Keiichi Yoshisaka

Title: **Innovator Keiichi Yoshisaka: Pioneering Advances in Electric Power Supply Circuits**

Introduction

Keiichi Yoshisaka, an accomplished inventor based in Osaka, Japan, has made significant contributions to the field of electrical engineering. With a remarkable portfolio of 8 patents, he continues to innovate in the realm of electric power supply systems, demonstrating both creativity and technical expertise.

Latest Patents

Yoshisaka's latest inventions include groundbreaking technologies that enhance the efficiency and functionality of electric power supply circuits. One of his notable patents is focused on an electric power supply circuit designed to prevent an increase in ripple voltage of a capacitor within a smoothing circuit. This innovation enables the use of compact capacitors and reduces costs associated with capacitors in circuits that perform Pulse Amplitude Modulation (PAM) control using a switching element. The circuit comprises a bridge rectifier, a two-capacitor smoothing circuit, and a PAM control section that ensures optimal operation through phase difference detection and waveform correction.

Another significant patent involves a power conversion apparatus that precisely controls the output of an inverter based on power value rather than just current measurement. This invention includes a converter circuit and an inverter circuit, leading to enhanced operational efficiency by detecting input current and voltage to calculate power value, ultimately improving the inverter circuit's output control.

Career Highlights

Keiichi Yoshisaka is currently employed at Daikin Industries, Ltd., where he applies his expertise to develop innovative solutions in electric power technologies. His work significantly impacts the performance and efficiency of electric systems in various applications. Throughout his career, he has focused on advancing technologies that enhance energy efficiency and reliability.

Collaborations

At Daikin Industries, Yoshisaka collaborates with talented coworkers, including Keisuke Shimatani and Masakazu Katou. Together, they contribute to the company's ongoing commitment to innovation, enhancing Daikin's reputation as a leader in technology and solutions in the industry.

Conclusion

With a robust portfolio of patents and a steadfast commitment to innovation, Keiichi Yoshisaka continues to lead advancements in electric power supply technologies. His contributions not only represent significant technical achievements but also embody the spirit of innovation, paving the way for future developments in the field.