Sintered transformer or inductor core of nizn ferrite material

Details Sintered transformer or inductor core of nizn ferrite material Sintered transformer or inductor core of nizn ferrite material

1997-11-26

1999-02-16

Bonner, Melissa

Compositions

Magnetic

Iron-oxygen compound containing

336233, 336 30, C04B 3530, H01F 134, H01F 27255

Patent

active

058716629

ABSTRACT:
The invention describes a transformer core of NiZn ferrite material. Said transformer core exhibits low overall losses when it is used in a transformer. Said low losses are attained if the majority of the grains of the sintered ferrite material have a monodomain structure. This is the case if the average grain size is smaller than 2.8 microns. The average grain size of the sintered material preferably ranges of from 1.3 to 2.6 microns. The .delta.-value is preferably less than 4 nm.

REFERENCES:
patent: 4059664 (1977-11-01), Nicolas et al.
patent: 4372865 (1983-02-01), Yu et al.
patent: 5626789 (1997-05-01), Varshney et al.

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