GB2108769A - Arrangement of terminals on a chip type inductor - Google Patents
Arrangement of terminals on a chip type inductor Download PDFInfo
- Publication number
- GB2108769A GB2108769A GB08225213A GB8225213A GB2108769A GB 2108769 A GB2108769 A GB 2108769A GB 08225213 A GB08225213 A GB 08225213A GB 8225213 A GB8225213 A GB 8225213A GB 2108769 A GB2108769 A GB 2108769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- chip type
- drum portion
- type inductor
- end surface
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 description 13
- 230000004907 flux Effects 0.000 description 8
- 229910000679 solder Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- 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
- H01F17/00—Fixed inductances of the signal type
- H01F17/02—Fixed inductances of the signal type without magnetic core
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
- H01F2027/065—Mounting on printed circuit boards
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The inductor includes a core member having a drum portion on which a coil (10) is wound, and a pair of flanges (5, 6) provided at the opposite ends of the drum portion. Electrodes (9) to which the coil (10) is connected, are securely attached to an outer-facing end surface (7) of one (6) of the flanges and are formed by metal wire pieces square or rectangular in cross-section. <IMAGE>
Description
SPECIFICATION
Chip type inductor
Field of the invention
This invention relates to a chip type inductor adapted for surface-connection with a printed circuit board, and more particularly it pertains to such an inductor which is so designed that the inductor can easily be manufactured, highly reliable connection can be established when the inductor is mounted on a printed circuit board and the characteristics of the inductor can hardly be influenced by the conductors of the printed circuit board.
Description of the prior art
There has heretofore been proposed such a chip type inductor as shown in Figure 1, which uses a drum core comprising a drum portion 1 on which a coil is wound, and a pair of flanges provided at the opposite ends of the drum portion.
In the illustrated conventional chip type inductor, electrodes 3, which are formed by printing silver paste, are provided on the bottom surfaces of the two flanges 2, respectively, and the coil (not shown) wound on the drum portion is connected at the opposite ends thereof to the electrodes 3 by means of soldering.
However, the aforementioned conventional construction wherein the electrodes 3 are provided only on one surface of the respective flanges 2, is disadvantageous in that defective connection tends to occur when the electrodes 3 are soldered to incorporate the inductor in the circuit formed on the board, which leads to lack of reiiability. To obviate such disadvantage, the electrodes 3 should be provided on plural surfaces of the flanges 2 by printing silver paste on outer end surfaces indicated at 2a as well, for example.
Obviously, however, this lowers the working efficiency in forming the electrodes. Generally, an inductor suffers deterioration in the characteristics such as inductance and Q when metal exists in its magnetic circuit, and with a chip type inductor which is miniaturized such that the length of each side thereof is 4 mm or less, difficulties are encountered in an attempt to form electrodes which are free from the abovementioned drawbacks.
To cope with the aforementioned situation, there has also conventionally been proposed such a chip type inductor as shown in Figure 2, wherein electrodes 4, each of which is formed of a metal piece having an L-shaped cross section, are attached to flanges 2 of a drum core by means of an adhesive agent. However, such an arrangement is disadvantageous in that troublesome working procedures such as shaping and cutting are involved in forming the small metal pieces, and the metal pieces should be so worked that their surfaces to be adhered to a printed circuit board are made to be flat, which leads to poor workability. The electrodes 4 should be attached to the other peripheries of the core flanges in order to permit the chip type inductor to be soldered to the printed circuit board, but since the metal pieces are thin, it is difficult to prevent magnetic flux from being influenced.Moreover, there tends to occur an accident that the coil connected to the electrodes 4 is cut off by burr formed when the metal pieces are worked.
Summary of the invention
Accordingly, it is an object of the present invention to provide a chip type inductor which is free from the aforementioned drawbacks of the prior art, of improved workability, easy to manufacture, highly reliable in connection, and less influenced by eddy current which tends to be caused by conductors of a printed circuit board when the inductor is mounted on the printed circuit board.
