This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Shindengen Electric Manufacturing Company Limited. Active years: 2015.
Company Filing History:
Years Active: 2015
Title: Hitoshi Koiwai: Innovator in Power Factor Correction Circuits
Introduction
Hitoshi Koiwai is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of power factor correction circuits. His innovative work has led to the filing of a patent that addresses critical issues in voltage regulation.
Latest Patents
Koiwai holds a patent for a "Power factor correction circuit for providing protection against overvoltage." This invention is designed to reduce the ringing sound of a transformer that occurs when overshoot protection is activated. The circuit includes an output voltage control mechanism that maintains a constant voltage, ensuring that the capacitor charge voltage of an output capacitor aligns with a specified first voltage value. When this voltage reaches a second, higher voltage value, an overvoltage detecting unit is triggered. Additionally, a current limiting unit monitors the switching current through a switching element, adjusting the limiting value to manage the current effectively. This innovative approach enhances the reliability and performance of electrical systems.
Career Highlights
Hitoshi Koiwai is currently employed at Shindengen Electric Manufacturing Company Limited, where he continues to develop cutting-edge technologies in electrical engineering. His work at this esteemed company has allowed him to collaborate with other talented engineers and contribute to advancements in the industry.
Collaborations
Koiwai has worked alongside his coworker, Shigeru Hisada, to further enhance the capabilities of their projects. Their collaboration has fostered an environment of innovation and creativity, leading to the successful development of new technologies.
Conclusion
Hitoshi Koiwai's contributions to the field of power factor correction circuits exemplify his dedication to innovation and engineering excellence. His patent reflects a significant advancement in protecting electrical systems from overvoltage, showcasing his expertise and commitment to improving technology.