The small introductory course on AC voltage is first of all about what AC voltage actually is, about mixed forms that are no longer pure AC voltage and how the level of the voltage is specified.

0:00 - Introduction
1:05 - Period and Frequency
1:44 - Charge transport
2:53 - Definition of pure AC voltage
3:26 - Mixed forms
4:34 - Separation of the DC component
5:51 - measurement
6:55 - rectified value
7:46 - RMS value
9:37 - Examples