Kouhei Yamada

Title: Kouhei Yamada: Innovator in Voltage Detection and DC-DC Converter Control

Introduction

Kouhei Yamada is a prominent inventor based in Matsumoto, Japan. He holds a total of 18 patents, showcasing his significant contributions to the field of electrical engineering. His innovative work primarily focuses on methods and circuits for voltage detection and control in power systems.

Latest Patents

Yamada's latest patents include an "AC input voltage interruption detection method and circuit." This invention features a selector circuit that chooses between a class upper-limit voltage and a class lower-limit voltage as a reference for a comparator. A control logic generates count-up or count-down signals based on the comparator's output. An up/down counter then counts accordingly, while a digital-analog converter outputs the selected voltages based on the counter's digital value. Additionally, he developed a "DC-DC converter control method and DC-DC converter control circuit." This invention enhances the transient response of output voltage during load fluctuations in a PWM-controlled switching power source. It includes a minimum pulse width detector circuit that maintains output voltage stability during load changes.

Career Highlights

Throughout his career, Kouhei Yamada has worked with notable companies such as Fuji Electric Co., Ltd. and Fuji Electric Systems Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Yamada has collaborated with esteemed colleagues, including Satoshi Sugahara and Kenichi Nishijima. Their teamwork has likely fostered an environment of creativity and innovation, leading to the development of groundbreaking technologies.

Conclusion

Kouhei Yamada's contributions to electrical engineering through his patents and collaborations highlight his role as a significant innovator in the field. His work continues to influence advancements in voltage detection and control systems.