Hiroshi Maruyama

Title: Hiroshi Maruyama: Innovator in Control Circuits

Introduction

Hiroshi Maruyama is a prominent inventor based in Matsumoto, Japan. He has made significant contributions to the field of control circuits and switching power sources. With a total of 13 patents to his name, Maruyama continues to push the boundaries of innovation in electrical engineering.

Latest Patents

Maruyama's latest patents include a control circuit designed to manage a switching element of a switching power source. This control circuit features a first protection unit that halts the principal current when it exceeds a first threshold value. Additionally, a second protection unit is included to stop the current over a longer duration when it surpasses a second threshold value, which is larger than the first. The first protection unit can also shorten the pulse width of a control pulse within one cycle of an oscillation signal. Furthermore, another patent focuses on controlling the ON and OFF periods in a switching cycle of a switching element, ensuring that the switching element is turned off when an overcurrent is detected after an invalidation period.

Career Highlights

Hiroshi Maruyama is currently employed at Fuji Electric Co., Ltd., where he applies his expertise in developing advanced control circuits. His work has been instrumental in enhancing the efficiency and reliability of switching power sources.

Collaborations

Maruyama collaborates with Takato Sugawara, a fellow innovator in the field. Their partnership has led to the development of cutting-edge technologies that address the challenges in electrical engineering.

Conclusion

Hiroshi Maruyama's contributions to control circuits and switching power sources exemplify his dedication to innovation. His patents reflect a deep understanding of electrical systems and a commitment to advancing technology.