Shigenobu Shimohagi

Title: The Innovations of Shigenobu Shimohagi: A Pioneer in Control Circuits

Introduction

Shigenobu Shimohagi, based in Kyoto, Japan, is an accomplished inventor known for his significant contributions to the field of power supply technology. With a total of three patents to his name, Shimohagi has demonstrated a commitment to innovating electrical circuits that enhance the performance and reliability of power supplies.

Latest Patents

Shigenobu's most recent patent focuses on a "Control Circuit for Switching Power Supply." This innovative power supply circuit integrates a control circuit alongside an output circuit, which includes an external circuit component. The configuration features a switching controller that manages both a switching transistor and a synchronous rectification transistor, functioning as critical switching elements. A degradation detection circuit plays a vital role by monitoring detection signals that correlate with the performance degradation of the circuit component. This allows the switching controller to adapt its operation based on the detected degree of degradation, ensuring efficient and reliable power supply performance.

In addition, Shimohagi has developed a "Protection Circuit" designed to enhance the safety and functionality of power supply systems. This circuit incorporates a first detector to compare monitored electric signals against a first threshold, and a second detector that performs a similar comparison with a second threshold. It features two memories for storing setting data associated with these thresholds. The interface circuit adds an external dimension, receiving data from a processor and facilitating data writing to both memory units under specific conditions, thereby optimizing the protection mechanism of the circuit.

Career Highlights

Shigenobu Shimohagi is currently employed at Rohm Co., Ltd., where he collaborates with a talented team to advance the company's technological offerings. His work at Rohm has been instrumental in the development of cutting-edge solutions in electronic components.

Collaborations

Throughout his career, Shimohagi has collaborated with esteemed colleagues such as Jun Maede and Isao Yamamoto. These partnerships have fostered a creative environment that encourages the exchange of ideas and the pursuit of innovative solutions in electronic design and power supply technology.

Conclusion

Shigenobu Shimohagi's contributions through his patents and collaborative efforts at Rohm Co., Ltd. underscore his role as a significant figure in the realm of electrical engineering. As technology continues to advance, Shimohagi's innovations serve as a testament to the ongoing evolution of power supply systems, promising enhanced efficiency and reliability for future applications.