Briefly, according to the present invention, there is provided a chip type inductor which comprises a core member having a drum portion on which a coil is wound, and flanges provided at the opposite ends of the drum portion; and electrodes each formed by a metal wire piece of a square cross-section, the electrodes being secured to the core member with at least one longitudinal surface of each metal wire piece being securely attached to that surface of one of the flanges which is opposite to the drum portion, wherein the coil wound on the drum portion is connected to the electrodes.
More specifically, according to the present invention, there is provided a chip type inductor which comprises a core member having a drum portion on which a coil is wound, and flanges provided at the opposite ends of the drum portion; and electrodes each formed by a metal wire piece having a square cross-section, the electrodes being secured to the core member with a longitudinal surface of each metal wire piece being securely attached to the outer end surface of one of the flanges, wherein the coil wound on the drum portion is connected to the electrodes.
Furthermore, according to the present invention, there is provided a chip type inductor which comprises a core member having a drum portion on which a coil is wound, and flanges provided at the opposite ends of the drum portion, one of the flanges having notched portions formed in the opposite end surfaces thereof in such a manner as to be opened at the outer end surface thereof; and electrodes each formed by a metal wire piece which is preferably of a substantially square cross-section, the electrodes being attached to the core member with adjacent two longitudinal surfaces of each metal wire piece being securely attached to a respective one of the notched portions, wherein the coil wound on the drum portion is connected to the electrodes.
Other objects, features and advantages of the present invention will become apparent from the ensuing description taken in connection with the accompanying drawings.
Brief description of the drawings
Figures 1 and 2 are schematic perspective views showing the conventional chip type inductors, with coils being omitted, respectively.
Figure 3 is a schematic perspective view showing the chip type inductor according to an embodiment of the present invention.
Figure 4 is a schematic perspective view showing the chip type inductor according to an embodiment of the present invention.
Figure 5 is a view useful for explaining magnetic flux distribution which occurs in the chip type inductor shown in Figure 4.
Figure 6 is a schematic perspective view showing the chip type inductor according to still another embodiment of the present invention.
Figure 7 is a bottom plan view of Figure 6.
Figure 8 is a view illustrating magnetic flux distribution which occurs in the chip type inductor shown in Figures 6 and 7.
Description of the preferred embodiments
Referring first to the perspective view of Figure
3, the chip type inductor illustrated therein includes a core member formed of a magnetic
material such as ferrite or the like, which comprises a drum portion, and an upper flange 5
and a lower flange 6 which are provided in such a
manner as to hold the drum portion therebetween. A cylindrical projection 8 is
provided at the center of that outer end surface 7 of the lowerflange 6 which is disposed in opposing relationship with a printed circuit board or the like.Metal wire having a rectangular crosssection is cut to pieces of a predetermined length, and a pair of such metal wire pieces have one
longitudinal surface thereof applied with an
adhesive agent and adhered to the outer end surface 7 of the lower flange 6, thus constituting
electrodes 9, which are disposed in such a
manner that the opposite longitudinal ends thereof extend beyond the peripheral edge of the
outer end surface 7. The cylindrical projection 8
serves to establish the positions where the
electrodes 9 are to be adhered, with a longitudinal
surface adjacent to that longitudinal surface of
each electrode 9 which is adhered to the outer
end surface 7, being disposed in contact with the
peripheral surface of the cylindrical projection 8.
Needless to say, it is possible that the electrodes
9 may be adhered to the cylindrical projection 8.
In forming the electrodes 9, a metal wire of a
rectangular cross-section is solder-plated over its
entire surface; the solder plated on the surface to
be adhered as mentioned above is mechanically
removed; subsequently, the metal wire is cut to
pieces of a predetermined length; and thereafter,
the solder-removed surfaces of the metal wire
pieces are adhered to the outer end surface of the
core member. In this way, it is possible to achieve
strong adhesion between the metal wire pieces,
i.e., electrodes and the outer end surface 7, while
at the same time preventing the surfaces of the
metal wire pieces from being oxidized.
