Here is an English article on high frequency transformers:
High frequency transformers are transformers that operate at frequencies in the tens to hundreds of kilohertz range. Due to the higher frequencies, the performance of traditional iron core transformers deteriorates significantly. Hence, high frequency transformers require special designs and materials.
The main characteristics of high frequency transformers are:
- They use insulators as cores, such as aluminium oxide (Al2O3) and ferrite materials.
- Each winding layer consists of many thin conductive strips, with insulation layers in between successive conductor strips.
- They use a multilayer winding structure where the windings are arranged like a cylinder in concentric layers.
- The wire gauges are thin, typically around 0.1mm.
- They have low losses and high efficiency, up to 98% or more.
- They are small in size and light in weight.
High frequency transformers are widely used:
- In power electronics conversions such as AC-DC or DC-DC converters
- In AC regulators for rectification, filtering circuits
-For pulsed power supply
- In wireless charging systems
- As pulse transformers in high frequency welding equipment
- For induction heating applications
-For high frequency driver applications
-For signal isolation
The above briefly outlines the characteristics and common applications of high frequency transformers. I hope this provides some useful references. Please excuse any deficiencies in the content.