Nanocrystalline transformer magnetic core has high saturation magnetic induction intensity, high permeability, low loss, low coercive force, in 1-100 KHZ range, use frequency is mainly used for the high frequency induction heating power supply, X-ray power supply, laser power supply, communications equipment power supply, electrolytic plating power supply, rechargeable power supply, frequency conversion power supply; Inverter welding machine, pulse transformer, uninterruptible power supply UPS, plasma cutting machine, switching power power transformer, etc.