Ho Yang
Jin Wook 101 Ga-dong KOO
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Samwha Electronics Co Ltd
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SAMWHA ELECTRONICS CO Ltd
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • 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

Definitions

  • the present invention relates to a core like EER and EI (see fig to 6 and fig. 12, respectively) and a high frequency transformer including coil wound at a bobbin in the transformer which is used at all sorts of electricity and electric circuit device.
  • the present invention is about forming plurality of slots at a right angle to the central axis of cylindrical winding part which is formed at the bobbin of the transformer, making the method of coil winding automatic by winding the first coil and second coil at the slot and reducing the manufacturing cost of the high frequency transformer.
  • Fig. 1a is a perspective view of bobbin used in the conventional high frequency transformer and Fig. 1b is a cross sectional view of Fig. 1a.
  • bobbin 1 is formed with fixing part 3 which fixes supporting part of the core being located between two rectangular hexahedron type support 2a and 2b that is formed in parallel.
  • fixing part 3 which fixes supporting part of the core being located between two rectangular hexahedron type support 2a and 2b that is formed in parallel.
  • lead line connecting element 8 of the core is formed at the lower side of the support 2a and 2b lead line connecting element 8 of the core is formed.
  • At the upper part of the fixing part 3 a cylindrical winding part 6 is formed.
  • a fixing part 7 which fixes the supporting part of the core is formed at the upper part of the winding part 6 and a penetrating hole 4 which penetrates fixing parts 3 and 7 and winding part 6 simultaneously is formed.
  • Bobbin 1 which has the structure of the fig. 1a could be changed into a structure shown in fig. 2a and fig. 2b (a plan view of fig. 1a) when the first coil and second coil is wound at the bobbin 1.
  • the first coil 10a is wound around the winding part 6 before a certain length of insulating tape 25a is wound on the first coil for insulation among layers.
  • Second coil 20a is wound on the insulating tape 25a and insulating tape 25b is wound on the second coil 20a for insulation among layers.
  • First coil 10b is wound on the insulating tape 25b and then insulating tape 25c is wound on the first coil 10b.
  • Second coil 20b is wound on the insulating tape 25c and insulating tape 25d is wound on the second coil 20b.
  • barrier tape 35 is wound between the first coil and the second coil which is wound near the edge of the winding part 6 of the bobbin in order to satisfy the international and domestic standard.
  • the wound first and second coil is connected to a certain connecting element 8 which is formed at the lower side of prop part 2a and 2b.
  • an insulating tape must be wound at the boundary of the first coil and second coil at the process of winding the first coil and the second coil in order to satisfy a certain standard of the transformer.
  • barrier tape in order to satisfy the certain distance between the first coil and second coil at the end of the first and second coil winding, barrier tape must be wound. In other words, after winding the first coil at the bobbin, wind insulating tape and barrier tape and then wind the second coil on the insulating tape.
  • the winding process of insulating layer and the coil is divided into several manufacturing steps, winding must be done i'n person and the winding method cannot be done automatically. Also, when varnish dipping process is done to prevent the shorting of the wound coil, insulating tape is wound at and protects each of the coil layers so there is no need for vacuum device in order for the varnish to fully percolate each of the coil layers.
  • the present invention designed and invented to overcome the problems mentioned so far. This object is achieved by the apparatus according to the features of claim 1. Preferred embodiments are described in the dependent claims.
  • the aim of the present invention is to manufacture and provide high frequency slot transformer with a reduced manufacturing cost than prior arts by removing the insulating layer and the like which exists between the wound coil.
  • Yet another aim of the present invention is to carry out the varnish dipping process in order to prevent shorting of the coil in the atmospheric pressure without vacuum device.
  • the geometrical structure of the conventional bobbin has to be changed.
  • bobbin 101 of the present invention comprises fixing part 103 which fixes supporting part of the core between the prop 102a and 102b that is formed in parallel and a plurality of connecting element 108 at the lower side of the prop 102a and 102b.
  • the invention comprises a cylindrical winding part 106 which is at the upper part of the fixing part 103 and a fixing part 107 which fixes the supporting part of the core and it is at the upper part of the winding part 106.
  • a penetrating hole 104 which penetrates the lower part of the fixing part 103, the cylindrical winding part 106 and the upper part of the fixing part 107 simultaneously is also comprised in the present invention.
