Core for use in inductive element, transformer and inductor

Details Core for use in inductive element, transformer and inductor Core for use in inductive element, transformer and inductor

1999-01-05

2000-05-09

Donovan, Lincoln

Inductor devices

Plural part core

336200, 336232, H01F 500, H01F 2728

Patent

active

06060977&

ABSTRACT:
The present invention provides an inductor having a small core loss at a high frequency. The inductor includes a transformer that has a core formed of a base core and a cover core, and a conductive plate sandwiched between the base core and the cover core, as well as a conductive plate sandwiched between the base core and the cover core. The base core is composed of a Mn--Zn ferrite with a mean grain size of 5 .mu.m or less. The transformer has a small core loss at a high frequency band without a decrease in power transmission efficiency.

REFERENCES:
patent: 5192375 (1993-03-01), Sawa et al.
patent: 5559487 (1996-09-01), Butcher et al.
patent: 5598135 (1997-01-01), Maeda et al.
patent: 5631822 (1997-05-01), Silberkleit et al.
patent: 5781093 (1998-07-01), Grandmont et al.
patent: 5850336 (1998-12-01), Nakajima
patent: 5939966 (1999-08-01), Ei

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