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WO2018228736A1 - Bobine et appareil électrique ou électronique avec une telle bobine - Google Patents

Bobine et appareil électrique ou électronique avec une telle bobine Download PDF

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Publication number
WO2018228736A1
WO2018228736A1 PCT/EP2018/059559 EP2018059559W WO2018228736A1 WO 2018228736 A1 WO2018228736 A1 WO 2018228736A1 EP 2018059559 W EP2018059559 W EP 2018059559W WO 2018228736 A1 WO2018228736 A1 WO 2018228736A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
coil
winding
printed circuit
magnetic core
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.)
Ceased
Application number
PCT/EP2018/059559
Other languages
German (de)
English (en)
Inventor
Jens Friebe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMA Solar Technology AG
Original Assignee
SMA Solar Technology AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMA Solar Technology AG filed Critical SMA Solar Technology AG
Publication of WO2018228736A1 publication Critical patent/WO2018228736A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/0006—Printed inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/003—Printed circuit coils
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/04—Assemblies of printed circuits
    • H05K2201/048—Second PCB mounted on first PCB by inserting in window or holes of the first PCB
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/08—Magnetic details
    • H05K2201/083—Magnetic materials
    • H05K2201/086—Magnetic materials for inductive purposes, e.g. printed inductor with ferrite core
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/366—Assembling printed circuits with other printed circuits substantially perpendicularly to each other