  • the cylindrical winding part 106 should comprise plurality of slots 150 with a certain distance to be at a right angle to the central axis of the penetrating hole 104 which is formed at the cylindrical winding part 106.
  • the partition 151 which is formed between slot 150 should be formed with insulator and the thickness of the partition 151 of the slot should be determined after considering international standard size, characteristics and effects. All the more, the height of the partition 151 of slot is determined to maintain an appropriate distance along the coil lead line which is drawn out as connecting element of each of the transformer and winding height of the total area of the wound coil when the coil is wound at each slot.
  • a core 130 is included as EER type as shown in the structure of fig. 6 and projecting parts 132a and 132b which are at a right angle to a supporting part 129 are inserted with a certain length at both ends of the supporting part 129.
  • a projecting part 131 is fixed with the same direction of projecting parts 132a and 132b at the central part of the supporting part 129.
  • the length of the projecting part 131 is formed to be shorter than projecting parts 132a and 132b so that the ends of the projecting part 131 do not contact each other and maintain a certain distance when projecting parts 132a and 132b are fixed and two cores are arranged to face each other.
  • the first and second coil is wound at a right angle to a central axis of the projecting part 131 at the total section where a projecting part 131 of the core is formed. Due to the t structure in which the first and second coil winding are arranged separately at each selected slot in parallel with the central axis of the projecting part 131, the leakage inductance could be higher than the conventional winding structure as a result of link operation of the magnetic field between wound coil. Therefore, coil should arranged separately according to a certain rule in order to maintain an appropriate coupling co-efficient of the first and second coil.
  • first and second coil have to be arranged in a pattern to lower the link magnetic flux.
  • the flyback method transformer is as shown in figs. 5a , 5b and 7.
  • the flyback method transformer comprises bobbin 101, upper core 300 and lower core 200.
  • the bobbin 101 there are winding part 106, fixing part 103 and 107 which are formed at both ends of the winding part 106, a penetrating hole 104 which penetrates the winding part 106, the fixing part 103 and 107 and a plurality of connecting element 108 formed at the fixing part 103.
  • the first coil, P1, P2,..., P-1, P-2 and the second coil, S1, S2, ..., S-1, S-2 are wound.
  • a plurality of slots 150 is included at the winding part 106 of the bobbin 101, each supporting part 129 of the upper core 300 and lower core 200 are fixed at fixing part 103 and 107 located at both ends of the bobbin 101, the projecting part 131 of the upper and lower core faces each other with a certain gap inside the penetrating hole 104 of the bobbin, projecting parts 132a and 132b of the upper and lower core are fixed to each other by contacting at the outer side of winding part 106 of the bobbin, the first and second coil are wound at the winding part 106, wherein the windings of the first coil and the windings of the second coil are wound in turns at each slot 150 taking the certain gap made by the projecting part 131 as a yardstick and the lead line of the first and second coil is connected to the connecting element 108 selected at the bobbin.
  • the coil Nf shown in fig. 7 is feedback coil.
  • the forward method transformer comprises a bobbin and a core.
  • the bobbin 101 there are winding part 106, fixing parts 103 and 107 which are formed at both ends of the winding part 106, a penetrating hole 104 penetrating fixing parts 103 and 107 and the winding part 106 and a plurality of connecting element 108 formed at the fixing part 103.
  • each projecting part 232a and 232b formed in the same direction at both ends of the first supporting part 229, projecting parts 232a and 232b are formed in the same direction with a projecting part 231 at the center of the first supporting part 229 and the second supporting part 230 which contacts to the projecting parts 231, 232a and 232b.
  • the winding part 106 of the bobbin 101 there are the first coil, P1, P2, ..., P-1, P-2 and the second coil, S1, S2, ..., S-1, S-2 are wound.
  • a plurality of slots 150 is included at the winding part 106 of the bobbin 101, the first supporting part 229 and the second supporting part 230 of the core 400 are fixed at the fixing parts 103 and 107 located at both ends of the bobbin 101, the projecting part 231 of the core 400 penetrates the penetrating hole 104 of the bobbin and is fixed at the center of the second supporting part 230 and projecting parts 232a and 232b of the core are fixed by contacting at both ends of the second supporting part 230 from outside of the winding part 106 of the bobbin, the first and second coil wound at the winding part 106 of the bobbin wind in turns at each of the slot 150 to be symmetrical putting the center of the winding part 106 as a yardstick and a lead line of the first and second coil connects to the selected connecting element 108 of the bobbin 101. More detailed description of winding method and operation of the high frequency slot transformer of the present invention will be given hereinafter.
