EP0415495A3 - Transformers for intermittent operation at clock frequencies - Google Patents
Transformers for intermittent operation at clock frequencies Download PDFInfo
- Publication number
- EP0415495A3 EP0415495A3 EP19900202283 EP90202283A EP0415495A3 EP 0415495 A3 EP0415495 A3 EP 0415495A3 EP 19900202283 EP19900202283 EP 19900202283 EP 90202283 A EP90202283 A EP 90202283A EP 0415495 A3 EP0415495 A3 EP 0415495A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformers
- intermittent operation
- clock frequencies
- frequencies
- clock
- 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.)
- Withdrawn
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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Regulation Of General Use Transformers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928792A DE3928792A1 (en) | 1989-08-31 | 1989-08-31 | TRANSFORMERS FOR OPERATION INTERMITTING WITH A CLOCK FREQUENCY |
DE3928792 | 1989-08-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0415495A2 EP0415495A2 (en) | 1991-03-06 |
EP0415495A3 true EP0415495A3 (en) | 1992-04-15 |
Family
ID=6388248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900202283 Withdrawn EP0415495A3 (en) | 1989-08-31 | 1990-08-27 | Transformers for intermittent operation at clock frequencies |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0415495A3 (en) |
JP (1) | JPH0391905A (en) |
KR (1) | KR910005336A (en) |
DE (1) | DE3928792A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5219219B2 (en) * | 2009-05-19 | 2013-06-26 | ニチコン株式会社 | Transformer and switching power supply device using the transformer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2052166A (en) * | 1979-06-05 | 1981-01-21 | Philips Nv | Transformer |
JPS56108218A (en) * | 1980-01-31 | 1981-08-27 | Nec Corp | Transformer with shield against electrostatic charge |
JPS63319254A (en) * | 1987-06-20 | 1988-12-27 | Tokin Corp | Oxide magnetic material generating low magnetic loss |
EP0364171A2 (en) * | 1988-10-13 | 1990-04-18 | Matsushita Electric Industrial Co., Ltd. | Highfrequency heating apparatus using frequency-converter-type power supply |
-
1989
- 1989-08-31 DE DE3928792A patent/DE3928792A1/en not_active Withdrawn
-
1990
- 1990-08-27 EP EP19900202283 patent/EP0415495A3/en not_active Withdrawn
- 1990-08-28 KR KR1019900013274A patent/KR910005336A/en not_active Application Discontinuation
- 1990-08-29 JP JP2225448A patent/JPH0391905A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2052166A (en) * | 1979-06-05 | 1981-01-21 | Philips Nv | Transformer |
JPS56108218A (en) * | 1980-01-31 | 1981-08-27 | Nec Corp | Transformer with shield against electrostatic charge |
JPS63319254A (en) * | 1987-06-20 | 1988-12-27 | Tokin Corp | Oxide magnetic material generating low magnetic loss |
EP0364171A2 (en) * | 1988-10-13 | 1990-04-18 | Matsushita Electric Industrial Co., Ltd. | Highfrequency heating apparatus using frequency-converter-type power supply |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 13, no. 169 (C-587)21. April 1989 & JP-A-63 319 254 ( TOKIN ) 27. Dezember 1988 * |
PATENT ABSTRACTS OF JAPAN vol. 5, no. 181 (E-83)(853) 20. November 1981 & JP-A-56 108 218 ( NIPPON DENKI ) 27. August 1981 * |
Also Published As
Publication number | Publication date |
---|---|
JPH0391905A (en) | 1991-04-17 |
EP0415495A2 (en) | 1991-03-06 |
KR910005336A (en) | 1991-03-30 |
DE3928792A1 (en) | 1991-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
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|
PUAL | Search report despatched |
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AK | Designated contracting states |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19920930 |