1. Slide 1

 2. Piezoelectricity

 3. Slide 3

 4. Slide 4

 5. Slide 5

 6. Electro-mechanical Analogies

 7. What is a Piezoelectric Transformer?

 8. Equivalent Circuit of a PT (for One Resonant Mode, Close to Resonant Frequency)

 9. Equivalent Circuits of a PT (for One Resonant Mode, Close to Resonant Frequency)

10. Input output voltage transfer ratio

11. Slide 11

12. Slide 12

13. Slide 13

14. Slide 14

15. Slide 15

16. Slide 16

17. Slide 15

18. Slide 16

19. Characteristics of Piezo transformers

20. Slide 18

21. Slide 19

22. Generic Characteristics

23. Experimental Results

24. Slide 22

25. Alternative PTs Drives

26. Steady-State Current and Voltage Waveforms of the ZVS PT Inverter

27. Step 1: Normalized load factor Q and frequency range

28. Slide 26

29. Slide 27

30. Slide 28

31. Slide 29

32. Slide 30

33. Slide 31

34. Slide 32

35. Slide 33

36. Slide 34

37. Slide 35

38. Slide 34

39. Slide 33

40. Slide 34

41. Slide 35

42. AC-DC Converters DC-DC converters

43. Slide 35

44. AC-DC Converters DC-DC converters

45. Slide 37

46. Experimental and Simulation Results

47. Experimental and Simulation Results

48. Power Handling Capability

49. Slide 41

50. Slide 42

51. Slide 43

52. Piezoelectric Transformer for High Voltage Application

53. Transfer Function

54. The Proposed Method

55. Experimental Setup for Resonant Frequency Tracking

56. Piezoelectric Transformer

57. HV square wave supply

58. Voltage Doubler Rectifier

59. Comparators

60. PLL

61. Biasing Network

62. The System With PLL Control.

63. Concluding Remarks

64. Slide 56