WO1994028561A1 - A bobbin capable of reliably insulating a first coil from a second coil - Google Patents
A bobbin capable of reliably insulating a first coil from a second coil Download PDFInfo
- Publication number
- WO1994028561A1 WO1994028561A1 PCT/JP1994/000860 JP9400860W WO9428561A1 WO 1994028561 A1 WO1994028561 A1 WO 1994028561A1 JP 9400860 W JP9400860 W JP 9400860W WO 9428561 A1 WO9428561 A1 WO 9428561A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- board
- perforation
- divider
- defines
- Prior art date
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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
-
- 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
- H01F2005/025—Coils wound on non-magnetic supports, e.g. formers wound on coaxial arrangement of two or more formers
Definitions
- a conventional bobbin comprises a sleeve, a plurality of divider plates, and first and second end plates.
- the sleeve has a sleeve internal surface which defines a sleeve perforation.
- the divider plates are attached to the sleeve with a space left between two adjacent ones of the divider plates and with the divider plates perpendicular to the sleeve.
- the first and the second end plates are attached to side ends of the sleeve with a space left between one of the divider plates and each of the first and the second end plates.
- a conventional transformer comprises the bobbin, first and second coils attached to the bobbin, a magnetic core attached to the bobbin, and first-set and second-set connectors.
- the first and the second coils are attached around the sleeve between the divider plates.
- the first and the second coils are connected to the first-set and the second-set converters, respectively.
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second sleeve perforations receiving the first sleeve; and (E)
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second sleeve perforations receiving the first sleeve; and (E)
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second sleeve perforations receiving the first sleeve; and (E)
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second sleeve perforations receiving the first sleeve; and (E)
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second, third, fourth, and fifth board internal surfaces which define second, third, fourth, and fifth board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second slee
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second, third, fourth, and fifth board internal surfaces which define second, third, fourth, and fifth board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated with the second board perforation, the second board and the second slee
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, second and third board internal surfaces which define second and third board perforations, and first and second ditch surfaces which reach from the second board main surface to the second board subsidiary surface and define first and second ditches; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated
- a bobbin which comprises (A) a first board having a first board main surface and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations, and first and second ditch surfaces which reach from the second board main surface to the second board subsidiary surface and define first and second ditches; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second sleeve perforation, the second sleeve being integral with the second board with the second sleeve perforation associated
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin, wherein: the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board mair surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines a second
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second sleeve internal surface which defines
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second, third, fourth, and fifth board internal surfaces which define second, third, fourth, and fifth board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second s
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second, third, fourth, and fifth board internal surfaces which define second, third, fourth, and fifth board perforations; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation; (D) a second sleeve having a second s
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, second and third board internal surfaces which define second and third board perforations, and first and second ditch surfaces which reach from the second board main surface to the second board subsidiary surface and define first and second ditches; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation
- a transformer which comprises a bobbin, first and second coils attached to the bobbin, first and second magnetic cores attached to the bobbin, and first-set and second-set connectors fixed to the bobbin
- the bobbin comprises (A) a first board having a first board main surface, a first board subsidiary surface, and a first board internal surface which defines a first board perforation; (B) a second board having a second board main surface opposed to the first board main surface, a second board subsidiary surface, and second and third board internal surfaces which define second and third board perforations, and first and second ditch surfaces which reach from the second board main surface to the second subsidiary surface and define first and second ditches; (C) a first sleeve having a first sleeve internal surface which defines a first sleeve perforation, the first sleeve being integral with the first board with the first sleeve perforation associated with the first board perforation
- Fig. 1 is a perspective view of a conventional bobbin
- Fig. 2 is a perspective view of a conventional transformer
- Fig. 3 is an exploded perspective view of a transformer according to a first embodiment of this invention
- Fig. 4 is a perspective view of the transformer illustrated in Fig. 3;
- Fig. 5 is a partial sectional view of the transformer illustrated in Fig. 4;
- Fig. 6 is an exploded sectional view of the transformer illustrated in Fig. 4;
- Fig. 7 is a sectional view taken along a line 7-7 in Fig. 4;
- Fig. 8 is an exploded perspective view of a transformer according to a second embodiment of this invention
- Fig. 9 is an exploded sectional view of the transformer illustrated in Fig. 8;
- Fig. 10 is an exploded perspective view of a transformer according to a third embodiment of this invention.
