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Technical Article

Why is the secondary current is higher than primary in step down transformer?

Time:2019-04-11 16:38:12 Click:

It is known that the transmission power of both sides in the ideal trnsformer are equivalent, that’s to say, the primary input power is equal to the secondary output power;


Let’s suppose that the primary input voltage is V1, primary input current is I1; While the secondary output voltage is V2, secondary output current is I2, then V1*I1=V2*I2;


Likewise, in step down transformer, V1>V2, so I2>I1.(The secondary current is higher than primary current.)




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