Development of an AA size energy transducer with micro resonators

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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  • Johnny M.H. Lee
  • Steve C.L. Yuen
  • Wen J. Li
  • Philip H.W. Leong


Original languageEnglish
Journal / PublicationProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2003
Externally publishedYes


TitleProceedings of the 2003 IEEE International Symposium on Circuits and Systems
LocationImperial Queen's Park Hotel
Period25 - 28 May 2003


This paper presents the preliminary design and experimental results of a standard AA size vibration-induced micro energy transducer which is integrated with a power-management circuit. The generator is a spring mass system which uses laser-micromachined copper springs to convert mechanical energy into electrical power by Faraday's Law of Induction. A power-management circuit is used to step up the AC output and act as a reservoir to store the electrical energy generated. Our goal is for the generator to provide 3V DC output with low input mechanical frequencies, and to produce enough power for low-power wireless applications. Potential applications for this micro power generator to serve as a power supply for infrared transmission and radio frequency transmission was proved to be possible with input frequencies below 100 Hz and amplitudes be 250 microns.

Research Area(s)

  • Micro energy transducer, Micro power generator, Power-management circuit