- Fig. 11 is a perspective view of the transformer illustrated in Fig. 10.
- the conventional bobbin comprises a sleeve 21, a plurality of divider plates 23, and first and second end plates 25 and 27.
- the sleeve 21 has a sleeve internal surface 28 which defines a sleeve perforation.
- the divider plates 23 are attached to the sleeve with a space left between two adjacent ones of the divider plates 23 and with the divider plates 23 perpendicular to the sleeve 21.
- the first and the second end plates 25 and 27 are attached to side ends of the sleeve 21 with a space left between one of the divider plates 23 and each of the first and the second end plates 25 and 27.
- FIG. 2 a conventional transformer will be described for a better understanding of this invention. Similar parts are designated by like reference numerals.
- the conventional transformer comprises the bobbin, first and second coils 29 and 31 attached to the bobbin, a magnetic core (not shown) attached to the bobbin, and first-set and second-set connectors 33 and 35 fixed to the bobbin.
- the first and the second coils 29 and 31 are attached around the sleeve 21 between the divider plates 23.
- the first and the second coils 29 and 31 are connected to the first-set and the second-set connectors 33 and 35, respectively.
- the transformer comprises a bobbin 41, first and second coils 43 and 45 attached to the bobbin 41, first and second magnetic cores 47 and 49 attached to the bobbin 41, and first-set and second-set connectors 51 and
- the bobbin 41 is made of insulating material.
- the bobbin 41 comprises first and second boards 55 and 57, first and second sleeves 59 and 61, and a divider sleeve 63.
- the first board 55 has a first board main surface
- the second board 57 has a second board main surface 71 opposed to the first board main surface 65, a second board subsidiary surface 73, and second and third board internal surfaces 75 and 77 which define second and third board perforations.
- the first sleeve 59 has a first sleeve internal surface 79 which defines a first sleeve perforation.
- the first sleeve 59 is integral with the first board 55 with the first sleeve perforation associated with the first board perforation.
- the second sleeve 61 has a second sleeve internal surface 81 which defines a second sleeve perforation.
- the second sleeve 61 is integral with the second board 57 with the second sleeve perforation associated with the second board perforation.
- the second board and the second sleeve perforations receive the first sleeve 59.
- the divider sleeve 63 has a divider sleeve internal surface 83 which defines a divider sleeve perforation.
- the divider sleeve 63 is integral with the second board 57 with the divider sleeve 63 surrounding the second sleeve 61 and the third board perforation and with the divider sleeve 63 interposed between the first and the second board main surfaces 65 and 71 so that the divider sleeve 63 surrounds the first sleeve 59.
- the divider sleeve 63 is welded to the first board main surface 65.
- the divider sleeve 63 may be glued to the first board main surface 65.
- the first coil 43 is attached around the divider sleeve 63 and is connected to the first-set connectors 51.
- the second coil 45 is attached around the second sleeve 61 and is connected to the second-set connectors 53 through the third board perforation.
- the first magnetic core 47 has a first leg 85.
- the first magnetic core 47 is brought into contact with the first board subsidiary surface 67 with the first leg 85 inserted in the first sleeve perforation.
- the second magnetic core 49 has a second leg 87.
- the second magnetic core 9 is brought into contact with the second board subsidiary surface 73 with the second leg 87 inserted in the first sleeve perforation and brought into contact with the first leg 85.
- a first end portion of the first magnetic core 47 is brought into contact with a second end portion of the second magnetic core 49 and is glued to the second end portion.
- FIG. 8 and 9 the description will proceed to a transformer according to a second embodiment of this invention.
- the transformer comprises similar parts designated by like reference numerals.
- the divider sleeve 63 is integral with the first board 55 with the divider sleeve 63 surrounding the first sleeve 59.
- the divider sleeve 63 further has a contact peak portion 89 which is brought into contact with the second board main surface 71.
