The principle and applications of piezoelectric transformers

A piezoelectric transformer is a high-performance electronic device with high conversion efficiency, high variable ratio, simple structure, small size, no electromagnetic noise, and good stability, so compared to traditional electromagnetic transformers it has obvious advantages. We present a brief introduction to the principle of the piezoelectric transformer, as well as an overview of the device structure and characteristics, current research status, and applications. Future development trends are also forecast.