Method of producing an amorphous transformer for electric power supply
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United States of America Patent
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Nov 3, 2015
Grant Date -
Aug 25, 2011
app pub date -
May 5, 2011
filing date -
Feb 28, 2006
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Abstract
This method of producing an amorphous transformer for electric power supply comprises forming and shaping an iron core by laminating amorphous alloy thin bands and forming a winding, subjecting the iron core, after forming and shaping, to an annealing treatment in which a temperature of a center portion of the iron core during annealing is 300 to 340° C. and a holding time is not less than 0.5 hr, and applying a magnetic field having a strength of not less than 800 A/m to the iron core while subjecting the iron core, after forming and shaping, to the annealing treatment.
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