This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Benefits of toroidal audio transformers
Toroidal transformers have number of significant advantages over conventional transformers such as
They are the biggest among efficiency transformers.
Sense of toroidal transformer magnetic field coincides with the direction of steel strip rolling.
Ring shape of toroidal core is considered