A Step Down Transformer is a device which converts high primary voltage to a low secondary voltage. In a Step Down Transformer, the primary winding of a coil has more turns than the secondary winding. Figure 1 below shows the winding representation of a typical Step-Down Transformer.

What is the example of step down transformer?

Applications of Step Down Transformer

It is used in the main adapters and chargers for cell phones, CD players and stereos. It can be used to step down the voltage level in transmission line. In welding machines it is used in reducing voltage and increasing current.

How do you identify a step down transformer?

Point to Remember:

If input supply is given on the low voltage winding, then it becomes a step-up transformer. Alternately, if the input supply is provided on the high voltage winding, the transformer becomes a step-down one.