The most important point is that it has low cost (the one I use is 0.9 RMB), can be wound by machine, is efficient, and commonly uses UU9.8 or UU10.5;
Product applications:LED light load switch uninterruptible power supply
Product applications: Uninterrupted current of LED light load switch
Product applications: Power switch circuit for adapters and chargers
Core material: mainly nanocrystalline; wire material: not discussed here;
Compared to UF, there is not much advantage in terms of voltage resistance: I came up with my own idea because I have seen many magnetic ring common mode circuits separated by cable ties,
