Alexander-Sadiku 
Fundamentals of Electric Circuits
| Chapter 8 | |
| Second-Order Circuits | 
Second-Order
Circuits
Chapter 8
| 8.1 Examples of 2nd order RCL circuit | |
| 8.2 The source-free series RLC circuit | |
| 8.3 The source-free parallel RLC circuit | |
| 8.4 Step response of a series RLC circuit | |
| 8.5 Step response of a parallel RLC | 
8.1 Examples of Second
Order RLC circuits (1)
| What is a 2nd order circuit? | |
8.2 Source-Free Series
RLC Circuits (1)
8.2 Source-Free
Series
 RLC Circuits (2)
| Method will be illustrated | |
| during the lecture | 
8.2 Source-Free Series
RLC Circuits (3)
8.2 Source-Free Series
RLC Circuits (5)
| Example 1 | |
| If R = 10 Ω, L = 5 H, and C = 2 mF in 8.8, find α, ω0, s1 and s2. | |
| What type of natural response will the circuit have? | |
8.2 Source-Free Series
RLC Circuits (6)
| Example 2 | |
| The circuit shown below has reached steady state at t = 0-. | |
| If the make-before-break switch moves to position b at t = 0, calculate i(t) for t > 0. | 
8.3 Source-Free Parallel
RLC Circuits (1)
8.3 Source-Free Parallel
RLC Circuits (2)
8.3 Source-Free Parallel
RLC Circuits (3)
| Example 3 | |
| Refer to the circuit shown below. Find v(t) for t > 0. | 
8.4 Step-Response Series
RLC Circuits (1)
8.4 Step-Response Series
RLC Circuits (2)
8.4 Step-Response Series
RLC Circuits (3)
| Example 4 | |
| Having been in position for a long time, the switch in the circuit below is moved to position b at t = 0. Find v(t) and vR(t) for t > 0. | 
8.5 Step-Response
Parallel 
RLC Circuits (1)
8.5 Step-Response
Parallel 
RLC Circuits (2)
8.5 Step-Response
Parallel 
RLC Circuits (3)
| Example 5 | |
| Find i(t) and v(t) for t > 0 in the circuit shown in circuit shown below: |