  • fixing part 103 which fixes the supporting part of the core is included between the prop 102a and 102b that are in parallel, a plurality of connecting element 108 is included in the bottom of the prop 102a and 102b, a cylindrical winding part 106 is included at the upper part of the fixing part 103, a fixing part 107 which fixes supporting part of the core is included at the upper part of the winding part 106, a plurality of a slot 150 which has a certain distance are included at the winding part 106 and a penetrating hole 104 which penetrates lower part of the fixing part 103, cylindrical winding part 16 and the upper part of the winding part 107 simultaneously are included to form the bobbin 103.
  • All the other materials excluding connecting element 108 of the bobbin 101 use insulator plastic material and form as one body type.
  • the thickness and height of the partition 151 of the slot 150 which is included at the winding part 106 is determined after considering international standard, efficiency and the like.
  • the EER type core is not the only core which can be used.
  • EE type core can be used and in case of using EE type core, it is appropriate to form the structure of winding part of the bobbin as shown in fig. 13.
  • winding part 106 of the coil and penetrating hole 104 are square shape instead of cylindrical shape. Therefore, the shape of penetrating hole and the winding part can be changed according to the type of the core.
  • each end of projecting part 131 of the upper and lower core do not contact each other at the center part of the penetrating hole 104 of the bobbin and a certain gap is formed.
  • the first and second coil are wound in turns at each slot 150 which is formed at the winding part of the bobbin, empty one slot putting the gap formed between projecting part 131 of the core as a yardstick and wind the first coil at both slots nearby then wind the second coil at a slot nearby the slot where the first coil is wound.
  • the first coil P1 and P-1 is wound at both slots.
  • the second coil S1 is wound at the outer slot of the first coil P1
  • second coil S-1 is wound at the outer slot of the first coil P-1
  • the first coil P2 is wound at the outer slot of the second coil S1
  • the first coil P-2 is wound at the outer slot of the second coil S-1
  • the second coil S2 is wound at the outer slot of the first coil P2
  • the second coil S-2 is wound at the outer slot of the first coil P-2.
  • the high frequency slot transformer By forming at least four or five slots to thicken the partition of the slot as the central part and putting the above mentioned partition or one slot at the central part as a boundary and winding the first coil at both ends and the second coil at the outside, the high frequency slot transformer can be formed.
  • forming the high frequency slot transformer with lots of slots 150 and by winding after several division of coils according to the winding rule results in a more effective transformer in technic.
  • the number of slots are limited in case the size of the winding part is limited, it is appropriate to determine the number of slots giving consideration to the size and characteristic of the transformer.(This preferred embodiment is formed with nine slots.)
  • the leakage inductance at each boundary of the first and second coil or gap part of the projecting part 131 could be higher than the conventional winding structure. Therefore, in order to maintain appropriate level of coupling coefficient of the first and second coil, arrange the gap made by the thickness of partition 151 of the slot and the width of the slot in which the second coil is not wound at the central part or the projecting part 131 of the core coil in appropriate pattern.
  • the coil it is appropriate to wind the coil so that the number of winding between the P1 and P-1, the P2 and P-2, the S1 and S-1 and the S2 and S-2 is the same. It is appropriate that the winding ratio between the P1 and P2 is 1.3:1 or above so that the loss of link magnetic flux is lowered. Also, the height of the partition 151 of the slot 150 should be determined to maintain a certain space distance after considering the winding height of the total area of the wound coil and the distance with the coil which is drawn out as a connecting element when the coil is wound at each slot.
  • the switching device In case of attaching a switching device which has feedback coil Nf in the structure of fig. 7, for the reason that the first and second coil are wound in turns in the direction of a central axis of the cylindrical winding part, the switching device becomes unstable if the feedback coil Nf is arranged in a symmetrical pattern or a row pattern and wound due to the disagreement of the geometrical magnetic field. Therefore, it is appropriate that the feedback coil be wound at one of the P2 or P-2 of the first coil which is located at the most outer side of the winding part in order to maintain the safety of the switching device.
