How to change the correct voltage effectively?
The transformer has a special parameter used to change the voltage: the transformation ratio.
The transformer ratio represents the relationship between the number of turns in the primary winding and the number of turns in the secondary winding. From the transformation ratio, we can reduce whether the transformer is a step-up transformer or a step-down transformer or a 1:1 transformer.
Transformer ratio = primary winding turns / secondary winding turns.
If the transformer ratio is less than 1, this is a step-up transformer, which means that the number of turns of the primary winding is less than that of the secondary winding.
The transformer ratio greater than 1 is a step-down transformer, indicating that the number of turns in the primary winding is greater than that in the secondary winding.
According to the working principle of the transformer, the current enters from the primary winding and transforms from the secondary winding. Because the direction of the input AC current is constantly changing, the magnetic field changes synchronously with the current. Because the size and direction of the magnetic field changes constantly, current is induced in the secondary coil. Since the voltage on each coil is similar, the more turns the secondary coil has, the more voltage output from the secondary coil is sufficient.
If the number of turns of the primary coil is greater than that of the secondary coil, the voltage on the secondary coil will decrease, which is the step-down transformer. Conversely, if the number of turns in the primary coil is less than that in the secondary coil, the voltage on the secondary coil will increase. High, this is the step-up transformer.
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