#10: Phasors as used in AC circuits

This is the first of our AC circuits lectures. It starts with a brief review of Thévenin and Norton circuits with an RC capacitor charge example. The concept of Root Mean Square (RMS) is introduced. AC waveforms are explored in the time domain and phasor domain. The video concludes with a brief look ahead to impedance and power in AC circuits.

[jonathanmvkhai]

00:13 Reviewing Thévenin & Norton
01:03 Eg. Combo Problem
05:52 Everything about Capacitor (ICE)
07:45 Everything about Inductor (ELI)
09:34 You are here: AC Power
10:14 Understanding the Cosine graph (Peak, Omega, Phase)
12:56 The meaning of RPM
13:49 RMS Voltage (Root Mean Square)
14:36 RMS & Voltage Peak (Visualizing RMS)
15:38 Formula for RMS
16:51 RMS Calculas-ly
17:39 I_RMS, P_RMS
18:47 Transposing The Graph into a new Dimension
19:20 Word of the Day: Phaser
20:39 Imaginary number (j)
21:07 Unit Circle & Trig
21:19 Euler’s Identity
22:00 Using Calculator: Complex Mode
22:45 Phaser is Vector. Scalar with Direction
23:49 Eg
24:38 RMS shows up again!
25:14 Polar Form, Rectangular Form
26:03 Expressing x, y in term of trig
Using Calculator to convert in between
27:17 Eg
28:14 Graphing in an Imaginary World
28:50 Upgrading Ohm’s and Power Law (Impedance)
31:01 A Glimpse to Future
31:58 Look ahead: Impedance
32:38 Creatures from Other Dimension
How to deal with them