<p>说明：</p>
<p>分析基本放大电路要遵循“先静态，后动态”的原则，只有 Q点合适，动态分析才有意义。</p>
<p>直接耦合共射放大电路（B极输入，C极输出）</p>
<img alt="直接耦合共射放大电路" data-align="center" data-entity-type="file" data-entity-uuid="b0965c1b-5811-4d10-92ac-198ef669d02b" src="/sites/default/files/inline-images/01_18.png" />
<p>直流工作点：</p>
<img alt="直流工作点" data-align="center" data-entity-type="file" data-entity-uuid="eca81675-2908-4786-aa44-58fdab795426" src="/sites/default/files/inline-images/02_19.png" />
<p>阻容耦合共射放大电路（B极输入，C极输出）</p>
<img alt="阻容耦合共射放大电路" data-align="center" data-entity-type="file" data-entity-uuid="6b950d10-8a36-46b3-9729-048ffc547a16" src="/sites/default/files/inline-images/03_16.png" />
<p>直流工作点：</p>
<img alt="直流工作点" data-align="center" data-entity-type="file" data-entity-uuid="5e41c1ed-3dc6-4e53-a2e8-fb3a58437b83" src="/sites/default/files/inline-images/04_13.png" />
<p> </p>