1. Lecture 10: RL & RC Circuits Nilsson 7.1 – 7.4
ENG17 : Circuits I
Spring 2015
April 30, 2015

2. Recap – Inductors / Capacitors

3. Overview Natural Response Step Response General Solution RL Circuits
RC Circuits
Step Response
General Solution

4. Natural Response
Currents and voltages that arise from an inductor or capacitor immediately after being disconnected from a DC (direct current) source.

5. Current in RL Circuit
After Open Switch

6. Time Constant

7. Voltage in RC Circuit
After Switching

8. Overview Natural Response Step Response General Solution RL Circuits
RC Circuits
Step Response
General Solution

9. Step Response
Currents and voltages that arise when energy is being acquired by an inductor or capacitor due to the sudden application of a dc voltage or current source.

10. Step Response in RL Circuit

11. Step Response in RC Circuit

12. Overview Natural Response Step Response General Solution RL Circuits
RC Circuits
Step Response
General Solution

13. Generalized Solution

14. RL Circuit Example

15. RC Circuit Example

16. Example - RL
Find i(t), v(t)

17. Example - RC
Find vo(t), io(t)

18. Recap Natural Response Step Response General Solution RL Circuits
RC Circuits
Step Response
General Solution