In this article, an innovative power adaptor based on the asymmetrical pulse width modulation (PWM) flyback topology will be presented. Its benefits compared to other state-of-the-art topologies, such as the active clamp flyback, are analyzed in detail. It will also describe the control methods to achieve high efficiency and power density using zero-voltage switching (ZVS) and zero-current switching (ZCS) techniques over the full range of the input voltage and the output load, providing comprehensive guidelines for the practical design. Finally, we demonstrate the convenience of the proposed design methods with a 65 W adaptor prototype achieving a peak efficiency of close to 95% and a minimum efficiency of 93.4% at full load over the range of the input voltage, as well as a world-class power density of 22 W/inch3 cased.

No abstract

In this work, we presented the design and simulation of a new flux-controlled meminductor emulator based on a modified version of the well-known Antoniou’s inductor simulator circuit. The constitutive theoretical equations of meminductance are presented and subsequently correlated with the electrical behavior of Antoniou’s circuit, hence illustrating its practical meminductive behavior with a proper selection of feedback impedances. After that, the feasibility of a practical implementation using off-the-shelf devices is illustrated firstly for a two-state meminductor and secondly for a continuous-state meminductor by means of SPICE simulations. It was also demonstrated that this emulator can operate at different frequencies and input signals constituting one of the simplest and most versatile meminductor emulators to date.

No abstract

No abstract