1.以环形的结构，降低辐射
2.低功率损耗和减小外围组件的热效应
3.多种材质以适合宽广的频率范围
应用范围：计算机、电源供应、EMI\RFI抑制和宽带扼流。
1).Low radiation noise based on is toroid construction
2).Less power loss and minimum thermal effect to peripheral components
3).Various materials can meet with a wide range of frequency re