1. Chapter 2: AC Circuit
MOHD ASRI BIN JUSOH

2. Chapter 2.4: Admittance & Susceptance, Parallel AC Network

3. Admittance & Susceptance
- How well an ac circuit allow current flow in the circuit.
- The larger its value, the larger current flow.
- Unit: Siemens (S)

4. Admittance & Susceptance (Cont…)

5. Admittance & Susceptance (Cont…)
- For 2 impedance in parallel
- For 3 parallel impedance

6. Admittance & Susceptance (Cont…)
- Admittance for resistance

7. Admittance & Susceptance (Cont…)
- Is a measure of how susceptible an element is to passage of current through it.

8. Admittance & Susceptance (Cont…)
- Admittance for inductor

9. Admittance & Susceptance (Cont…)
- Admittance for capacitor

10. Admittance & Susceptance (Cont…)
- Admittance diagram

11. Admittance & Susceptance (Cont…)

12. Parallel AC Network
The voltage E is the same across parallel network.

13. Parallel AC Network (Cont…)
R-L
- Phasor notation

14. Parallel AC Network (Cont…)
R-L (cont…)
- ZT

15. Parallel AC Network (Cont…)
R-L (cont…)
- ZT (cont…)

16. Parallel AC Network (Cont…)
R-L (cont…)
- I

17. Parallel AC Network (Cont…)
R-L (cont…)
- IR and IL

18. Parallel AC Network (Cont…)
R-L (cont…)
- IR and IL(cont…)

19. Parallel AC Network (Cont…)
R-L (cont…)
- Phasor diagram
E are in phase with IR & leads IL with 90ᴼ
I lags E by 53.13ᴼ

20. Parallel AC Network (Cont…)
R-L (cont…)
- PT

21. Parallel AC Network (Cont…)
R-L (cont…)
- pf

22. Parallel AC Network (Cont…)
R-C
- Phasor notation

23. Parallel AC Network (Cont…)
R-C (cont…)
- ZT

24. Parallel AC Network (Cont…)
R-C (cont…)
- ZT (cont…)

25. Parallel AC Network (Cont…)
R-C (cont…)
- E

26. Parallel AC Network (Cont…)
R-C (cont…)
- IR and IC

27. Parallel AC Network (Cont…)
R-C (cont…)
- IR and IC(cont…)

28. Parallel AC Network (Cont…)
R-C (cont…)
- Phasor diagram
E are in phase with IR & lags IC with 90ᴼ
I leads E by 53.13ᴼ

29. Parallel AC Network (Cont…)
R-C (cont…)
- Time domain

30. Parallel AC Network (Cont…)
R-C (cont…)
- PT

31. Parallel AC Network (Cont…)
R-L (cont…)
- pf

32. Parallel AC Network (Cont…)
R-L-C
- Phasor notation

33. Parallel AC Network (Cont…)
R-L-C (cont…)
- ZT

34. Parallel AC Network (Cont…)
R-L-C (cont…)
- ZT (cont…)

35. Parallel AC Network (Cont…)
R-L-C (cont…)
- I

36. Parallel AC Network (Cont…)
R-L-C (cont…)
- IR, IL and IC

37. Parallel AC Network (Cont…)
R-L-C (cont…)
- IR, IL and IC (cont…)

38. Parallel AC Network (Cont…)
R-L-C (cont…)
- Phasor diagram
E are in phase with IR, leads IL with 90ᴼ & lags IC with 90ᴼ
I lags E by 53.13ᴼ

39. Parallel AC Network (Cont…)
R-C (cont…)
- Time domain

40. Parallel AC Network (Cont…)
R-L-C (cont…)
- Time domain (cont…)

41. Parallel AC Network (Cont…)
R-L-C (cont…)
- PT

42. Parallel AC Network (Cont…)
R-L-C (cont…)
- PT (cont…)

43. Parallel AC Network (Cont…)
R-L (cont…)
- pf

44. Parallel AC Network (Cont…)
Current divider rule

45. Parallel AC Network (Cont…)