CHAPTER ONE
A transformer is a magnetically coupled coil used in transmission of an electric power.
This coil may be electrically link, but not electrically linked as in two winding transformer.
It consists of primary winding and secondary winding which the number of turns varies depending on the type of transformer. Transformers are operated by the principle of mutual inductance between two separate coils wound on the same core.
There is also the step – up and step – down transformer. This work looks into the construction of a step – up auto transformer.
auto – transformer is the transformer that consists of only one is winding port of the being common to both primary winding and secondary winding.
That theory of an auto transformer and it operation is similar to that of the two winding transformer, it has high efficiency where cheap (because it used less copper) it is applicable where transformer ratio is little differs from unity.
1.2 PURPOSE
This transformer is a step – up transformer, it help in stepping up voltage, because of the primary winding function and the secondary winding function from the voltage rating to the normal rating is to step – up voltage in the transformer.
1.3 OBJECTIVE
This transformer consists of only one winding part of the common to both primary and secondary winding. It had high efficiency and uses less copper, it is applicable where transformer ratio is differ from unity. The primary winding is connected to the power source and the other winding are secondary winding it help the transformer in increase the voltage to the normal voltage rate.
1.4 SIGNIFICANCE
The R. Fienberg in “MODERN POWER TRANSFORMER PRACTICE” stated that a transformer has a significance rate that transformer machine in bringing down the voltage rate it’s the desire amount.
Transformer initially raises the generated voltage for efficient transmission over long distance and there after decrease the system voltage for local destruction and utilization.
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