What is an Ideal Transformer? State some major differences between an ideal and real transformer.

The Ideal Transformer:

Ideal Transformer is a lossless device with an input winding and an output winding. 

Figure: An ideal transformer.

The major differences between an ideal and real transformer are as follows:

1. An ideal transformer’s core does not have any hysteresis and eddy current losses.
2. The magnetization curve of an ideal transformer is similar to a step function and the net mmf is zero.   
3. Flux in an ideal transformer stays in the core and  hence leakage flux is zero.   
4. The resistance of windings in an ideal transformer is zero.

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