  • the reason for winding the feedback coil at the winding part of the first coil is to maintain the insulating condition between the feedback coil and the second coil. For the above mentioned reason the feedback coil Nf is wound at the P-2 of the first coil in fig. 7.
  • Another way of winding a different type feedback coil Nf is to wind the feedback coil on the second coil because the number of slots fewer or it is difficult to obtain the distance between feedback coil and the gap of core.
  • it is appropriate to use feedback coil coated with triple insulating layer because it is necessary to make the second coil and the feedback coil Nf to be insulated sufficiently. So, it is appropriate to wind the feedback coil at the most further winding part of the second coil from the gap of the core in the above mentioned case.
  • the fig. 7 structured as an equivalent circuit is as the structure shown in fig. 8.
  • a switching device comprising the feedback coil Nf, a switch 415 and regulating circuit is included and the feedback coil Nf of the switching device is connected to a high frequency slot transfer 500.
  • Np is the first coil winding
  • Ns is the second coil winding
  • 416 is a rectifier for rectifying output power
  • 417 is a smoothing capacitance.
  • the Np of the first coil and Ns of the second coil could be wound as shown in fig. 9.
  • the second coil S-2 is wound at the outer slot of the first coil P-1
  • the first coil P2 is wound at the outer slot of the second coil S-2
  • the first coil P-2 is wound at the outer slot of the second coil S-2
  • the second coil S2 is wound at the outer slot of the first coil P2
  • the second coil S-2 is wound at the outer slot of the first coil P-2 and the equivalent circuit.
  • the first coil and the second coil are connected to the selected connecting element 108 of the bobbin and especially, the first coil is connected to the input connecting element and the second coil is connected to the output connecting element.
  • the method of connecting wire between the first coil and the second coil can be connected in various ways according to the characteristics of transformer. For example, connect the P1 and P-1, P2 and P-2 of the first coil in parallel connection and the S1 and S-1, S2 and S-2 of the second coil in parallel connection. Furthermore, use lead line so that the parallel connected P1 and P-1 of the first coil is in series connection to the parallel connected P2 and P-2 of the first coil and parallel connected S1 and S-1 of the second coil is in series connection to the parallel connected S2 and S-2 of the second coil are connected to the connecting element 108.
  • the basic flyback structure of the high frequency slot transformer as mentioned above has the outside structure as shown in fig. 11.
  • the most outstanding difference form the conventional high frequency slot transformer is the winding part of the bobbin is separated in several slots and the first and second coil are arranged in turns at the slot along the central axis of the winding part of the bobbin.
  • the second supporting coil By winding a second supporting coil on top or under the wound second coil in the basic flyback structure of the high frequency slot transformer, the second supporting coil could be used as a supporting output power.
  • the above mentioned high frequency slot transformer where the second supporting coil is wound is equivalent to the circuit in fig. 8a.
  • Ns is the winding part of the second coil which functions as a main output power
  • the physical structure of the winding of the second supporting coil is described in fig. 8c as an example.
  • the S1 and S2 of the second coil and the P2 of the first coil are wound at the slot of the winding part of the bobbin 101.
  • the S1+S2 of the second coil forms the main output power
  • the P2 of the first coil forms the main input power.
  • S2' which winds on the S2 of the second coil is the second supporting coil.
  • S2' of the second supporting coil functions as supporting output power as Nsa in fig. 8b.
  • the second supporting coil S2' could be wound before winding the second coil S2 or it could be wound on the second coil S1.
  • the second supporting coil S2' could be wound at more than one place selectively according to the function of the transformer in the area where the second coil S1 and S2 are wound and function as a supporting output power.
  • the high frequency slot transformer of the present invention even if the coil is wound in the above mentioned structure, it maintains the same characteristics with the conventional high frequency slot transformer or has better characteristics.
  • the change in the structure of the high frequency slot transformer of the present invention allowed automatic winding of the coil which was impossible in the conventional high frequency transformer and more than 30% of manufacturing cost was reduced since there is no need to wind an insulating tape nor barrier tape separately.
  • the high frequency slot transformer of the forward method is different from the flyback high frequency slot transformer and has a structure as shown in fig. 10.
  • the biggest difference between the flyback method and the forward method is that a projecting part 231 of the core which is inserted and installed in the penetrating hole 104 is not disconnected inside the penetrating hole 104 but connected in one body type.
  • the assembling steps or the winding steps of the forward method high frequency slot transformer is similar to the flyback method.
