A high-frequency transformer is a device that converts alternating current into high-frequency alternating current, consisting of two parts: an iron core and a winding. The winding is wound on the iron core, and the magnetic core in the winding is magnetized. By utilizing the change in inductance, high-frequency alternating current can be converted into low-frequency sinusoidal alternating current.

High frequency transformer is a device that converts high-frequency alternating current and plays an important role in power electronic devices. It converts DC voltage into AC voltage with extremely high frequency, low frequency, and high power, thereby achieving energy conversion and transmission.

High frequency transformers can be divided into two types: DC transformers and AC transformers. The winding of an AC transformer consists of several iron cores connected in series or parallel, which are filled with insulation material to make them proportional to the power supply voltage. The iron core of an AC transformer is composed of an insulation layer and enameled wire, which can be used as an electrical connection device and has characteristics that DC transformers do not possess. For example, both passive and active methods can be used as high-frequency power sources. In addition, the magnetic core of high-frequency transformers can be large or small, and the coil can also be thick or thin. Structurally, high-frequency transformers can be divided into two types: ordinary windings and special windings.

Ordinary windings are made by winding a coil around a magnetic core as the center; Special winding is formed by winding one or more magnetic cores around the iron core as the center. In practical applications, the two are often used in combination. High frequency transformers usually use special windings to meet the high-frequency performance requirements in specific situations.

High frequency transformers are composed of iron cores, windings, and insulation materials. After filling the iron core with insulating material, its magnetic permeability sharply decreases, resulting in magnetic loss. When the operating frequency of the magnetic core used in the high-frequency power supply is high, this loss is even greater. Therefore, in order to minimize the losses of high-frequency transformers, the operating frequency of the iron core should be kept as low as possible; In order to enable the insulation material to dissipate heat, its thickness should be appropriately increased.