Lecture 12: RLC Circuits – Part Deux

Nilsson & Riedel 8.3-8.4

ENG17 (Sec. 2): Circuits I Spring 2014 May 6, 2014 1

Overview

• Natural Response – Critically Damped • Step Response in Parallel RLC • Series RLC 2

Critically Damped

3

Recap

Overdamped Underdamped Critically Damped 4

Overview

• Natural Response – Critically Damped • Step Response in Parallel RLC • Series RLC 5

Step Response

6

Example

Initial Energy = 0 J At t = 0: • OPEN switch • I = 24 mA • R = 400 Ω 7

Overview

• Natural Response – Critically Damped • Step Response in Parallel RLC • Series RLC 8

Series RLC: Natural Response

9

Example: Natural Response

10

Series RLC: Step Response

11

Example: Step Response

12

Note

13

Overview

• Natural Response – Critically Damped • Step Response in Parallel RLC • Series RLC 14