  • a plurality of slots 150 which have a certain distance are included in the winding part 106 of the bobbin, so that usage of an insulating tape or barrier tape is not necessary for the first and second coil are wound in turns at each of the slot and the winding steps of the coil could be done automatically as shown in figs. 5a and 5b.
  • effect of the present invention lies in the facts that firstly, the winding step of the coil is done automatically, secondly, cost of the manufactured products are reduced drastically as there is no need to use an insulating tape which is used in winding and finally, stabilized products are produced and provided.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Claims (12)

  1. Hochfrequenz-Schlitztransformator, welcher aufweist:
    eine Spule (101), welche einen verlängerten Wicklungsabschnitt (106) hat, welcher Fixierteile (103, 107) aufweist, welche an beiden Längsenden des Wicklungsabschnittes (106) bereitgestellt sind und welche ein Durchgangsloch (104) hat, welches sich durch den Wicklungsabschnitt (106) und die Fixierteile (103, 107) hindurch in Längsrichtung des Wicklungsabschnittes (106) erstreckt;
       wobei die Spule (101) ferner eine Mehrzahl von Koppelelementen (108) aufweist, welche zumindest an einer Seite der Fixierelemente (103, 107) befestigt sind;
       eine Mehrzahl von Schlitzen (150), welche in einem rechten Winkel zu der Zentralachse des Durchgangsloches (104) an dem Wicklungsabschnitt (106) der Spule (101) ausgebildet sind, und welche in Längsrichtung des Wicklungsabschnittes (106) durch Trennwände (151) in einem Abstand zueinander angeordnet sind,
    wobei eine zusätzliche Lücke in der Längsmitte der Schlitzanordnung vorgesehen ist, womit die Schlitze in zwei Sätze von Schlitzen geteilt werden;
       ein Mittelstück (130, 400), welches einen ersten Stützteil (129, 229) und einen zweiten Stützteil (129, 230), welche an einem jeweiligen Längsende des Wicklungsabschnittes angeordnet sind, einen ersten hervorstehenden Teil (132a, 232a) und einen zweiten hervorstehenden Teil (132b, 232b), welche an zumindest einem von dem ersten und zweiten Stützteil (128, 229, 230) angeordnet sind und welche in Längsrichtung des Wicklungsabschnittes zu Lateralseiten davon hervorstehen, und einen dritten hervorstehenden Teil (131, 231) aufweist, welcher an dem zumindest einem von dem ersten und zweiten Stützteil (129, 229, 230) an einer Zentralposition davon angeordnet ist und mit einer gewissen Lücke in das Durchgangsloch (104) hineinsteht, wobei der erste Stützteil (129, 229) und der zweite Stützteil (129, 230) zumindest mittels des ersten und des zweiten hervorstehenden Teils (132a, 232a, 132b, 232b) miteinander verbunden und aneinander befestigt sind;
       erste Wicklungen (P1..Pn, P-1...P-n) und zweite Wicklungen (S1...Sn, S-1...S-n), welche am Wicklungsabschnitt (106) gewickelt sind, wobei die ersten Wicklungen (P1..Pn, P-1...P-n) und die zweiten Wicklungen (S1...Sn, S-1...S-n) abwechselnd in jedem der Mehrzahl von Schlitzen (150) gewickelt sind, wobei die gewisse Lücke als ein Maßstab genommen ist; und
       wobei eine Zuführleitung der ersten und der zweiten Wicklungen an ein ausgewähltes Koppelelement (108) der Spule (101) gekoppelt ist.
