EP0024319B1 - Process for making e-shaped core laminations and i-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps - Google Patents
Process for making e-shaped core laminations and i-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps Download PDFInfo
- Publication number
- EP0024319B1 EP0024319B1 EP80104497A EP80104497A EP0024319B1 EP 0024319 B1 EP0024319 B1 EP 0024319B1 EP 80104497 A EP80104497 A EP 80104497A EP 80104497 A EP80104497 A EP 80104497A EP 0024319 B1 EP0024319 B1 EP 0024319B1
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- EP
- European Patent Office
- Prior art keywords
- shaped
- shaped core
- punched
- accordance
- outer legs
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- 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.)
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Classifications
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- 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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
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- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
Definitions
- the invention relates to a method for producing E-shaped core sheets and matching I-shaped return sheets of a choke or a transformer between their outer legs, in particular for use as a ballast for gas discharge lamps.
- a sheet metal cut for a jacket core is also known, which is formed from E-shaped core sheets and I-shaped backing sheets, the I-shaped backing sheets being inserted between the legs of the E-shaped core sheets.
- the aim here is to enclose a jacket core without regard to the lamella shape by means of the housing jacket and bottom in such a way that no magnetic scatter occurs, and to press the lamellae firmly against one another.
- the invention has for its object to design the manufacturing process for the lamellae in such a way that not only the E-shaped core plate and the I-shaped backing plate are punched with little or no waste, but the lamellae can be arranged in the magnetic circuit in such a way that the air gap can be adjusted as required.
- This object is achieved in that, according to the invention, two rows of E-shaped core sheets are punched out with the open sides opposite and adjacent to one another and offset from one another in such a way that the ends of the adjacent outer legs of two adjacent E-shaped core sheets at the end of the middle leg of the opposite, Staggered E-shaped core sheets rest and the I-shaped backing sheets are punched out of the free spaces created between the outer legs and the middle legs of the opposite E-shaped core sheets.
- the I-shaped yoke plates are inserted between the outer legs of the E-shaped core plates.
- the two recesses on them can be punched out with a single stamp, which also achieves a more stable design of this tool part. Furthermore, the advantage of the stamping process is that, in addition to the two recesses, a recess in the middle leg of the E-shaped core sheet, which serves to accommodate an air gap insert, can be punched out by a corresponding design of the stamp.
- a method for producing E-shaped core sheets and two L-shaped yoke sheets inserted between their legs, in which two rows of E-shaped core sheets are punched out with the open sides opposite one another (DE-A No. 2638780).
- This known design of the E-shaped core plate and the L-shaped yoke plates has the disadvantage that the laminated core consists of three parts and therefore does not have sufficient strength since the L-shaped middle parts can be tipped over.
- the stamping method according to the invention can advantageously be designed in such a way that the I-shaped yoke plate is made longer than the free space between the outer legs of the E-shaped core plate. This ensures that the package of t-shaped yoke plates under tension between the outer legs can be inserted.
- the same goal can also be achieved by punching out the ends of the I-shaped yoke plate with a bevel, but with the additional advantage that the introduction of the I-packet between the outer legs of the E-packet is facilitated.
- the stamping method according to the invention is preferably used to produce a flat design of a choke, with no waste of iron material occurring.
- cases are possible that require a higher design of the throttle without changing the width.
- the sum of the lengths of the middle leg and the outer leg of the E-shaped core sheet in relation to the free space for punching out the I-shaped return sheet is greater than the length of the I-shaped return sheet, which results in a slight drop in iron material .
- a major advantage of the punching method according to the invention is that when an air gap is required between the middle leg of the E-shaped core plate and the I-shaped back plate as a result of the shortening of the middle leg, the outer leg is lengthened by the amount of the air gap, which means that there is no additional Iron material an enlarged changing room is formed.
- FIG. 2 shows how the E-shaped core sheets 1 and the I-shaped backing sheets 2 for the choke according to FIG. 1 are obtained from a sheet metal strip without waste.
- the E-shaped core sheets 1 are arranged in relation to one another and also offset such that one end 10 of the outer legs 6 of two E-shaped core sheets 1 rests against the end of the middle leg 3 of the E-shaped core sheet 1 facing one another.
- two I-shaped yoke sheets 2 are obtained by punching out the spaces located between the outer legs 6 and the middle leg 3.