Furthermore, it is also possible to eliminate the
troublesome procedure of applying solder to the
electrodes 9 by means of dipping them in a solder bath or plating them with solder after the electrodes have been attached to the core member.
A coil 10 is wound onto the drum portion of the core member having the electrodes 9 attached thereto, and the opposite ends 11 thereof are soldered to be connected to the electrodes 9 respectively. In this embodiment, since the electrodes 9 are disposed in such a manner that the opposite ends thereof extend beyond the peripheral edge of the outer end surface 7 as mentioned above, more positive connection can be established between the coil 10 and the electrodes 9 by winding the ends 11 of the coil 10 onto the electrodes 9 and then soldering the coil to the electrodes, and the connecting procedure can be carried out with ease.
Referring to the perspective view of Figure 4, there is shown the chip type inductor according to another embodiment of the present invention, wherein parts similar to those of Figure 3 are indicated by like reference numerals.
The embodiment shown in Figure 4 is different from that shown in Figure 3 in that a projection 12 provided on the outer end surface 7 of the lower flange 6 is of a square shape. Such a square
projection 12 is adapted, when the electrodes are to be provided, to establish the longitudinal direction of the electrodes. Thus, the square projection 12 is useful when it is desired to establish the longitudinal direction of the electrodes.Furthermore, as shown in Figure 4, the electrodes 9, when they are to be attached to the core member, are disposed in contact with the side surfaces of the square projection 1 2, which are applied with an adhesive agent, so that the contact between the electrodes 9 and the projection 1 2 occurs over a greater area than in the case of Figure 3, thus resulting in the electrodes 9 being attached to the lower flange with a higher strength of adhesion.
In each of the foregoing embodiments, the electrodes 9 may be formed of a soldable
conductor material, and by forming the electrodes of a material of a lower permeability such as
copper or the like, the design can be made such that the electrodes are disposed out of the
magnetic circuit of the inductor, thus making it
possible to prevent the inductance and Q of the
inductor from being adversely influenced by the
presence of the electrodes.
Figure 5 illustrates the case where the inductor of
Figure 4 is designed such that the magnetic
circuit thereof is established in such a manner
that no magnetic flux is permitted to pass through
the electrodes 9. The dotted lines indicate
magnetic flux. In contrast thereto, with the prior
art chip type inductors, a magnetic material such
as high-permeability ferrite or the like which
constitutes the core member is present at
positions corresponding to the electrodes 9 of this
embodiment so that magnetic flux is permitted to
pass therethrough and through the thin electrode
material as well, thus resulting in eddy current, by which the inductance and Q are decreased.
Moreover, the prior-art chip type inductors are so designed as to be mounted in a horizontal position so that the coil wound on the drum portion 1 is disposed in directly facing relationship with a printed circuit board as will be seen from
Figures 1 and 2, and thus if any of the conductors of the printed circuit board exists between the flanges of the core member, the magnetic circuit of the inductor will thereby be disturbed, thus resulting in increased eddy current.In contrast thereto, the inductor according to the present invention is so designed as to be mounted in vertical position so that the lower flange 6 of a high permeability is interposed between the coil 10 and the printed circuit board 13 as will be seen from Figure 5; thus, even if a circuit conductor such as indicated at 1 6 exists under the inductor, it is less likely that the magnetic circuit of the inductor will thereby be disturbed.In order to incorporate the present chip type inductor in the circuit, an adhesive agent 1 4 is applied to the projection 1 2 of the lower flange 6; the inductor is adhered to the printed circuit board 1 3 by means of the applied adhesive agent 14; and then the electrodes 9 are connected to the conductors 16 by means of solder 1 5. In this way, the incorporation of the present inductor into the circuit can be conveniently effected.Furthermore, by virtue of the fact that the electrodes 9 are rectangular in cross section, it is possible to prevent the adhesive agent for adhering the electrodes 9 to the core from flowing to cover the electrodes and also to prevent the adhesive agent applied to the core from flowing to the printed circuit board thus decreasing the reliability in soldering as in the case where the electrodes are round in cross-section.