Definitions

  • the invention relates to a simple and inexpensive to produce coil and an electrical or electronic device with such a coil.
  • a coil can be used in particular as part of a transformer, an electric filter, or a current sensor.
  • the invention further relates to an electrical or electronic device with such a coil.
  • US Pat. No. 4,975,671 discloses a coil-type transformer fabricated via a Surface Mount Device (SMD) method.
  • the transformer has first winding sections arranged below an iron core and U-shaped second winding sections arranged above the iron core and electrically connected to one another.
  • the second winding sections include a plurality of U-shaped bent conductors surrounded by and fixed relative to one another by a dielectric body.
  • DE 10154833 A1 discloses a coil with upper conductor tracks formed in an upper metal layer and lower conductor tracks formed in a lower metal layer.
  • the coil includes connecting lines connecting the upper conductive lines to the lower conductive lines, and a magnetic core made of a magnetic material.
  • the magnetic core is embedded in a multilayer printed circuit board of an alternating sequence of metal layers and carrier layers, wherein the printed conductors are provided in the upper and the lower metal layer.
  • US 5166965 A discloses a magnetic flux pole structure in which a plurality of AC / DC converters are connected in series with each other and inductively coupled in a stacked arrangement to a magnetic core.
  • Each converter stage includes a pair of planar coils on opposite sides of a printed circuit board.
  • the printed circuit board comprises a printed circuit board main part and a printed circuit board plug-in part, which run at an angle to each other.
  • a magnetic device with a one-piece toroidal core and at least one flex circuit is known.
  • the flex circuit includes at least one conductive trace that forms at least one turn around the toroidal core.
  • US 2004 0036454 A1 discloses a signal transformer whose secondary windings are formed as conductor tracks on a printed circuit board.
  • the circuit board includes an opening through which a magnetic core passes.
  • the invention has for its object to provide a coil with a closed and integrally formed portion having magnetic core according to the preamble of independent claim 1, which has a high reproducibility of has magnetic parameters and is easy and inexpensive to produce.
  • the invention is further based on the object to show an electrical and electronic device with such a coil.
  • the object of the invention is achieved by a coil having the features of independent claim 1.
  • the dependent claims 1 to 14 are directed to preferred embodiments of the coil.
  • the claim 15 is directed to an electrical or electronic device with such a coil.
  • a coil according to the invention includes
  • the at least one winding has a first winding section and a second winding section.
  • the first winding section is arranged in the form of a conductor track on a first printed circuit board and the second winding section in the form of a conductor track on a second printed circuit board.
  • the conductor track of the first winding section is electrically connected to the conductor track of the second winding section, so that the first winding section, together with the second winding section, results in the at least one winding.
  • the coil is characterized in that the magnetic core has a closed and integrally formed region, wherein the at least one winding circumferentially surrounds the closed and integrally formed region of the magnetic core at least along a portion, and in that the first circuit board and the second circuit board respectively in Form of a rigid circuit board are formed.
  • both circuit boards are fixed relative to each other so that their planes are angled to each other.
  • a coil not according to the invention includes, for example, a magnetic core which, although a closed but multi-piece formed area in which therefore the closed trained area is composed of several core segments.
  • the production of a coil (not according to the invention) is simpler, since the windings can be applied to individual core segments before assembly of the magnetic core. In such a case, the production of the coil can be at least partially, in particular on the winding process, automate.
  • this is not possible with a coil having a magnetic core with a closed and integrally formed portion to be wrapped.
  • both the first and the second winding section are formed in the form of printed conductors on a rigid printed circuit board.
  • Standardized and highly automated production processes for printed circuit board production and further processing can be used to produce the coil, in particular its winding production.
  • the magnetic core has a closed integrally formed region, or when the magnetic core itself is a closed integrally formed magnetic core, which is formed from only one core segment.
  • the tracks on the circuit boards can be designed and manufactured with high reproducibility in terms of their geometry, position and alignment. This leads to a high reproducibility of characteristic magnetic properties of such a coil, in particular its inductance, its stray magnetic field and their capacity of the windings with each other (intra-winding capacity).
  • the high degree of automation in the production of the coil according to the invention not only reduces the specific manufacturing costs of the coil, but also reduces a frequency of errors associated with manual winding of the coil.
  • the first circuit board of the coil has at least one pin-like extension on one edge, which engages in a corresponding recess arranged in the second circuit board.
  • one end of the at least one first winding section lies in a region of the pin-like extension on a surface of the first printed circuit board.
  • the conductor track of the arranged on the first circuit board first winding section - in particular the end - in a region of at least one pin-like extension adjacent to the conductor track of the arranged on the second circuit board second winding section.
  • the first and second winding sections are electrically connected to one another in the region, in particular soldered to one another.