- the ends of the I-shaped yoke plates 2 have a bevel 11, which naturally returns as a bevel 12 on the E-shaped core plate 1, but without being of practical importance here.
- Fig. 4 shows the arrangement of the E-shaped core plate 1 and the I-shaped yoke plates 2 in the low-waste stamping process.
- the sum of the lengths from the middle part 3 and the outer leg 6 of the E-shaped core plate 1, based on the free space for punching out the I-shaped return plate, is greater than the length of the I-shaped return plate, as a result of which the waste A of iron material occurs.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture Of Motors, Generators (AREA)
- Regulation Of General Use Transformers (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Herstellen E-förmiger Kernbleche und zwischen deren Aussenschenkel passender I-förmiger Rückschlussbleche einer Drossel oder eines Transformators, insbesondere für die Verwendung als Vorschaltgerät für Gasentladungslampen.The invention relates to a method for producing E-shaped core sheets and matching I-shaped return sheets of a choke or a transformer between their outer legs, in particular for use as a ballast for gas discharge lamps.
Mit dem abfallosen Herstellen der E-förmigen Kernbleche und der I-förmigen Rückschlussbleche für Mantelkerne nach DIN 41300, Bl. 2, ist bereits ein Stanzverfahren bekannt, bei dem zwei E-förmige Kernbleche mit den Schenkeln derart gegeneinander gekehrt sind, dass zwei I-förmige Rückschlussbleche durch Ausstanzen der zwischen den Schenkeln befindlichen Räume gebildet werden. Dieser Blechschnitt lässt sich zwar ohne Stanzabfall herstellen, jedoch ist nachteilig, dass der Luftspalt zwischen dem Mittelschenkel der E-förmigen Kernbleche und den I-förmigen Rückschlussblechen durch die Festlegung im Stanzwerkzeug eine bestimmte Grösse hat. Es fehlt damit die Möglichkeit, die Luftspaltgrösse zwecks Ausschaltung von Fertigungstoleranzen auf einen gewünschten Wert einzustellen. Somit ist es auch nicht möglich, mit diesem bekannten Stanzverfahren bei optimaler Ausnutzung des Wickelraumes den einer beliebigen Impedanz zugeordneten Luftspalt zu erzeugen. Selbst mit dem hohen Aufwand von mehreren verschiedenen Stanzwerkzeugen liesse sich nur eine grobe Abstufung erreichen. Ausserdem führt das Ausstanzen des für jede Wicklung erforderlichen Luftspaltes zu einem zusätzlichen Fertigungsaufwand, der bei den hohen Lohnkosten nicht tragbar ist. Es wäre zwar möglich, Luftspalteinlagen zwischen den Enden der Aussenschenkel des E-förmigen Kernblechs und den Enden des I-förmigen Rückschlussbleches anzuordnen. Das erfordert jedoch nicht nur eine aufwendigere Montageanordnung für den Zusammenhalt der E- und 1-Lamellen,sondern als Folge der äusseren Luftspalte entsteht auch ein magnetischer Streufluss, der zu störenden Brummgeräuschen führen kann.With the waste-free production of the E-shaped core sheets and the I-shaped yoke sheets for jacket cores according to DIN 41300,
Aus der OE-B Nr. 294270 ist auch ein Blechschnitt für einen Mantelkern bekannt, der aus E-förmigen Kernblechen und I-förmigen Rückschlussblechen gebildet wird, wobei die I-förmigen Rückschlussbleche zwischen die Schenkel der E-förmigen Kernbleche passend eingeschoben werden. Hier wird angestrebt, einen Mantelkern ohne Rücksicht auf die Lamellenform mittels Gehäusemantel und Boden derart zu umschliessen, dass keine magnetische Streuung auftritt, und die Lamellen fest gegeneinander zu pressen.From OE-B No. 294270 a sheet metal cut for a jacket core is also known, which is formed from E-shaped core sheets and I-shaped backing sheets, the I-shaped backing sheets being inserted between the legs of the E-shaped core sheets. The aim here is to enclose a jacket core without regard to the lamella shape by means of the housing jacket and bottom in such a way that no magnetic scatter occurs, and to press the lamellae firmly against one another.
