Magnetic core for xDSL modem transformer and its composition
AssigneeTDK Corporation
InventorsYuji Sezai, Ippou Hirai
Life of this patent
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Abstract
A magnetic core composition for an xDSL modem transformer having a main component comprised of MnO: 22.0 to 34.5 mol % and ZnO: 12.0 to 25.0 mol % and the rest of substantially Fe2O3. With a magnetic core for a transformer made of this composition, the THD of the transformer becomes not more than −80 dB in a broad frequency band, so this can be used advantageously as the magnetic core for an xDSL modem transformer.
Claims12
A magnetic core composition for an xDSL modem transformer having a main component comprised of MnO:
- 22.0 to 34.5 mol % and ZnO:
- 12.0 to 25.0 mol % and the rest of substantially Fe2O3.
A magnetic core for an xDSL modem transformer having a main component comprised of MnO:
- 22.0 to 34.5 mol % and ZnO:
- 12.0 to 25.0 mol % and the rest of substantially Fe2O3.
A magnetic core for a transformer comprising
- a bottom plate,
- a columnar center leg rising from an approximate center of said bottom plate in a first direction, and
- an outer leg rising from said bottom plate surrounding at least the two sides of the center leg in the first direction separated by a predetermined space,
- a height of the center leg being lower than a height of said outer leg by exactly a predetermined gap and a through gap of substantially the same height as the height of the center leg being formed at part of the top of said outer leg.
Dependencies are inferred from the claim text.