Title:
COIL CORE FOR POWER LINE FILTER
Document Type and Number:
Japanese Patent JPS5724519
Kind Code:
A
Abstract:
PURPOSE: To make prevention from high voltage pulsed noise effective by utilizing magnetic alloy which has a degree of amorphousness below a specified value.
CONSTITUTION: A magnetic core 2 is made of a magnetic alloy sheet 11 which has a degree of amorphousness below 50%, and a coil 4 for a power line filter is built by a winding 3 applied on it. To get a desired degree of amorphousness in a thin sheet 11 heat treatment is effective. This heat treatment is done by heating proper duration below and at a crystallizing temperature and near crystallizing temperature in absence of a magnetic field. By prefering heating temperature and duration a desired degree of amorphousness is obtained.
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Inventors:
TAKAYAMA MASARU
SHIGETA MASAO
SHIGETA MASAO
Application Number:
JP9966580A
Publication Date:
February 09, 1982
Filing Date:
July 21, 1980
Export Citation:
Assignee:
TDK ELECTRONICS CO LTD
International Classes:
H01F1/153; H01F17/06; H01F37/00; H01F41/02; (IPC1-7): H01F1/14; H01F17/04; H01F37/00