  • the first circuit board has at least one pin-like extension on one edge. However, this does not engage in a recess of the second circuit board, but is as Tab formed and engages in a arranged on the second circuit board connector socket. In this way, the first circuit board is mechanically as well as electrically releasably connected to the second circuit board.
  • connection sockets are known for example as receiving ports for expansion boards in the field of computer electronics and cost-effective due to mass production in various designs.
  • the magnetic core is formed only from the closed and integrally formed region, that is to say from only one core segment.
  • the magnetic core may have, in addition to the closed and integrally formed region, further core segments connected to the region and thus composed of a plurality of core segments.
  • the magnetic core can have none, only one or more magnetically active gaps.
  • the closed and integrally constructed region of the magnetic core may have a magnetic or magnetically active gap, although the region is still geometrically closed.
  • the magnetic core is a sintered magnetic core and the magnetic gap is formed by a plurality of microscopic gaps.
  • the magnetic core may have an outer coating, under which the magnetic gap is arranged, so that the magnetic core is nevertheless "geometrically closed.”
  • the magnetically active gap may also be filled with a non-magnetic material as a spacer, for example with a plastic material.
  • the magnetic core is configured in the form of a ring or a torus, whereby in both cases the magnetic core may include a magnetically active gap or be magnetically gap-free, that is, free of a magnetically active gap.
  • the first printed circuit board is formed with respect to their geometry at least on one side thereof comb-like.
  • the first printed circuit board for this purpose have a transverse web with a plurality of thereof at right angles branching longitudinal webs.
  • the number of branching longitudinal webs depends on the individual geometry of the magnetic core and the application of the coil.
  • the first circuit board U-shaped - that is, with two longitudinal webs - or E-shaped - that is, with three longitudinal webs - be formed and surrounded a cross section of the closed and integrally formed portion of the magnetic core circumferentially on three of four sides.
  • the magnetic core can be mechanically fixed by the first printed circuit board and the second printed circuit board in two dimensions.
  • the magnetic core but at least the closed and integrally formed portion of the magnetic core at least partially enclosed by a tunnel which is bounded by the first and the second circuit board.
  • the magnetic core can be mechanically clamped or fixed even in three dimensions.
  • the plane of the first printed circuit board - possibly also the plane of the further first printed circuit board - is arranged at right angles to the plane of the second printed circuit board.
  • the at least one winding which surrounds the closed and integrally formed region of the magnet core at least in sections surrounds a plurality of windings.
  • Each of the windings has in each case a first and a second winding section.
  • the first winding sections are arranged in the form of conductor tracks on the first printed circuit board and the second winding sections in the form of printed conductors on the second printed circuit board.
  • the conductor tracks associated with the first winding sections are electrically connected to the conductor tracks associated with the second winding sections, such that the first together with the second winding sections result in the plurality of windings surrounding the closed and integrally formed region of the magnetic core at least in sections.
  • the first circuit board and / or the second circuit board are / is formed in an advantageous embodiment, the first circuit board and / or the second circuit board as a multi-layer circuit board.
  • the first and / or the second winding sections are arranged in different positions of the respective printed circuit board.
  • the interconnects are guided to a surface - front and / or back - of the respective board or interconnects in a middle position with on the front and / or back side existing tracks electrically connected.
  • the first printed circuit board in the vicinity of the pin-like extension and with the second printed circuit board in the vicinity of the recess, in which the pin-like extension engages.
  • the electrical connection of arranged in a middle layer trace to one on the surface of the multilayer printed circuit board can be known via vias - done.
  • the first circuit board if appropriate also the second circuit board, may of course also have further conductor tracks, for example for the purpose of electrically contacting further components with the winding of the coil.
  • the first and / or the second printed circuit board additionally has at least one further electrical or electronic component, for example a capacitor and / or a resistor.
  • first and / or the second circuit board has a further pin-like extension, which is designed as a tab for a further connection socket.
  • first printed circuit board and / or the second printed circuit board can be electrically connected to a further component or a further circuit unit.
  • the coil is formed as part of an inductive component, for example as part of a transformer, an electric filter or a current sensor.
  • An inventive electrical or electronic device has at least one coil according to the invention.
  • the electrical or electronic device may in particular be a power converter, for example a rectifier, an inverter or a DC / DC converter. This results in the advantages already mentioned in connection with the coil.
  • Fig. 1a shows a coil according to the invention in a first embodiment in an early stage of manufacture
  • Fig. 1b shows the spool of Fig. 1a at a later stage of manufacture
  • Fig. 2a shows a transformer as an inductive component with two inventive
  • Fig. 2b shows the transformer of Fig. 2a in a plan view. DESCRIPTION OF THE FIGURES
  • a first embodiment of a coil (1) according to the invention is shown in a side view in a not yet fully assembled stage.
  • the coil (1) has a first rigid printed circuit board (2a) with printed conductors (10, 11) arranged thereon and a second rigid printed circuit board (2b) with printed conductors (10, 11) arranged thereon.
