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22 Alternating Current.

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Presentation on theme: "22 Alternating Current."— Presentation transcript:

1 22 Alternating Current

2 What is the phase? Examples: RC & RL circuits

3 Phasors & Alternating-Current (AC)

4 Root-mean-square (rms)
Example : Average power P = I2R

5 Resistance and Reactance

6 Reactance & Phase Low-pass High-pass

7 Series R-L-C Circuit: Impedance
VL VR VC V

8 Series R-L-C Circuit: Phase
VL VR VC V f

9 Power in AC: Pure Resistor

10 Power in AC: General Case

11 Series Resonance: Frequency
When XL = XC , Z = Zmin = R, which occurs at (resonance frequency)

12 Resonance & Tuning 

13 Summary: Phasor & AC

14 Summary: Resistance & Reactance

15 Summary: R-L-C Circuit (series)

16 Summary: Power in AC

17 Homework Problems: 3, 8, 10, 16, 21, and 22

18 P3-Resitance & Reactance

19 P 7&8 Voltage & Current in C & L

20 P 10-RLC in Series

21 P 16-Power in AC

22 P 21&22-Series Resonance

23 Schedule (MWF) Wednesday Mar 3 Friday Mar 5 Monday Mar 8 Mar 10 Mar 12
Review Test 2 Lab Demo RC-const Ch19~21 Lab Midterm Labs done so far Lab Induction

24 Schedule (ThTr) Thursday March 4 Tuesday March 9 March 11 Review T2
Test 2 Lab Demo RC-const Test 2 Ch19~21 Lab Midterm Labs done so far Lab Induction


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