Electric circuits : Source transformation

Electric circuits

1. EERI 215
ElectrotechniqueII
Learn unit 3.2
(Study guide pp. 10)
http://whatis.techtarget.com/definition/vacuum-tube-VT-electron-tube-or-valve

2. Menu
https://clmblog.info/depositphotos-stock-illustration-pizza-chef-logo-vector
EERI 215 LU 3.2 2
•Impedances in Series/Parallel
•Δ-Y Transformations: Frequency Domain
•Source Transformations: Frequency Domain
•Thevenin+ Norton: Frequency Domain
•NVM + MCM: Frequency Domain
•Phasor Diagrams

3. Impedances in Series/Parallel
3
2 IN PARALLEL
EERI 215 LU 3.2

4. Example 9.6 -Combining
Impedances in Series
4EERI 215 LU 3.2
Impedance and Kirchoff
See clip: LU3.2 Impedance of Passive Elements.mov

5. Assessment Problem 9.6
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_06
EERI 215 LU 3.2 5
Clip: AP9_6 (Nilsson&Riedel).mov

6. EERI 215 LU 3.2 6
Assessment Problem 9.6

7. EERI 215 LU 3.2 7
Assessment Problem 9.6

8. Impedance, Z& Admittance, Y
8Impedance
ResistanceReactance
[]XjR=+ Admittance
SusceptanceConductance
1
[S]YG jB
Z
==+ EERI 215 LU 3.2

9. Example 9.7 -Combining Impedances
in Series/Parallel
9EERI 215 LU 3.2

10. 10EERI 215 LU 3.2
Example 9.7 -Combining Impedances
in Series/Parallel
Table 9.1
ω= 200,000 rad/s
Table 9.1

11. 11EERI 215 LU 3.2
Example 9.7 -Combining Impedances
in Series/Parallel
Admittance branch 1:
Admittance branch 2:
Admittance branch 3:
Total admittance:

12. 12EERI 215 LU 3.2
Example 9.7 -Combining Impedances
in Series/Parallel

13. Assessment Problem 9.7
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_07
EERI 215 LU 3.2 13
Clip: AP9_7 (Nilsson&Riedel).mov

14. EERI 215 LU 3.2 14
Assessment Problem 9.7

15. EERI 215 LU 3.2 15
Assessment Problem 9.7

16. EERI 215 LU 3.2 16
Assessment Problem 9.7

17. Assessment Problem 9.8
EERI 215 LU 3.2 17
Clip: AP9_8 (Nilsson&Riedel).mov

18. EERI 215 LU 3.2 18
Assessment Problem 9.8

19. EERI 215 LU 3.2 19
Assessment Problem 9.8

20. Δ-Y Transformations: Frequency
Domain
20EERI 215 LU 3.2
∆-Y, Source Transformations, Theveninand Norton
See clip: LU3.2 Delta-Wye, Source Transformations,
Thevenin& Norton.mov

21. Assessment Problem 9.9
(Δ-Y Transformations in FD)
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_09
EERI 215 LU 3.2 21

22. EERI 215 LU 3.2 22
Assessment Problem 9.9
10 Ω
50 Ω
40 Ω Z
1 Z
2
Z
3

23. EERI 215 LU 3.2 23
Assessment Problem 9.9
I = V/Z

24. Source Transformations:
Frequency Domain
24EERI 215 LU 3.2

25. Example 9.9 –Source Transformation in FD
25EERI 215 LU 3.2
∆-Y, Source Transformations, Theveninand Norton
See clip: LU3.2 Delta-Wye, Source Transformations,
Thevenin& Norton.mov

26. Assessment Problem 9.10
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_10
EERI 215 LU 3.2 26

27. EERI 215 LU 3.2 27
Assessment Problem 9.10

28. EERI 215 LU 3.2 28
Assessment Problem 9.10

29. Thevenin+ Norton: Frequency Domain
29EERI 215 LU 3.2

30. Assessment Problem 9.11
(TheveninEquivalent in FD)
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31. EERI 215 LU 3.2 31
Assessment Problem 9.11

32. EERI 215 LU 3.2 32
Assessment Problem 9.11
I = V/R
2∟45
o
+
V
1
-
+
V
Th
-
(Voltage divider circuit)

33. EERI 215 LU 3.2 33
Assessment Problem 9.11

34. EERI 215 LU 3.2 34
Assessment Problem 9.11
10I
x= 0
I
x= 0

35. NVM: Frequency Domain (Example 9.11)
35EERI 215 LU 3.2
NVM (FD), MCM (FD) and Phasor Diagrams
See clip: LU3.2 NVM (FD), MCM (FD), PhasorDiagrams.mov

36. Assessment Problem 9.12
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_12
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37. EERI 215 LU 3.2 37
Assessment Problem 9.12

38. EERI 215 LU 3.2 38
Assessment Problem 9.12
Table 9.1
Table 9.1

39. MCM: Frequency Domain (Example 9.12)
391
I 2
I EERI 215 LU 3.2
Write down the mesh-current equations for figure 9.36.
Mesh 1:
Mesh 2:
Mesh 1 Mesh 2

40. Assessment Problem 9.13
[Pearson Mastering Engineering]
https://mediaplayer.pearsoncmg.com/assets/secs-Assessment_Problem09_13
EERI 215 LU 3.2 40

41. EERI 215 LU 3.2 41
Assessment Problem 9.13

42. EERI 215 LU 3.2 42
Assessment Problem 9.13

43. Phasor Diagrams
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44. Example 9.16 –Phasor Diagram: Capacitive Load
44EERI 215 LU 3.2
NVM (FD), MCM (FD) and Phasor Diagrams
See clip: LU3.2 NVM (FD), MCM (FD), PhasorDiagrams.mov

45. Announcements
•See the Programregarding a breakdown of the timeline.
•See the Scheduleregarding a breakdown of the objectives.
45EERI 215 LU 3.2