In the arrangement shown in Figure 5, the lower horizontal surface of the projection 12 lies above the lower horizontal surfaces of the electrodes 9 so that the lower flange 6 of the core member is disposed out of direct contact with the printed circuit board 13; thus, it is possible to prevent the inductance and Q of the inductor from being adversely influenced by the conductors of the printed circuit board.
Although in the foregoing embodiments the electrodes 9 were extended beyond the peripheral edge of the outer end surface 7 of the lower flange 6 and the ends 11 of the coil were wound thereonto, this constitutes no prerequisite for the present invention, and the object of the present invention can successfully be achieved without extending the electrodes beyond the peripheral edge of the lower flange 6. Furthermore, the projections 8 and 12 are by no means limited to the illustrated configurations, and by using a suitable tool for establishing the positions of the electrodes 9, such projections may be omitted.
Referring to Figure 6, there is shown, in schematic perspective view, a core member for use with the chip type inductor according to still another embodiment of the present invention.
Figure 7 is a bottom plan view of the core member.
The core member, which is formed of a magnetic material such as ferrite or the like, comprises a drum portion 1 7 on which a coil is wound, and an upper flange 1 8 and a lower flange 19 which are rectangular and provided at the opposite ends of the drum portion 1 7 in such a manner as to hold the drum portion therebetween. The flanges 18 and 19 may not necessarily be rectangular but may take any suitable shape. With such rectangular flanges, however, orientation of the inductor is facilitated in automatic incorporation of the inductor into the circuit of the printed circuit board. The flange 1 9 includes notched portions 22 which are formed by cutting out, substantially at right angles, the edge portions between the outer end surface 1 9a and the side surface 1 9b adjacent thereto.
Indicated at 20 are metal wire pieces which are substantially square in cross-section and of a predetermined length. These metal wire pieces have their two adjacent surfaces applied with an adhesive agent and securely fitted in the notched portions 22, thus constituting electrodes 20. In this case, it is possible to prevent the surfaces of the metal wire pieces from being oxidized and achieve strong adhesion by subjecting the entire surface of metal wire rectangular in cross-section to solder-plating treatment; mechanically removing the solder from two adjacent surfaces of the metal wire and cutting the metal wire to pieces of a predetermined length; and adhering the solder-removed surfaces of the metal wire pieces to the notched portions 22 of the core member.Furthermore, by so doing it is also possible to eliminate the troublesome procedure of applying solder to the electrodes by means of dipping or plating after the electrodes have been securely attached to the core member.
A coil 23 is wound on the drum portion 12 of the core member having the electrodes 20 provided thereon, and the ends of the coil are led out, and passed through grooves 21 formed in the side surfaces of the lower flange 19, extended to the electrodes 20 and then soldered thereto. The electrodes 20 may be formed of any soldable conductor material.
Figure 8 illustrates magnetic flux distribution which occurs in the chip type inductor shown in
Figures 6 and 7, from which it will be appreciated that a magnetic circuit is established in such a manner that no magnetic flux is permitted to pass through the electrodes 20 as in the embodiment shown in Figure 5.
The chip type inductor shown in Figure 8 is also designed in such a manner that the bottom surfaces of the electrodes 20 lie slightly below the outer end surface 1 9a of the lower flange 1 9 so that the lower flange 19 of the core member is disposed out of direct contact with a printed circuit board 25, thereby preventing the inductance and Q of the inductor from being adversely influenced by conductor 26 of the printed circuit board 25. In Figure 8, indicated at 24 is an adhesive agent applied to the outer end surface 1 9a of the lower flange 1 9, and denoted at 27 is solder.
