Yu Onishi

Title: The Innovative Contributions of Yu Onishi

Introduction

Yu Onishi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of safety devices for electrical circuits. His work focuses on enhancing the safety and reliability of electrical systems.

Latest Patents

One of Yu Onishi's key inventions is an electric leakage detecting device. This device is designed to shut off an AC electric circuit in the event of an electric leakage. The invention utilizes a digital comparator to generate a detection signal by comparing output signals from a zero-phase current transformer with positive and negative thresholds. A control signal generator then produces a control signal based on this detection signal. If an electric leakage state is detected, a judging device generates a judgment signal. Additionally, a delay counter creates a final control signal if the judgment signal is received continuously for a specified duration. The device also includes a reset counter that resets upon receiving the control signal and resets the judging device and delay counter if the control signal is not received within a designated time frame. Finally, a switch driving circuit is responsible for shutting off the AC electric circuit based on the final control signal.

Career Highlights

Yu Onishi is currently associated with New Japan Radio Co., Ltd., where he continues to innovate and develop new technologies. His work at the company has been instrumental in advancing electrical safety measures.

Conclusion

Yu Onishi's contributions to electrical engineering, particularly through his electric leakage detecting device, highlight his commitment to improving safety in electrical systems. His innovative spirit and dedication to his work make him a significant figure in the field.