  2. Hochfrequenz-Schlitztransformator gemäß Anspruch 1,
       wobei der erste hervorstehende Teil (132a, 232a), der zweite hervorstehende Teil (132b, 232b) und der dritte hervorstehende Teil (131, 231) an dem ersten Stützteil (129, 229) angeordnet sind,
       wobei das Mittelstück (400) ein oberes Mittelstück (300) und ein unteres Mittelstück (200) aufweist;
       wobei der erste Stützteil (129) Teil eines von dem oberen Mittelstück (300) und von dem unteren Mittelstück (200) ist;
       wobei der zweite Stützteil (129, 230) Teil des anderen von dem oberen Mittelstück (300) und von dem unteren Mittelstück (200) ist, wobei am zweiten Stützteil (129, 230) ein zusätzlicher erster hervorstehender Teil (132a, 232a) und ein zusätzlicher zweiter hervorstehender Teil (132b, 232b) angeordnet sind und in Längsrichtung des Wicklungsabschnitts zu Lateralseiten davon hervorstehen, und ein zusätzlicher dritter hervorstehender Teil (131, 231) an dem zweiten Stützteil (129, 230) an einer Zentralposition davon angeordnet ist und in das Durchgangsloch (104) der Spule (101) hineinsteht; und
       wobei das obere Mittelstück (300) und das untere Mittelstück (200) an der Außenseite des Wicklungsabschnittes (106) der Spule (101) sowohl mittels des ersten hervorstehenden Teils (132a, 232a) und des zusätzlichen ersten hervorstehenden Teils (132a, 232a) als auch mittels des zweiten hervorstehenden Teils (132b, 232b) und des zusätzlichen zweiten hervorstehenden Teils (132b, 232b) miteinander verbunden und aneinander befestigt sind, während der dritte hervorstehende Teil (131, 231) und der zusätzliche dritte hervorstehende Teil (131, 231) sich mit einer gewissen Mittellücke innerhalb des Durchgangslochs (104) der Spule (101) gegenüberstehen.
  3. Hochfrequenz-Schlitztransformator gemäß Anspruch 1 oder 2, welcher dadurch gekennzeichnet ist, dass die ersten und zweiten Wicklungen (P1, P-1, P2, P-2, S1, S-1, S2, S-2) abwechselnd in den Schlitzen gewickelt sind, beginnend mit den ersten Wicklungen in den Schlitzen benachbart zu der Lücke.
  4. Hochfrequenz-Schlitztransformator gemäß Anspruch 3, welcher dadurch gekennzeichnet ist, dass zumindest einer oder mehrere Schlitz(e) zwischen den ersten Wicklungen (P1 und P-1) leer ist/sind.
  5. Hochfrequenz-Schlitztransformator gemäß Anspruch 3, welcher dadurch gekennzeichnet ist, dass eine Feedback-Spule (Nf) im, bezogen auf die Lücke, äußersten Schlitz der ersten Wicklungen (P2 oder P-2) gewickelt ist.
  6. Hochfrequenz-Schlitztransformator gemäß Anspruch 3, welcher dadurch gekennzeichnet ist, dass eine Feedback-Spule, welche mit einer dreifachen Isolationsschicht beschichtet ist, (Nf) auf einer der zweiten Wicklungen gewickelt ist.
  7. Hochfrequenz-Schlitztransformator gemäß Anspruch 6, welcher dadurch gekennzeichnet ist, dass eine Feedback-Spule (Nf) im, bezogen auf die Lücke, äußersten Schlitz der zweiten Wicklungen (S2 oder S-2) gewickelt ist.
  8. Hochfrequenz-Schlitztransformator gemäß Anspruch 7, welcher dadurch gekennzeichnet ist, dass eine Trennwand zwischen dem Schlitz Isolationsmaterial ist und dass die Höhe der Trennwand größer als jene eines Wicklungsfachs ist.
  9. Hochfrequenz-Schlitztransformator gemäß Anspruch 8, welcher dadurch gekennzeichnet ist, dass, im Bezug auf die Mittellücke, eine Anzahl von Wicklungen der innersten ersten Wicklungen (P1, P-1) gleich ist, eine Anzahl von Wicklungen der innersten zweiten Wicklungen (S1, S-1) gleich ist, eine Anzahl von Wicklungen der äußersten zweiten Wicklungen (S2, S-2) gleich ist und ein Wicklungsverhältnis zwischen den innersten (P1, P-1) ersten Wicklungen und äußersten (P2, P-2) ersten Wicklungen 1,3:1 oder höher ist.
  10. Hochfrequenz-Schlitztransformator gemäß Anspruch 9, welcher dadurch gekennzeichnet ist, dass die innersten ersten Wicklungen (P1) und (P-1) parallel geschaltet sind, dass die äußersten ersten Wicklungen (P2) und (P-2) parallel geschaltet sind, dass die innersten zweiten Wicklungen (S1) und (S-1) parallel geschaltet sind und dass die äußersten zweiten Wicklungen (S2) und (S-2) parallel geschaltet sind.