With the electrodes 20 chamfered, gaps are formed between the electrodes and the core member so that excessive portions of the adhesive agent applied to securely attach the electrodes 20 to the core member are accommodated in the gaps, thereby making it possible to prevent the adhesive agent from being bulged out and also to prevent the coil leads from being cut off.
As will be appreciated from the foregoing discussion, the chip type inductor according to the present invention is provided with electrodes which are formed of metal wire pieces rectangular in cross-section having their longitudinal surfaces securely attached to the lower flange of the core member. Although in the foregoing embodiments, the metal wire pieces were securely attached to the core member by means of an adhesive agent, it is also possible that metal films may be partially formed on the core member by printing silver plaste, for example, and then the metal wire pieces may be securely attached to the thus formed metal films by means of series resistance welding or the like.Alternatively, notched portions may be formed in the edge portions between the side surfaces and the outer end surface of the lower flange of the core member in such a manner as to constitute recesses of a substantially right-angle cross-section, and adjacent two longitudinal surfaces of the metal wire pieces may be securely attached to the notched portions, as described above. The electrodes can readily be prepared simply by cutting a square metal wire, and do not require any special forming procedure. Furthermore, the electrodes can easily be positioned when they are to be securely attached, so that manufacture of the inductor is facilitated.The necessary flatness required of the electrodes when they are connected to the printed circuit board, can readily be achieved, and a highly reliable connection can be established between the electrodes and the conductors of the printed circuit board or the like by the fact that the electrodes are soldered to the coil lead wires and the conductors of the printed circuit board at the remaining surfaces to which no adhesive agent is applied. By virtue of the fact that the electrodes are rectangular in crosssection, the present chip type inductor can be prevented from suffering deterioration in terms of inductance and Q. Moreover, by virtue of the fact that the present inductor is of a vertical type structure, it is possible to minimize the adverse influence of the conductors of the printed circuit board or the like on the inductor, while at the same time facilitating incorporation of the inductor into the circuit on the board.
While the present invention has been described with respect to specific embodiments thereof, it is to be understood that the present invention is by no means limited thereto but covers all changes and modifications which will become possible without departing from the scope of the appendedclaims.
Claims (6)
1. A chip type inductor comprising a core member having a drum portion on which a coil is wound, and a pair of flanges provided at the opposite ends of said drum portion respectively; and electrodes secured to the outer end surface of one of said pair of flanges, said electrodes being formed of a plurality of metal wire pieces of a square cross-section having longitudinal surface securely attached to the outer end surface of said one flange, wherein the coil wound on said drum portion is connected to said electrodes.
2. A chip type inductor as set forth in claim 1, wherein a projection is provided on the outer end surface of said one flange, and the longitudinal surfaces of said metal wire pieces are disposed in contact with the side surfaces of said projection.
3. A chip type inductor as set forth in any of claims 1 and 2, wherein said electrodes are longitudinally extended beyond the peripheral edge of said outer end surface of said one flange.
4. A chip type inductor comprising a core member having a drum portion on which a coil is wound, and a pair of flanges provided at the opposite ends of said drum portion respectively, one of said flanges being formed, in the edge portions between the opposite side surfaces and the outer end surface thereof, with notched portions; and electrodes formed of metal wire pieces square in cross-section having two adjacent longitudinal surfaces securely attached to said notched portions, wherein the coil wound on said drum portion is connected to said electrodes.
5. A chip type inductor as set forth in claim 4, wherein at least one of two adjacent surfaces of each said electrode which is to be connected to the conductors of a printed circuit board or the like lies below the outer end surface of the lower flange of said core member.
