说明：  基于mos管的的RC吸收电路，采用真实器件参数，做到基本无尖峰且冲击电流最小，保持开关管最小应力的同时使吸收回路功率最小！！
(Based RC mos tube absorption circuit, using the real device parameters, so that almost no impact on the current peak and minimum hold switch tube minimum stress while making minimal absorption circuit power! !)