- the divider sleeve 63 surrounds the second sleeve 61 and the third board perforation.
- the second board 57 has first side surfaces 91 to which the first-set connectors 53 are fixed.
- the third board internal surface 75 reaches the first side surfaces 91.
- the second board 57 further has fourth and fifth board internal surfaces 93 and 95 which define fourth and fifth board perforations.
- First and second coupling arms 97 and 99 have first and second coupling peak portions and are integral with the first board 55. The first and the second coupling arms 97 and 99 pass through the fourth and the fifth board perforations with the first and the second peak portions brought into contact with the second board subsidiary surface 73.
- the transformer comprises similar parts designated by like reference numerals.
- the second board 57 has first and second ditch surfaces 101 and 103 which reach from the second board main surface 71 to the second board subsidiary surface 73 and which define first and second ditches.
- the first and the second coupling arms 97 and 99 pass through the first and the second ditches with the first and the second coupling peak portions brought into contact with the second board subsidiary surface 73.
- the second board 57 has a locating lug 105 which is inserted in the third board perforation.
- the divider sleeve 63 may be integral with the first board 55 with the divider sleeve 63 surrounding the first sleeve 59.
- the divider sleeve 63 is interposed between the first and the second board main surfaces 65 and 71 so that the divider sleeve 63 surrounds the second sleeve 61 and the third board perforation.
- the divider sleeve 63 is welded or glued to the second board main surface 71.
- the divider sleeve 63 may be integral with the second board 57 with the divider sleeve 63 surrounding the second sleeve 61 and the third board perforation. In this event, the divider sleeve 63 is interposed between the first and the second board main surfaces 65 and 71 so that the divider sleeve 63 surrounds the first sleeve 59.
- the divider sleeve 63 has the contact peak portion 89 which is brought into contact with the first board main surface 65.
- the divider sleeve 63 may have not the contact peak portion 89. In this event, the divider sleeve 63 is directly brought into contact with the first or the second board main surface 65 or 71.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69401485T DE69401485T2 (en) | 1993-05-31 | 1994-05-31 | A TRANSFORMER |
EP94916416A EP0653099B1 (en) | 1993-05-31 | 1994-05-31 | A transformer |
JP6517895A JPH08502860A (en) | 1993-05-31 | 1994-05-31 | Bobbin capable of reliably insulating the first coil and the second coil |
NO950331A NO305459B1 (en) | 1993-05-31 | 1995-01-27 | Transformer |
HK98102030A HK1002924A1 (en) | 1993-05-31 | 1998-03-11 | A transformer |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5/154153 | 1993-05-31 | ||
JP15415493 | 1993-05-31 | ||
JP5154153A JPH06342726A (en) | 1993-05-31 | 1993-05-31 | Coil bobbin for high voltage transformer |
JP5/154154 | 1993-05-31 | ||
JP6/54977 | 1994-02-28 | ||
JP5497794 | 1994-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994028561A1 true WO1994028561A1 (en) | 1994-12-08 |
Family
ID=27295452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/000860 WO1994028561A1 (en) | 1993-05-31 | 1994-05-31 | A bobbin capable of reliably insulating a first coil from a second coil |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0653099B1 (en) |
JP (1) | JPH08502860A (en) |
KR (1) | KR100310372B1 (en) |
CN (1) | CN1085390C (en) |
DE (1) | DE69401485T2 (en) |
HK (1) | HK1002924A1 (en) |
MY (1) | MY111103A (en) |
NO (1) | NO305459B1 (en) |
SG (1) | SG45178A1 (en) |
TW (1) | TW239216B (en) |
WO (1) | WO1994028561A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014192283A (en) * | 2013-03-27 | 2014-10-06 | Nec Commun Syst Ltd | Electronic device, mounting board, and method for manufacturing the mounting board |