  11. Hochfrequenz-Schlitztransformator gemäß Anspruch 10, welcher dadurch gekennzeichnet ist, dass die parallel geschalteten innersten ersten Wicklungen (P1) und (P-1) in Reihe mit den parallel geschalteten äußersten ersten Wicklungen (P2) und (P-2) geschaltet sind und dass die parallel geschalteten innersten zweiten Wicklungen (S1) und (S-1) in Reihe mit den parallel geschalteten äußersten zweiten Wicklungen (S2) und (S-2) geschaltet sind.
  12. Hochfrequenz-Schlitztransformator gemäß Anspruch 2, welcher dadurch gekennzeichnet ist, dass eine zweite Hilfswicklung in mehr als einem Schlitz der Schlitze gewickelt ist, wo die zweiten Wicklungen (S1...Sn, S-1...S-n) gewickelt sind.
EP98917775A 1997-06-13 1998-04-30 Geschlitzter transformator Expired - Lifetime EP0918342B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR9724711 1997-06-13
KR1019970024711A KR100302951B1 (ko) 1997-06-13 1997-06-13 트랜스
PCT/KR1998/000109 WO1998057339A1 (fr) 1997-06-13 1998-04-30 Transformateur a fentes

Publications (3)

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EP0918342A1 EP0918342A1 (de) 1999-05-26
EP0918342A4 EP0918342A4 (de) 2000-08-16
EP0918342B1 true EP0918342B1 (de) 2003-08-27

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EP (1) EP0918342B1 (de)
JP (1) JP3251303B2 (de)
KR (1) KR100302951B1 (de)
AT (1) ATE248428T1 (de)
DE (1) DE69817508D1 (de)
WO (1) WO1998057339A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN1914698B (zh) * 2004-01-30 2010-05-05 Tdk株式会社 线圈及线圈用骨架

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KR20000050860A (ko) * 1999-01-15 2000-08-05 전주범 트랜스포머의 코일 권취구조
JP4876767B2 (ja) * 2006-08-11 2012-02-15 株式会社村田製作所 トランス
JP4706736B2 (ja) 2008-08-12 2011-06-22 Ｔｄｋ株式会社 コイル用ボビン、コイル巻線、及びコイル部品
JP4760874B2 (ja) 2008-08-12 2011-08-31 Ｔｄｋ株式会社 コイル巻線、及びコイル部品
DE102013009588A1 (de) * 2012-06-14 2013-12-19 Robert Bosch Gmbh Transformator und Verfahren zur Anbringung von Wicklungen
KR101456525B1 (ko) * 2013-11-21 2014-11-03 국립대학법인 울산과학기술대학교 산학협력단 양방향 고주파 변압기
DE102017211400B4 (de) * 2017-07-04 2019-01-31 Richard Wolf Gmbh Schallwellenbehandlungsgerät
KR102286623B1 (ko) * 2021-04-26 2021-08-05 주식회사 엠에스티테크 코일 부품 및 그 제조방법

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DE3129381A1 (de) * 1981-07-25 1983-02-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltnetzteil-transformator, insbesondere fuer einen fernsehempfaenger
JPS63175405A (ja) * 1987-01-14 1988-07-19 Tdk Corp 絶縁パルストランス
JPH069463Y2 (ja) * 1987-08-03 1994-03-09 株式会社村田製作所 変圧器
JPH01108917U (de) * 1988-01-18 1989-07-24
DE3824037A1 (de) * 1988-07-15 1990-01-18 Thomson Brandt Gmbh Transformator fuer ein schaltnetzteile
DE3918905A1 (de) * 1989-06-09 1990-12-13 Grundig Emv Diodensplit-transformator mit einlagiger zylinderspule als primaerwicklung
JP3130200B2 (ja) * 1994-04-12 2001-01-31 松下電器産業株式会社 トランス

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1914698B (zh) * 2004-01-30 2010-05-05 Tdk株式会社 线圈及线圈用骨架

Also Published As

Publication number Publication date
WO1998057339A1 (fr) 1998-12-17
EP0918342A1 (de) 1999-05-26
ATE248428T1 (de) 2003-09-15
DE69817508D1 (de) 2003-10-02
JP3251303B2 (ja) 2002-01-28
EP0918342A4 (de) 2000-08-16
KR19990001403A (ko) 1999-01-15
KR100302951B1 (ko) 2001-11-30

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