Author : Annalisa Milella Donato Di Paola and Grazia Cicirelli
ISBN-13 : 978-953-307-041-4
Number of pages : 298
The idea of a piezoelectric transformer (PT) was first implemented by Rosen (Rosen, 1956), as shown in Fig.1. It used the coupling effect between electrical and mechanical energy of piezoelectric materials. A sinusoidal signal is used to excite mechanical vibrations by the inverse piezoelectric effect via the driver section. An output voltage can be induced in the generator part due to the direct piezoelectric effect. The PT offers many advantages over the conventional electromagnetic transformer such as high power-to-volume ratio, electromagnetic field immunity, and nonflammable.
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