Why high frequency transformer is small in size?

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chetan shidling asked 4 years ago

I need short information.

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chetan shidling answered 4 years ago

The size of the high-frequency transformer is small because it operates at high frequency, let me explain.
 
E = 4.44fNQm
 
B = Qm / A       A means area
 
E = 4.44fNBA
 
Therefore, f = 1 / A
 
The frequency is inversely proportional to the area. If the frequency increases the area will reduce.