• What are Phasors?
• Phasors are complex algebraic quantities used to represent sinusoidal signals for purposes of analysis.
• Why do you use phasors?
• You use phasors to eliminate solving differential equations.  Instead, you do analysis using complex arithmetic and some vector style analysis.
• A Simple AC circuit- the RC filter - an example of using phasors.

Assignments

• We are going to move on to Chapter 9, although we can later come back to Chapter 5 (Operational Amplifier Circuits).  We are going to generalize some of the techniques from Chapter 4 (and other DC circuit techniques) to AC circuits (i.e. circuits with sinusoidal excitation - voltage and current sources).  We will develop some very useful tools that you will need in the many of your later courses.