yaappppeeeee !!! China has again shown their best engineering to make PPFC in cheapest way in the world !! I think we should need to learn ultra newest theory from them !!! If we make capacitor using that newest theory then how it will be look like ....... Have you any idea guys ......... !!!
BREAKING NEWS :
Use
STD13003 / MJE13003 Transistor for 5VSB in Primary side . It is not my theory - I have learned this valuable theory from great great china Engineer ...... !! Your power supply cost will be more more cheaper ......... !!