  • the first printed circuit board (2 a) as a multi-layer printed circuit board - here: as a 2-layer printed circuit board with conductor tracks 10, 1 1 on a front and on a back of a carrier layer of the multilayer printed circuit board - formed.
  • Some tracks 1 1 of the first circuit board 2a are formed as leads to electrically connect the coil 1 with other components.
  • the first winding sections 3a are formed by the strip conductors 10 shown in solid lines and arranged on the front side of the first printed circuit board 2a.
  • the coil 1 further includes a second rigid printed circuit board 2b - here: in the form of a single-layer printed circuit board with a carrier layer and only one metal layer - with printed conductors 10, 1 1 on the underside of the second printed circuit board 2b.
  • an annular magnetic core 6 is arranged on one of the conductor tracks 10, 1 1 remote from the surface of the second circuit board 2b.
  • the geometry of the first circuit board 2a is substantially U-shaped and includes pin-like extensions 4 on both legs of the "U-shape" which are engageable in corresponding recesses 5 in the second circuit board 5.
  • a plane of the first circuit board 2a is vertical to form a plane of the second rigid circuit board 2b, the pin-like extensions 4 of the first circuit board 2a are inserted into the recesses 5 of the second circuit board 2b to complete the coil 1.
  • first coil sections 3a on the first circuit board 2a adjoin corresponding second ones
  • two remaining ends of the windings are electrically connected to the conductor tracks 1 1 formed as leads.
  • Fig. 1 b results in a mechanically stable arrangement of the coil 1, wherein the magnetic core 6 of the first rigid circuit board 2a and the second rigid circuit board 2b mechanically clamped and thereby fixed.
  • further first printed circuit boards 2a may be provided, which surround the magnetic core 6 at a different area on the circumference.
  • the electrical connection of the coil 1 to another component or a further circuit unit - not shown in FIGS. 1 a and 1 b - takes place via a further pin-shaped extension 7 arranged on the first printed circuit board 2 a and designed as a flat plug to intervene a connection socket 13 and to connect the coil 1 with the further component or the further circuit unit.
  • FIGS. 2 a and 2 b show an inductive component-here a transformer-in an almost completely assembled state in a side view (FIG. 2 a) and in a plan view (FIG. 2 b).
  • Each of the two coils 1 corresponds in many respects to the embodiment of the coil 1 according to the invention shown in FIGS. 1 a and 1 b, for which reason reference is made to the statements there and here only the differences from the first embodiment Embodiment will be described.
  • the geometry of the first printed circuit board 2 a is now "E-shaped." In this case, too, however, one plane of the first printed circuit board 2 a is perpendicular to a plane of FIG A middle longitudinal web of the first printed circuit board 2a is arranged in the assembled state in the inner diameter of the annular magnetic core 6, while the two outer longitudinal webs abut the outer diameter of the magnetic core 6.
  • first winding sections 3a of both coils 1 in FIG Furthermore, the first printed circuit board 2 a contains conductor tracks 1 1 formed as feed lines on a rear side of the first printed circuit board 2 a designed as a multilayer printed circuit board.
  • connection sockets 14 with second winding sections 3b forming conductor tracks 10 of the coils 1 and optionally with other leads forming conductor tracks 1 1 of the second circuit board 2b are electrically connected, for example soldered.
  • the transformer is electrically connected to a further component or a further circuit arrangement via a further pin-like extension 7 designed as a flat plug, which is arranged on an upper side of the first printed circuit board 2a and which is set up to engage in a connecting socket 13.
  • the first printed circuit board 2a and / or the second printed circuit board 2b may comprise further electrical or electronic components. It goes without saying that other geometries of the first printed circuit board 2a shown as "U-shaped" or E-shaped can also be used within the scope of the invention. In the embodiment of the coil 1 according to FIGS.
  • the non-detachable electrical connection of the first winding sections 3a to the second winding sections 3b may be substituted by a releasable electrical connection as shown in Figures 2a and 2b Winding sections 3b also in the form of a non-detachable electrical connection of the winding sections 3a and 3b with each other - for example, a soldering - be realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L'invention concerne une bobine (1) comprenant un noyau magnétique (6) et au moins un enroulement, l'au moins un enroulement comprenant une première section d'enroulement (3a) et une deuxième section d'enroulement (3b), la première section d'enroulement (3a) étant disposée sous la forme d'une ligne conductrice (10) sur une première carte de circuit (2a) et la deuxième section d'enroulement (3b) étant disposée sous la forme d'une ligne conductrice (10) sur une deuxième carte de circuit (2b), et la ligne conductrice (10) de la première section d'enroulement (3a) étant connectée électriquement avec la ligne conductrice (10) de la deuxième section d'enroulement (3b) de telle sorte que la première section d'enroulement (3a) forme ensemble avec la deuxième section d'enroulement (3b) l'au moins un enroulement. Le noyau magnétique (6) présente une zone fermée et formée en une pièce, l'au moins un enroulement entourant la partie fermée et formée en une pièce du noyau magnétique (6) du côté de la périphérie le long d'au moins une section, et la première carte de circuit (2a) et la deuxième carte de circuit (2b) étant formées chacune en tant qu'une carte de circuit rigide et les deux cartes de circuit (2a, 2b) étant fixées l'une à l'autre de telle façon que leurs plans forment un angle l'un par rapport à l'autre.
PCT/EP2018/059559 2017-06-14 2018-04-13 Bobine et appareil électrique ou électronique avec une telle bobine Ceased WO2018228736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017103569.7 2017-06-14
DE202017103569.7U DE202017103569U1 (de) 2017-06-14 2017-06-14 Spule und elektrisches oder elektronisches Gerät mit einer derartigen Spule

