Transformer (1)

Science

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Transformer

Is a device for changing the voltage of an alternating current (Va.c.)

A simple transformer

Is made up of laminated soft iron core which is wrapped by two insulated coils, the primary coil and the secondary coil

Types of transformers

- Step-up transformer - Step-down transformer

Structure of a simple transformer

Step-up transformer

Step-down transformer

Primary voltage (input) and secondary voltage (output) which crosses the step-up transformer

Primary voltage (input) across the primary coil is lower than the secondary voltage (output) across the secondary coil

Primary voltage (input) and secondary voltage (output) which crosses the step-down transformer

Primary voltage (input) across the primary coil is higher than the secondary voltage (output) across the secondary coil

Number of turns of the primary coil and the secondary coil in the step-up transformer

Number of turns of the primary coil is less than that in the secondary coil

Number of turns of the primary coil and the secondary coil in step-down transformer

Number of turns of the primary coil is more than that in the secondary coil

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