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电路如附件所示，用tina仿出来的开环增益都是负的，怎么确定相位裕量呢？
相位裕量，要仿真环路增益，要把直流回路和交流回路断开。
建议，参考一下Tim Green写的运放稳定性分析，里面有解释，以前论坛里有人上传过，您搜一下。