Publications (1)

Publication Number Publication Date
WO2018228736A1 true WO2018228736A1 (fr) 2018-12-20

Family

ID=62025832

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/059559 Ceased WO2018228736A1 (fr) 2017-06-14 2018-04-13 Bobine et appareil électrique ou électronique avec une telle bobine

Country Status (2)

Country Link
DE (1) DE202017103569U1 (fr)
WO (1) WO2018228736A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4621814A1 (fr) * 2024-03-19 2025-09-24 Murata Manufacturing Co., Ltd. Bobine de bloc

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962445A (en) * 1955-07-01 1960-11-29 Lignes Telegraph Telephon Rectangular hysteresis loop ferrites
US4975671A (en) 1988-08-31 1990-12-04 Apple Computer, Inc. Transformer for use with surface mounting technology
US5166965A (en) 1991-04-11 1992-11-24 Varian Associates, Inc. High voltage dc source including magnetic flux pole and multiple stacked ac to dc converter stages with planar coils
WO1997025727A1 (fr) * 1996-01-11 1997-07-17 Alliedsignal Inc. Bobine de reactance avec repartition d'entrefer
WO1998011765A2 (fr) * 1996-09-16 1998-03-19 Pdl Electronics Limited Ameliorations concernant les assemblages inducteurs de circuits electroniques
US5774349A (en) 1995-10-16 1998-06-30 Siemens Aktiengesellschaft High-voltage generator
DE10154833A1 (de) 2001-11-08 2003-05-22 Infineon Technologies Ag Induktor und Verfahren zu seiner Herstellung
US20040036454A1 (en) 2002-08-22 2004-02-26 Abb Research Ltd Signal transformer and method for operating such a signal transformer
EP1971193A1 (fr) * 2007-03-16 2008-09-17 HÜTTINGER Elektronik GmbH + Co. KG Composant de plaque conductrice destiné à la fabrication d'inductances planaires à formage de noyau fermé
DE102007058095A1 (de) 2007-12-03 2009-06-04 Robert Bosch Gmbh Leiterplatte mit daran angeschlossenen Kontaktstiften
DE102015107203A1 (de) 2014-05-15 2015-11-19 Analog Devices, Inc. Magnetvorrichtungen und Herstellungsverfahren die Flex-Schaltkreise verwenden

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962445A (en) * 1955-07-01 1960-11-29 Lignes Telegraph Telephon Rectangular hysteresis loop ferrites
US4975671A (en) 1988-08-31 1990-12-04 Apple Computer, Inc. Transformer for use with surface mounting technology
US5166965A (en) 1991-04-11 1992-11-24 Varian Associates, Inc. High voltage dc source including magnetic flux pole and multiple stacked ac to dc converter stages with planar coils
US5774349A (en) 1995-10-16 1998-06-30 Siemens Aktiengesellschaft High-voltage generator
WO1997025727A1 (fr) * 1996-01-11 1997-07-17 Alliedsignal Inc. Bobine de reactance avec repartition d'entrefer
WO1998011765A2 (fr) * 1996-09-16 1998-03-19 Pdl Electronics Limited Ameliorations concernant les assemblages inducteurs de circuits electroniques
DE10154833A1 (de) 2001-11-08 2003-05-22 Infineon Technologies Ag Induktor und Verfahren zu seiner Herstellung
US20040036454A1 (en) 2002-08-22 2004-02-26 Abb Research Ltd Signal transformer and method for operating such a signal transformer
EP1971193A1 (fr) * 2007-03-16 2008-09-17 HÜTTINGER Elektronik GmbH + Co. KG Composant de plaque conductrice destiné à la fabrication d'inductances planaires à formage de noyau fermé
DE102007058095A1 (de) 2007-12-03 2009-06-04 Robert Bosch Gmbh Leiterplatte mit daran angeschlossenen Kontaktstiften
DE102015107203A1 (de) 2014-05-15 2015-11-19 Analog Devices, Inc. Magnetvorrichtungen und Herstellungsverfahren die Flex-Schaltkreise verwenden

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