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The two key conditions for demagnetization are: alternating magnetic poles and decreasing magnetic field strength. To demagnetize a ferromagnetic material, the uniformity of its magnetic domain alignment must be disrupted, making the arrangement of the magnetic domains completely random so that no magnetism is exhibited externally. Read More

Transformer cores are generally made of silicon steel sheets. Silicon steel is a type of steel containing silicon (also known as silica). The reason for using silicon steel to make transformer cores is that it is a highly permeable magnetic material, which can generate a strong magnetic induction intensity within an energized coil. This allows the volume of the transformer to be reduced. Read More