[电路理论总复习资料~~~.ppt

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[电路理论总复习资料~~~.ppt

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[电路理论总复习资料~~~

谐振小结串联谐振（电压谐振）并联谐振（电流谐振）电压与电流同相位，?=0，cos ?=1 ,当?0L》R 阻抗Z最小:Z=R; 导纳Y 最小: 电路电流最大（U不变）；电路电流最小（U不变）能量互换只发生在电感和电容之间 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1.耦合电感的串联等效 L=L1+L2+2M 其中等效电感: （1）顺接去耦第7章耦合电路去耦法：受控源法与等效电路图法 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 其中等效电感：L=L1+L2-2M （2）反接去耦 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 同、异侧并联电路的等效电感：去耦去耦注：等效电感与电流参考方向无关。第7章耦合电路 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 第7章耦合电路去耦 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 去耦其伏安关系为：第7章耦合电路 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 去耦图7－16 空芯变压器电路原边输入阻抗Zi 原边自阻抗Z11 反映阻抗Zref (a) (b) 反映阻抗体现了由于耦合，副边对原边的影响。Zref的性质与Z22相反，即感性(容性)变为容性(感性)。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Prof