Circuit-> Chapter 7 First-Order Circuits

First-Order Circuits

• 7.1 Introduction
• 总结
• 例题
• 7.2 The Source-Free(无源) RC Circuit
• 7.3 The Source-Free RL Circuit
• 7.4 Singularity Functions
• 7.5 Step Response(阶跃) of RC Circuit
• 7.6 Step Response of RC Circuit
• 7.7 Complete Response

7.1 Introduction

Two types of simple circuits:a circuit comprising a resistor and capactior and a circuit comprising a resistor and an inductor.
These are called RC and RL circuits,respectively.

注释:损变

Applying Kirchhoff’s laws to purely resistive circuits results in algebraic equations.
While applying Kirvhhoff’s laws to RC and RL circuits produces differential equations.

初始条件的选择,0-的时候应该达到稳态,即0处应该连续.

注释:电荷守恒.

注释:磁通守恒.
由于电阻的电压电流可以跃变,电容不可以.

总结

例题

先换路定律$u_c0+或l_0+(u_c0+=uv))$uc​0+或l0​+(uc​0+=uv))

换路定律

7.2 The Source-Free(无源) RC Circuit

7.3 The Source-Free RL Circuit

7.4 Singularity Functions

7.5 Step Response(阶跃) of RC Circuit

7.6 Step Response of RC Circuit

7.7 Complete Response