Shin Nakagawa

Title: The Innovations of Shin Nakagawa

Introduction

Shin Nakagawa is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of power supply technology. With a total of nine patents to his name, Nakagawa has focused on developing innovative solutions that enhance the performance and efficiency of electrical systems.

Latest Patents

One of Nakagawa's latest patents is a switching power supply apparatus designed to achieve multiple objectives simultaneously. This invention aims to produce a voltage waveform that minimizes switching noise, providing a stable output voltage without the need for control mechanisms. It also addresses the instantaneous peak current requirements without saturating the core. This technology is particularly beneficial for audio equipment, as it improves the resonance-type Royer converter by incorporating a second inductor to cancel DC magnetic flux. The timing for the next cycle is determined by applying a center tap voltage of a transformer to a synchronous signal input terminal of a control IC, ensuring stable self-excited oscillation.

Another notable patent by Nakagawa is an isolated-type switching power supply apparatus. This invention includes a power supply connected to a transformer, along with a switching element that regulates the electric current through the primary coil. The design features a modulating circuit that adjusts the output on the secondary side of the transformer, along with a demodulating circuit that processes the output transferred to the primary side. The controlling circuit, located on the primary side, manages the switching element based on the demodulated output, enhancing the overall efficiency of the power supply system.

Career Highlights

Throughout his career, Shin Nakagawa has worked with notable companies such as Fidelix Y.K. and Mitsubishi Paper Mills Limited. His experience in these organizations has contributed to his expertise in power supply technologies and innovation.

Collaborations

Nakagawa has collaborated with esteemed colleagues, including Toshihito Maruyama and Shigeyoshi Suzuki. Their combined efforts have led to advancements in the field of electrical engineering and power supply systems.

Conclusion

Shin Nakagawa's innovative work in the realm of switching power supply technology has made a significant impact on the industry. His patents reflect a commitment to enhancing the efficiency and performance of electrical systems, particularly in audio applications. Nakagawa's contributions continue to influence the development of advanced power supply solutions.