Digital systems and design

What is transformer and how it works

What is transformer and how it works

This post answers the question “What is transformer and how it works?”. 

Transformer circuit is depicted on the figure below, and consist of the core with two coils (windings). Important characteristic here is amount of turns of the winding.

What is transformer and how it works
Ideal transformer

In the ideal transformer every turn of the winding links the same flux Φ(t), with the core μ= and v1=N1dΦdt, v2=N2dΦdt that leads to v1N1=v2N2.

In an ideal transformer total ampere-turns N1i1(t)+N2i2(t)=0, so v1(t)i1(t)=v2(t)i2(t). It means that the transformer does not store energy.

More educational content can be found at Reddit community r/ElectronicsEasy.