JP2014192281A (en) * | 2013-03-27 | 2014-10-06 | Nec Commun Syst Ltd | Transformer and method of manufacturing the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005340342A (en) * | 2004-05-25 | 2005-12-08 | Yoshiaki Akachi | Coil device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0097599A1 (en) * | 1982-06-23 | 1984-01-04 | Legrand Deri | Electromagnetic device, such as an electrical transformer, of the type having a bobbin made up of two portions |
EP0138014A1 (en) * | 1983-10-01 | 1985-04-24 | GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. | Chamber coil body |
JPS6181612A (en) * | 1984-09-28 | 1986-04-25 | Matsushita Electric Ind Co Ltd | Transformer |
EP0325467A1 (en) * | 1988-01-19 | 1989-07-26 | John Fluke Mfg. Co., Inc. | Modular high frequency power transformer |
GB2218573A (en) * | 1988-04-26 | 1989-11-15 | Kijima Co Ltd | Inductive device with bobbins and windings |
EP0381580A1 (en) * | 1989-02-02 | 1990-08-08 | General Electric Cgr S.A. | High-voltage power supply device for an X-ray tube |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2100303B (en) * | 1981-06-13 | 1984-08-01 | Carclo Eng Group Plc | Improvements in or relating to cardclothing |
-
1994
- 1994-05-30 MY MYPI94001364A patent/MY111103A/en unknown
- 1994-05-30 TW TW083104921A patent/TW239216B/zh active
- 1994-05-31 WO PCT/JP1994/000860 patent/WO1994028561A1/en active IP Right Grant
- 1994-05-31 CN CN94190336A patent/CN1085390C/en not_active Expired - Fee Related
- 1994-05-31 DE DE69401485T patent/DE69401485T2/en not_active Expired - Fee Related
- 1994-05-31 EP EP94916416A patent/EP0653099B1/en not_active Expired - Lifetime
- 1994-05-31 KR KR1019950700292A patent/KR100310372B1/en not_active IP Right Cessation
- 1994-05-31 SG SG1996000997A patent/SG45178A1/en unknown
- 1994-05-31 JP JP6517895A patent/JPH08502860A/en active Pending
-
1995
- 1995-01-27 NO NO950331A patent/NO305459B1/en not_active IP Right Cessation
-
1998
- 1998-03-11 HK HK98102030A patent/HK1002924A1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0097599A1 (en) * | 1982-06-23 | 1984-01-04 | Legrand Deri | Electromagnetic device, such as an electrical transformer, of the type having a bobbin made up of two portions |
EP0138014A1 (en) * | 1983-10-01 | 1985-04-24 | GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. | Chamber coil body |
JPS6181612A (en) * | 1984-09-28 | 1986-04-25 | Matsushita Electric Ind Co Ltd | Transformer |
EP0325467A1 (en) * | 1988-01-19 | 1989-07-26 | John Fluke Mfg. Co., Inc. | Modular high frequency power transformer |
GB2218573A (en) * | 1988-04-26 | 1989-11-15 | Kijima Co Ltd | Inductive device with bobbins and windings |
EP0381580A1 (en) * | 1989-02-02 | 1990-08-08 | General Electric Cgr S.A. | High-voltage power supply device for an X-ray tube |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 10, no. 255 (E - 433)<2311> 2 September 1986 (1986-09-02) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014192283A (en) * | 2013-03-27 | 2014-10-06 | Nec Commun Syst Ltd | Electronic device, mounting board, and method for manufacturing the mounting board |
JP2014192281A (en) * | 2013-03-27 | 2014-10-06 | Nec Commun Syst Ltd | Transformer and method of manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
NO950331D0 (en) | 1995-01-27 |
MY111103A (en) | 1999-08-30 |
CN1085390C (en) | 2002-05-22 |
KR950702740A (en) | 1995-07-29 |
TW239216B (en) | 1995-01-21 |
DE69401485T2 (en) | 1997-06-05 |
DE69401485D1 (en) | 1997-02-27 |
JPH08502860A (en) | 1996-03-26 |
CN1110489A (en) | 1995-10-18 |
NO950331L (en) | 1995-01-27 |
NO305459B1 (en) | 1999-05-31 |
KR100310372B1 (en) | 2003-05-09 |
EP0653099A1 (en) | 1995-05-17 |
EP0653099B1 (en) | 1997-01-15 |
HK1002924A1 (en) | 1998-09-25 |
SG45178A1 (en) | 1998-01-16 |
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