Der Erfindung liegt die Aufgabe zugrunde, das Herstellungsverfahren für die Lamellen derart zu gestalten, dass nicht nur das E-förmige Kernblech und das I-förmige Rückschlussblech abfallos oder abfallarm gestanzt werden, sondern die Lamellen im magnetischen Kreis derart angeordnet werden können, dass der Luftspalt nach Bedarf eingestellt werden kann. Diese Aufgabe wird gelöst, indem gemäss der Erfindung zwei Reihen E-förmiger Kernbleche mit den offenen Seiten gegenüber- und aneinanderliegend und derart versetzt zueinander ausgestanzt werden, dass die Enden der aneinanderliegenden Aussenschenkel zweier benachbarter E-förmiger Kernbleche an dem Ende des Mittelschenkels des gegenüberliegenden, versetzten E-förmigen Kernbleches anliegen und aus den zwischen den Aussenschenkeln und den Mittelschenkeln der gegenüberliegenden E-förmigen Kernbleche entstehenden freien Räumen die I-förmigen Rückschlussbleche ausgestanzt werden.The invention has for its object to design the manufacturing process for the lamellae in such a way that not only the E-shaped core plate and the I-shaped backing plate are punched with little or no waste, but the lamellae can be arranged in the magnetic circuit in such a way that the air gap can be adjusted as required. This object is achieved in that, according to the invention, two rows of E-shaped core sheets are punched out with the open sides opposite and adjacent to one another and offset from one another in such a way that the ends of the adjacent outer legs of two adjacent E-shaped core sheets at the end of the middle leg of the opposite, Staggered E-shaped core sheets rest and the I-shaped backing sheets are punched out of the free spaces created between the outer legs and the middle legs of the opposite E-shaped core sheets.
Zur Bildung des magnetischen Kreises werden die I-förmigen Rückschlussbleche zwischen die Aussenschenkel der E-förmigen Kernbleche passend eingeschoben. Am unteren und äusseren Teil der Aussenschenkel der E-förmigen Kernbleche befinden sich Ausnehmungen, in die nach Beendigung der Paketierung der Lamellen in bekannter Weise eine Klemmschiene mit ihren umgebogenen Längsrändern eingreifen kann.To form the magnetic circuit, the I-shaped yoke plates are inserted between the outer legs of the E-shaped core plates. On the lower and outer part of the outer legs of the E-shaped core sheets there are recesses into which a clamping rail with its bent longitudinal edges can engage in a known manner after the packaging of the slats has ended.
Dadurch, dass bei dem erfindungsgemässen Stanzverfahren die Aussenkanten der Aussenschenkel gegeneinander anliegen, können die beiden Ausnehmungen an ihnen mit einem einzigen Stempel ausgestanzt werden, womit auch eine stabilere Auslegung dieses Werkzeugteiles erzielt wird. Weiterhin wird mit dem Stanzverfahren der Vorteil erzielt, dass durch eine entsprechende Ausbildung des Stempels ausser den beiden Ausnehmungen zusätzlich noch eine Ausnehmung im Mittelschenkel des E-förmigen Kernbleches, die zur Aufnahme einer Luftspalteinlage dient, ausgestanzt werden kann.Because the outer edges of the outer legs lie against one another in the punching method according to the invention, the two recesses on them can be punched out with a single stamp, which also achieves a more stable design of this tool part. Furthermore, the advantage of the stamping process is that, in addition to the two recesses, a recess in the middle leg of the E-shaped core sheet, which serves to accommodate an air gap insert, can be punched out by a corresponding design of the stamp.
Zum Herstellen E-förmiger Kernbleche und zweier zwischen deren Schenkel eingelegter L-förmiger Rückschlussbleche ist auch schon ein Verfahren bekannt, bei dem zwei Reihen E-förmiger Kernbleche mit den offenen Seiten gegenüber- und aneinanderliegend ausgestanzt werden (DE-A Nr. 2638780). Bei diesem Verfahren übergreifen die Enden der aneinanderliegenden Aussenschenkel von zwei benachbarten E-förmigen Kernblechen sich gegenseitig, und der zwischen den Aussenschenkeln über dem Mittelschenkel eines E-förmigen Kernblechs freibleibende Raum wird von den beiden zu einem Rechteck zusammengelegten L-förmigen Rückschlussblechen ausgefüllt. Diese bekannte Gestaltung des E-förmigen Kernbleches und der L-förmigen Rückschlussbleche hat den Nachteil, dass das Blechpaket aus drei Teilen besteht und daher keine ausreichende Festigkeit aufweist, da die L-förmigen mittleren Teile umkippbar sind.A method is also already known for producing E-shaped core sheets and two L-shaped yoke sheets inserted between their legs, in which two rows of E-shaped core sheets are punched out with the open sides opposite one another (DE-A No. 2638780). In this method, the ends of the adjoining outer legs of two adjacent E-shaped core sheets overlap each other, and the space left between the outer legs over the middle leg of an E-shaped core sheet is filled by the two L-shaped yoke sheets folded into a rectangle. This known design of the E-shaped core plate and the L-shaped yoke plates has the disadvantage that the laminated core consists of three parts and therefore does not have sufficient strength since the L-shaped middle parts can be tipped over.
