With the development of data technological innovation and digitalization of electronic products in the twenty first century, chip-style and miniaturized Digital transformers will step by step swap traditional Digital transformers. The industry desire has promoted the development of electronic transformers toward lighter, thinner, and scaled-down ones. At present, China's Digital http://coupon-mall82716.blogpostie.com/12678598/strength-conserving-warmth-dissipating-switching-energy-transformers