Sintered moulding, transformer core and inductor core of Li(Ni)Z

Details Sintered moulding, transformer core and inductor core of Li(Ni)Z Sintered moulding, transformer core and inductor core of Li(Ni)Z

1995-09-13

1999-12-14

Shingleton, Michael B

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315276, 148306, H05B 3702

Patent

active

060022116

ABSTRACT:
The invention relates to a sintered moulding of Li(Ni)Zn ferrite material, a transformer core and an inductor core of this material as well as several applications of these cores. In accordance with the invention, the majority of the grains of the sintered material have a monodomain structure. This leads to a substantial reduction of the loss factor and the overall losses when these mouldings are subjected to high-frequency applications and power applications. The ferrite material preferably comprises 59-65 mol % Fe.sub.2 O.sub.3, 7-11 mol % Li.sub.2 CO.sub.3, 4-8 mol % MnO and 20-28 mol % ZnO. This also provides the material with a high saturation magnetization.

REFERENCES:
patent: 4238342 (1980-12-01), Im et al.
patent: 4728867 (1988-03-01), Postman et al.
patent: 4748383 (1988-05-01), Houkes
patent: 5206620 (1993-04-01), Watanabe
patent: 5449419 (1995-09-01), Suzuki et al.
Philips Data Handbook, MA-01, 1993, p. 134.

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