Das Stanzverfahren gemäss der Erfindung kann vorteilhaft derart gestaltet werden, dass das I-förmige Rückschlussblech länger gemacht wird als der freie Raum zwischen den Aussenschenkeln des E-förmigen Kernbleches. Damit wird erreicht, dass das Paket der t-förmigen Rückschlussbleche unter Spannung zwischen die Aussenschenkel eingeschoben werden kann. Das gleiche Ziel kann auch durch Ausstanzen der Enden des I-förmigen Rückschlussbleches mit einer Abschrägung erreicht werden, jedoch mit dem zusätzlichen Vorteil, dass die Einführung des I-Paketes zwischen die Aussenschenkel des E-Paketes erleichtert wird.The stamping method according to the invention can advantageously be designed in such a way that the I-shaped yoke plate is made longer than the free space between the outer legs of the E-shaped core plate. This ensures that the package of t-shaped yoke plates under tension between the outer legs can be inserted. The same goal can also be achieved by punching out the ends of the I-shaped yoke plate with a bevel, but with the additional advantage that the introduction of the I-packet between the outer legs of the E-packet is facilitated.
In bestimmten Fällen kann es von Nutzen sein, den Raum für die Unterbringung der Wicklung zu vergrössern oder auch zu verkleinern. Diese Aufgabe wird dadurch gelöst, dass die Breite des I-förmigen Rückschlussbleches vergrössert oder verkleinert wird. Beim Ausstanzen wird damit eine grössere oder kleinere Fensterhöhe zwischen den Aussenschenkeln und dem Mittelschenkel des E-förmigen Kernbleches erreicht, ohne dass Abfall an Eisenmaterial entsteht.In certain cases it can be useful to enlarge or reduce the space for the winding. This object is achieved in that the width of the I-shaped yoke plate is increased or decreased. When punching out, a larger or smaller window height between the outer legs and the middle leg of the E-shaped core sheet is achieved without waste iron material.
Das Stanzverfahren gemäss der Erfindung dient bevorzugt zum Herstellen einer flachen Bauform einer Drossel, wobei kein Abfall an Eisenmaterial auftritt. Es sind jedoch Fälle möglich, die eine höhere Bauform der Drossel erfordern, ohne die Breite zu verändern. Dies hat zur Folge, dass die Summe der Längen des Mittelschenkels und des Aussenschenkels des E-förmigen Kernbleches bezogen auf den freien Raum zur Ausstanzung des I-förmigen Rückschlussbleches grösser ist als die Länge des I-förmigen Rückschlussbleches, wodurch ein geringfügiger Abfall an Eisenmaterial entsteht.The stamping method according to the invention is preferably used to produce a flat design of a choke, with no waste of iron material occurring. However, cases are possible that require a higher design of the throttle without changing the width. As a result, the sum of the lengths of the middle leg and the outer leg of the E-shaped core sheet in relation to the free space for punching out the I-shaped return sheet is greater than the length of the I-shaped return sheet, which results in a slight drop in iron material .
Ein wesentlicher Vorteil des Stanzverfahrens gemäss der Erfindung besteht auch darin, dass bei Bedarf eines Luftspaltes zwischen dem Mittelschenkel des E-förmigen Kernbleches und dem I-förmigen Rückschlussblech als Folge der Kürzung des Mittelschenkels sich der Aussenschenkel um den Betrag des Luftspaltes verlängert, wodurch ohne zusätzliches Eisenmaterial ein vergrösserter Wickelraum gebildet wird.A major advantage of the punching method according to the invention is that when an air gap is required between the middle leg of the E-shaped core plate and the I-shaped back plate as a result of the shortening of the middle leg, the outer leg is lengthened by the amount of the air gap, which means that there is no additional Iron material an enlarged changing room is formed.
Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus der folgenden Beschreibung einiger Ausführungsbeispiele. Es zeigen:
- Fig. 1 eine Drossel mit nach dem Verfahren gemäss der Erfindung hergestellten Kern- und Rückschlussblechen in einem schematischen Schnitt,
- Fig. 2 die Anordnung der E-Kernbleche und der I-Rückschlussbleche dieser Drossel bei dem abfallosen Stanzverfahren gemäss der Erfindung,
- Fig. 3 ein mit dem erfindungsgemässen Verfahren hergestelltes E-förmiges Kernblech und ein I-förmiges Rückschlussblech mit abgeschrägten Enden, und
- Fig. 4 die Anordnung der E-Kernbleche und der I-Rückschlussbleche bei dem abfallarmen Stanzverfahren gemäss der Erfindung.
- 1 shows a throttle with core and yoke plates produced by the method according to the invention in a schematic section,
- 2 shows the arrangement of the E-core sheets and the I-yoke sheets of this choke in the waste-free punching method according to the invention,
- 3 shows an E-shaped core sheet produced with the method according to the invention and an I-shaped return sheet with bevelled ends, and
- Fig. 4 shows the arrangement of the E-core sheets and the I-yoke sheets in the low-waste stamping process according to the invention.
Fig. 2 lässt erkennen, wie die E-förmigen Kernbleche 1 und die I-förmigen Rückschlussbleche 2 für die Drossel nach Fig. 1 abfallos aus einem Blechstreifen gewonnen werden. Zur Erzielung des abfallosen Stanzens sind die E-förmigen Kernbleche 1 gegeneinander und auch derart versetzt angeordnet, dass je ein Ende 10 der Aussenschenkel 6 zweier E-förmiger Kernbleche 1 am Ende des Mittelschenkels 3 des gegeneinander gekehrten E-förmigen Kernbleches 1 anliegt. Bei dieser versetzten Anordnung der gegeneinander weisenden E-förmigen Kernbleche 1 fallen durch Ausstanzen der zwischen den Aussenschenkeln 6 und dem Mittelschenkel 3 befindlichen Räume jeweils zwei I-förmige Rückschlussbleche 2 an.FIG. 2 shows how the E-shaped
Weiterhin ist in Fig. 2 dargestellt, dass die Ausnehmungen 9 an den Aussenschenkeln 6 und die Nut 5 im Mittelschenkel 3, die zur Aufnahme einer Luftspalteinlage 4a dient, als Folge der versetzten Anordnung der E-förmigen Kernbleche 1 nur mit einem einzigen Stempel ausstanzbar sind.Furthermore, it is shown in Fig. 2 that the
Gemäss Fig. 3 weisen zum erleichterten Einführen und vergrösserten Verpressen der I-Pakete zwischen den Aussenschenkeln 6 des E-Paketes die Enden der I-förmigen Rückschlussbleche 2 eine Abschrägung 11 auf, die naturgemäss als Abschrägung 12 an dem E-förmigen Kernblech 1 wiederkehrt, ohne hier jedoch praktisch von Bedeutung zu sein.According to FIG. 3, for easier insertion and enlarged pressing of the I-packets between the
Fig. 4 zeigt die Anordnung des E-förmigen Kernbleches 1 und der I-förmigen Rückschlussbleche 2 beim abfallarmen Stanzverfahren. Die Summe der Längen aus dem Mitteischenkei 3 und dem Aussenschenkel 6 des E-förmigen Kernbleches 1 bezogen auf den freien Raum zum Ausstanzen des I-förmigen Rückschlussbleches ist grösser als die Länge des I-förmigen Rückschlussbleches, wodurch der Abfall A an Eisenmaterial zustandekommt.Fig. 4 shows the arrangement of the
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80104497T ATE3480T1 (en) | 1979-08-21 | 1980-07-30 | PROCESS FOR MANUFACTURING E-SHAPED CORE LAINS AND I-SHAPED RETURN PLATES OF A CHOCK OR TRANSFORMER, ESPECIALLY FOR GAS DISCHARGE LAMPS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2933781 | 1979-08-21 | ||
