Yue Ma

Title: Innovations by Yue Ma in Power Supply Technology

Introduction

Yue Ma is an accomplished inventor based in Hong Kong, CN. He has made significant contributions to the field of electrical engineering, particularly in the design of power supply circuits. His innovative approach has led to the development of a unique patent that enhances the efficiency of switched-mode power supplies.

Latest Patents

Yue Ma holds a patent for an "Active Variable Inductor Circuit." This invention utilizes a primary winding of a transformer instead of a traditional inductor in a switched-mode power supply. The secondary winding is driven by a current generated from a negative inductance circuit. This design allows for an increase in the equivalent inductance value of the primary windings when reverse current flows. The invention includes a steady-state detector that activates a steady signal, closing a switch to turn on the reverse current from an operational amplifier when the output voltage remains within predetermined limits. This mechanism effectively increases inductance, thereby reducing ripple during steady state. In response to output transients, the steady signal is deactivated, and the switch is opened to halt current flow through the transformer secondary. This adjustment reduces primary inductance, allowing current to flow more rapidly to the output, which helps suppress transients. The design also incorporates resistor and capacitor networks around the operational amplifier for tuning inductance modulation.

Career Highlights

Yue Ma is currently employed at the Hong Kong Applied Science and Technology Research Institute Company Limited. His work at this esteemed institution has allowed him to focus on cutting-edge research and development in power supply technologies. His innovative contributions have positioned him as a key figure in the advancement of electrical engineering.

Collaborations

Yue Ma collaborates with talented colleagues, including Danting Xu and Chengyong Li. These partnerships foster a creative environment that encourages the exchange of ideas and enhances the development of innovative technologies.

Conclusion

Yue Ma's contributions to the field of power supply technology through his patent for an active variable inductor circuit demonstrate his commitment to innovation. His work not only improves efficiency but also addresses critical challenges in electrical engineering.