Tooru Nakajima

Title: Tooru Nakajima: Innovator in Power Supply Technology

Introduction

Tooru Nakajima is a notable inventor based in Narashino, Japan. He has made significant contributions to the field of power supply technology, holding a total of four patents. His work focuses on improving the efficiency and cost-effectiveness of switching power supply circuits.

Latest Patents

One of Nakajima's latest patents is a switching power supply circuit and frequency converter. The objective of this invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit. This innovation aims to reduce power loss, especially when the receiving voltage is high, thereby providing a small and inexpensive switching power supply circuit. The design includes a DC voltage section with two or more capacitors connected in series and a PWM control circuit that receives DC power supply from the DC voltage section. This circuit performs switching control on the primary side of a transformer to output a DC voltage of different specifications. The starting resistor for the PWM control circuit is connected to a connection point of the capacitors.

Career Highlights

Throughout his career, Tooru Nakajima has worked with prominent companies such as Hitachi Industrial Equipment Systems Co., Ltd. and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in power supply technologies.

Collaborations

Nakajima has collaborated with notable coworkers, including Satoshi Ibori and Masayuki Hirota. Their combined efforts have further advanced the innovations in the field of power supply circuits.

Conclusion

Tooru Nakajima's contributions to power supply technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the efficiency and design of switching power supply circuits.