DE2933781A DE2933781C2 (en) | 1979-08-21 | 1979-08-21 | Process for the production of E-shaped core sheets and I-shaped return yoke sheets for a choke or a transformer, in particular for gas discharge lamps |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0024319A1 EP0024319A1 (en) | 1981-03-04 |
EP0024319B1 true EP0024319B1 (en) | 1983-05-18 |
Family
ID=6078926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80104497A Expired EP0024319B1 (en) | 1979-08-21 | 1980-07-30 | Process for making e-shaped core laminations and i-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps |
Country Status (21)
Country | Link |
---|---|
EP (1) | EP0024319B1 (en) |
JP (1) | JPS5633809A (en) |
AR (1) | AR222402A1 (en) |
AT (1) | ATE3480T1 (en) |
AU (1) | AU540139B2 (en) |
BR (1) | BR8005257A (en) |
CS (1) | CS236771B2 (en) |
DD (1) | DD153016A5 (en) |
DE (1) | DE2933781C2 (en) |
EG (1) | EG13908A (en) |
ES (1) | ES8103877A1 (en) |
FI (1) | FI71210C (en) |
GR (1) | GR69693B (en) |
HU (1) | HU179890B (en) |
IN (1) | IN152290B (en) |
PL (1) | PL125117B1 (en) |
RO (1) | RO83440B (en) |
SU (1) | SU1083926A3 (en) |
UA (1) | UA7590A1 (en) |
YU (1) | YU39881B (en) |
ZA (1) | ZA805082B (en) |
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JPS6032419A (en) * | 1983-08-01 | 1985-02-19 | Nec Corp | Power amplifier |
DE3402036C1 (en) * | 1984-01-21 | 1985-07-11 | Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach | Method for producing E-shaped core laminates and I-shaped magnetic return path laminates of an inductor or of a transformer, especially for gas-discharge lamps |
SE8404231L (en) * | 1984-08-24 | 1986-02-25 | Kanthal Ab | SET TO MAKE SLEEPING METAL FILM ELEMENTS |
EP0571242A1 (en) * | 1992-05-21 | 1993-11-24 | Acec Ballasts | Magnetic circuit with airgap, particularly for ballasts for discharge lamps and its manufacturing method |
DE4228642A1 (en) * | 1992-08-28 | 1994-03-03 | Tridonic Bauelemente Gmbh Dorn | Choke impedance adjustment method |
DE19645098C2 (en) * | 1996-11-01 | 2000-09-21 | Vossloh Schwabe Gmbh | Choke and process for its manufacture |
ES2155806B1 (en) * | 1999-10-07 | 2001-10-16 | Ventura Ind | PROCEDURE FOR DRILLING CONSTITUTIVE LAYERS OF MAGNETIC NUCLEES IN THE FORM OF "E" AND "T". |
DE102004012436B4 (en) * | 2004-03-12 | 2006-04-20 | Vossloh-Schwabe Deutschland Gmbh | Core sheet for inductive component |
JP4961163B2 (en) * | 2006-05-08 | 2012-06-27 | ラピスセミコンダクタ株式会社 | DC coupled amplifier circuit |
DE102008004555B4 (en) * | 2008-01-15 | 2010-07-29 | Vossloh-Schwabe Deutschland Gmbh | Core sheet set for inductive components |
DE102011116861A1 (en) | 2011-10-25 | 2013-04-25 | Epcos Ag | Electronic component for guiding a magnetic field |
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DE159059C (en) * | ||||
DE219466C (en) * | ||||
US2235425A (en) * | 1938-12-09 | 1941-03-18 | Western Electric Co | Electromagnetic core |
GB671823A (en) * | 1948-02-06 | 1952-05-14 | British Thomson Houston Co Ltd | Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers |
DE1438657A1 (en) * | 1962-12-07 | 1969-01-16 | Waasner B | Core sheet for transformers |
DE1638944A1 (en) * | 1967-02-09 | 1970-05-14 | Waasner B | Core sheet with two sheet metal parts |
DE1613628A1 (en) * | 1967-03-20 | 1970-07-30 | Blum Eisen & Metallind | Two-part iron core, especially for transformers |
DE6936329U (en) * | 1968-09-24 | 1973-11-08 | Elektrokovina Tovarna Elektrok | REACTOR OR TRANSFORMER. |
AT294270B (en) * | 1969-07-14 | 1971-11-10 | Berndeisel & Co Johann | Chokes for discharge lamps, in particular fluorescent lamps |
