With the event of information technological innovation and digitalization of electronic merchandise in the 21st century, chip-variety and miniaturized electronic transformers will slowly swap standard Digital transformers. The industry desire has promoted the development of electronic transformers towards lighter, thinner, and smaller kinds. At present, China's electronic transformer ... http://systurf58147.worldblogged.com/331300/strength-saving-warmth-dissipating-switching-ability-transformers