A transformer is a device that converts the ac energy of a certain voltage level
into the ac energy of another voltage level with the same frequency by electromagnetic
induction. With the development of electronic technology, the product structure of the
electronic transformer industry has changed greatly, showing the diversity of product
types. The rapid development of international power electronics technology presents
the trend of high frequency, high power density and miniaturization, which requires
more and more performance indexes of electronic transformers. The processing
technology of semiconductor transformer, solid structure and coil structure of
semiconductor transformer are introduced.