%0 Journal Article %A Shiang-Hwua Yu and Po-Hsun Wu %D 2014 %J International Journal of Electronics and Communication Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 91, 2014 %T Two Kinds of Self-Oscillating Circuits Mechanically Demonstrated %U https://publications.waset.org/pdf/10000983 %V 91 %X This study introduces two types of self-oscillating circuits that are frequently found in power electronics applications. Special effort is made to relate the circuits to the analogous mechanical systems of some important scientific inventions: Galileo’s pendulum clock and Coulomb’s friction model. A little touch of related history and philosophy of science will hopefully encourage curiosity, advance the understanding of self-oscillating systems and satisfy the aspiration of some students for scientific literacy. Finally, the two self-oscillating circuits are applied to design a simple class-D audio amplifier. %P 1334 - 1338