要求变压器铁芯具有低的高频损耗，高动态磁导率，高饱和磁感应强度和低的剩磁比。
So the transformer core material is required to be the one with properties of low losses at high frequency, high dynamic permeability, high saturation induction and low remanence.
一个环形变压器的铁芯将更好地使用，以尽量减少核心的高频损失。
The use of a toroidal transformer with a ferrite core will be better to minimize the HF losses in the core.
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