DE7005834U (en) * | 1970-02-19 | 1970-05-21 | Bbc Brown Boveri & Cie | CORE PLATE FOR REACTORS OR TRANSFORMERS. |
DE2139010A1 (en) * | 1971-08-04 | 1973-03-08 | Kammeyer Karl | DIVIDED SHEET METAL SECTION FOR TRANSFORMERS |
DE2309727C3 (en) * | 1973-02-27 | 1979-05-03 | Fa. Hermann Schwabe, 7067 Urbach | Process for the production of chokes or transformers to be used in particular as ballasts for gas discharge lamps |
DE2638780A1 (en) * | 1975-09-03 | 1977-03-17 | Leuenberger H | Shell-type magnetic core for transformer or induction coil - is built entirely of L-shaped laminations |
HU172371B (en) * | 1976-06-10 | 1978-08-28 | Hiradastechnikai Anyagok Gyara | Laminated core sheets to communication technique and electronic small transformers, as well as, method for maunting iron cores of these small transformers and these small transformers |
DE2652171A1 (en) * | 1976-11-16 | 1978-05-24 | Bertos Ag | CONTROL UNIT ETC. WITH E- AND I-SHAPED CORE PLATES |
DE2711855A1 (en) * | 1977-03-18 | 1978-09-21 | Erich Grau | Transformer core sheet metal shell construction - has transverse yoke partitioned by joint between outer limbs of three-limb design |
-
1979
- 1979-08-21 DE DE2933781A patent/DE2933781C2/en not_active Expired
-
1980
- 1980-07-30 EP EP80104497A patent/EP0024319B1/en not_active Expired
- 1980-07-30 AT AT80104497T patent/ATE3480T1/en not_active IP Right Cessation
- 1980-08-06 GR GR62619A patent/GR69693B/el unknown
- 1980-08-12 HU HU80802003A patent/HU179890B/en unknown
- 1980-08-19 PL PL1980226317A patent/PL125117B1/en unknown
- 1980-08-19 ZA ZA00805082A patent/ZA805082B/en unknown
- 1980-08-20 SU SU802970701A patent/SU1083926A3/en active
- 1980-08-20 AR AR282223A patent/AR222402A1/en active
- 1980-08-20 UA UA2970701A patent/UA7590A1/en unknown
- 1980-08-20 BR BR8005257A patent/BR8005257A/en not_active IP Right Cessation
- 1980-08-20 DD DD80223411A patent/DD153016A5/en unknown
- 1980-08-20 EG EG512/80A patent/EG13908A/en active
- 1980-08-21 CS CS805736A patent/CS236771B2/en unknown
- 1980-08-21 JP JP11410080A patent/JPS5633809A/en active Pending
- 1980-08-21 YU YU2092/80A patent/YU39881B/en unknown
- 1980-08-21 ES ES494405A patent/ES8103877A1/en not_active Expired
- 1980-08-21 RO RO102016A patent/RO83440B/en unknown
- 1980-08-21 AU AU61613/80A patent/AU540139B2/en not_active Expired
- 1980-08-21 FI FI802648A patent/FI71210C/en not_active IP Right Cessation
- 1980-09-11 IN IN1041/CAL/80A patent/IN152290B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2933781C2 (en) | 1982-10-07 |
BR8005257A (en) | 1981-03-04 |
ES494405A0 (en) | 1981-03-16 |
UA7590A1 (en) | 1995-09-29 |
DE2933781A1 (en) | 1981-03-26 |
JPS5633809A (en) | 1981-04-04 |
FI71210C (en) | 1986-11-24 |
YU39881B (en) | 1985-04-30 |
ZA805082B (en) | 1981-09-30 |
HU179890B (en) | 1982-12-28 |
PL125117B1 (en) | 1983-03-31 |
YU209280A (en) | 1983-06-30 |
AU6161380A (en) | 1981-04-09 |
ES8103877A1 (en) | 1981-03-16 |
FI71210B (en) | 1986-08-14 |
SU1083926A3 (en) | 1984-03-30 |
FI802648A (en) | 1981-02-22 |
AU540139B2 (en) | 1984-11-01 |
DD153016A5 (en) | 1981-12-16 |
PL226317A1 (en) | 1981-06-19 |
RO83440B (en) | 1984-02-28 |
ATE3480T1 (en) | 1983-06-15 |
CS236771B2 (en) | 1985-05-15 |
EG13908A (en) | 1982-12-31 |
RO83440A (en) | 1984-02-21 |
GR69693B (en) | 1982-07-08 |
AR222402A1 (en) | 1981-05-15 |
EP0024319A1 (en) | 1981-03-04 |
IN152290B (en) | 1983-12-17 |
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