Step-up transformer is an electric device that raises the voltage of the secondary side (winding) to the primary side (winding). A transformer is a static device that is used to step up voltage and step down the voltage. Power remains the same on the primary side and the secondary side of the transformer. As we know, the frequency also stays the same but 180 degrees out of phase from supply frequency.

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Step-up Transformer

Step-Up Transformer Output Voltage

The Step-up transfer uses to increase the output voltage, but the current of will be decreased to remain the power the same of both sides. The primary side voltage is low and high current as compared to the secondary side. While secondary side voltage is high and low current as compared to the primary side. To step-up voltage or step-down voltage, the main rule of the primary and secondary winding (number of turns). If the secondary winding number of turns more than the primary winding then said to be a step-up transformer.

Applications of Step Up Transformer:

Mostly step-up transformers use to transmit electric power from power generating stations to grid station. Usually, generating voltage about 11KV or some time 20KV. While the transmission voltages 500KV, 132KV & 66KV or according to system requirements. So, to increase the generating voltage to the desired voltage, we use a step-up transformer.

To minimize transmission line losses step-up transformer used.

It uses small electronic components.

Watch this video for a better understanding

Which Household Equipment needs this transformer?

Nowadays, these transformers are not many uses at the domestic level. In fluorescent tube lights, step up transformers are used in the blast to rises the voltages and limit the current. In vacuum tubes, TVs and radio also use it because of these required high voltages.