6. A chip type inductor substantially as hereinbefore described with reference to Figures 3 to 8 of the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13242181U JPS5837113U (en) | 1981-09-04 | 1981-09-04 | chip type inductor |
| JP14904981U JPS5853110U (en) | 1981-10-07 | 1981-10-07 | chip type inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2108769A true GB2108769A (en) | 1983-05-18 |
| GB2108769B GB2108769B (en) | 1985-03-20 |
Family
ID=26467001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08225213A Expired GB2108769B (en) | 1981-09-04 | 1982-09-03 | Arrangement of terminals on a chip type inductor |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR890003691Y1 (en) |
| DE (1) | DE3232533A1 (en) |
| GB (1) | GB2108769B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3510638C1 (en) | 1985-03-23 | 1986-10-16 | Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver | Inductive miniature component, especially a miniature coil, and a method for producing such a component |
| EP0393599A2 (en) * | 1989-04-19 | 1990-10-24 | Siemens Aktiengesellschaft | Surface mounted electric coil |
| EP0764956A2 (en) * | 1995-09-22 | 1997-03-26 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Electric component to be mounted on double printed circuit boards |
| US7106160B2 (en) | 2004-08-24 | 2006-09-12 | Molon Motor & Coil Corp. | Coil bobbin with anti-rotational elements |
| WO2014088893A1 (en) * | 2012-12-03 | 2014-06-12 | Pulse Electronics, Inc. | Choke coil devices and methods of making and using the same |
| US9989391B2 (en) | 2013-12-20 | 2018-06-05 | Endress + Hauser Flowtec Ag | Coil |
| EP3979274A4 (en) * | 2019-09-24 | 2022-10-26 | Suzhou Opple Lighting Co., Ltd. | INDUCTIVE SCAFFOLDING, INDUCTIVE DEVICE AND LAMP |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3708742A1 (en) * | 1987-03-18 | 1988-10-06 | Bosch Gmbh Robert | FERRITE CORE COILS WITH MORE THAN TWO COIL CONNECTORS FOR REFLOW SOLUTION ON A CIRCUIT BOARD |
| JPH0723934Y2 (en) * | 1989-03-13 | 1995-05-31 | ティーディーケイ株式会社 | Inductance element |
| JP2533069Y2 (en) * | 1989-05-23 | 1997-04-16 | ティーディーケイ株式会社 | Electronic component stop |
| DE102013114731A1 (en) * | 2013-12-20 | 2015-06-25 | Endress+Hauser Flowtec Ag | Kitchen sink |
-
1982
- 1982-09-01 DE DE19823232533 patent/DE3232533A1/en not_active Ceased
- 1982-09-03 GB GB08225213A patent/GB2108769B/en not_active Expired
- 1982-09-03 KR KR2019820006994U patent/KR890003691Y1/en active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3510638C1 (en) | 1985-03-23 | 1986-10-16 | Neosid Pemetzrieder Gmbh & Co Kg, 5884 Halver | Inductive miniature component, especially a miniature coil, and a method for producing such a component |
| EP0393599A2 (en) * | 1989-04-19 | 1990-10-24 | Siemens Aktiengesellschaft | Surface mounted electric coil |
| EP0393599A3 (en) * | 1989-04-19 | 1991-01-09 | Siemens Aktiengesellschaft | Surface mounted electric coil |
| EP0764956A2 (en) * | 1995-09-22 | 1997-03-26 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Electric component to be mounted on double printed circuit boards |
| EP0764956A3 (en) * | 1995-09-22 | 1997-05-02 | Siemens Matsushita Components | |
| US7106160B2 (en) | 2004-08-24 | 2006-09-12 | Molon Motor & Coil Corp. | Coil bobbin with anti-rotational elements |
| WO2014088893A1 (en) * | 2012-12-03 | 2014-06-12 | Pulse Electronics, Inc. | Choke coil devices and methods of making and using the same |
| US9989391B2 (en) | 2013-12-20 | 2018-06-05 | Endress + Hauser Flowtec Ag | Coil |
| EP3979274A4 (en) * | 2019-09-24 | 2022-10-26 | Suzhou Opple Lighting Co., Ltd. | INDUCTIVE SCAFFOLDING, INDUCTIVE DEVICE AND LAMP |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3232533A1 (en) | 1983-05-05 |
| KR890003691Y1 (en) | 1989-05-31 |
| GB2108769B (en) | 1985-03-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930903 |