![Transformer en z](https://kumkoniak.com/3.jpg)
![transformer en z transformer en z](https://homeomath2.imingo.net/images/transfz5.gif)
![transformer en z transformer en z](https://m.media-amazon.com/images/I/51wY53h4s0L._AC_SS450_.jpg)
This type of transformer is known commonly as an Isolation Transformer. Also, a transformer with a turns ratio of 1:1, does not change the voltage or current levels but instead isolates the primary circuit from the secondary side. Then audio transformers can be considered as either a step-up or step-down type, but rather than being wound to produce a specific voltage output, audio transformers are mainly designed for impedance matching. The turns ratio between the input and output wire coils provides either an increase or a decrease of the applied signal as it passes through the transformer. When an AC signal is applied to the primary input winding, a corresponding AC signal appears on the output secondary winding due to the inductive coupling of the soft iron core.
![Transformer en z](https://kumkoniak.com/3.jpg)