High frequency soft-switching conversion is an important subject of power electronics and switching power supply.

软开关，高频化是电力电子学，也是开关电源的重要研究方向。

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Large power frequency conversion water cooling motor, low noise, high speed and good durability.

才用恒功率水冷变频主轴，转速快，噪音小，寿命长。

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For RF PA, always require it can output a certain power within a range of frequency, at the same time meeting the system nonlinear requirements and have high conversion efficiency.

射频功率放大器总是要求在一定频率范围内输出一定的功率，同时满足系统的线性度和高效率要求。

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