# AC circuit analysis

Solving circuits with differential equations is a pain. If we impose a discipline on ourselves and only consider input signals that look like sinusoids, a whole new method of AC analysis emerges.

AC analysis introduction part 1

AC analysis introduction part 2

Sine and cosine come from circles

Sine and cosine from a rotating vector

Magnitude of a complex exponential

Natural and forced response $\qquad$ Special topics in AC analysis