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Actuators 2016, 5(2), 12; doi:10.3390/act5020012

Piezoelectric Transformers: An Historical Review

Micromechatronics, Inc., 200 Innovation Blvd. Suite 155, State College, PA 16803, USA
Academic Editor: Kenji Uchino
Received: 15 November 2015 / Revised: 18 April 2016 / Accepted: 20 April 2016 / Published: 26 April 2016
(This article belongs to the Special Issue Piezoelectric Actuators)

Abstract

Piezoelectric transformers (PTs) are solid-state devices that transform electrical energy into electrical energy by means of a mechanical vibration. These devices are manufactured using piezoelectric materials that are driven at resonance. With appropriate design and circuitry, it is possible to step up and step down the voltages between the input and output sections of the piezoelectric transformer, without making use of magnetic materials and obtaining excellent conversion efficiencies. The initial concept of a piezoelectric ceramic transformer was proposed by Charles A. Rosen in 1954. Since then, the evolution of piezoelectric transformers through history has been linked to the relevant work of some excellent researchers as well as to the evolution in materials, manufacturing processes, and driving circuit techniques. This paper summarizes the historical evolution of the technology. View Full-Text
Keywords: piezoelectric transformer; piezoelectric-based power supply; non-magnetic transformers piezoelectric transformer; piezoelectric-based power supply; non-magnetic transformers
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Vazquez Carazo, A. Piezoelectric Transformers: An Historical Review. Actuators 2016, 5, 12.

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