Sou Fujioka

Title: Sou Fujioka: Innovator in Switching Amplifier Technology

Introduction

Sou Fujioka is a notable inventor based in Neyagawa, Japan. He has made significant contributions to the field of electronics, particularly in the development of switching amplifiers. His innovative approach has led to the creation of a patented technology that enhances the performance of electronic devices.

Latest Patents

Sou Fujioka holds a patent for a switching amplifier that includes a PWM circuit, a driver, a switching output circuit, and an LPF. This invention is equipped with a fluctuation detection circuit that detects fluctuations in the power supply voltage. The circuit comprises detection resistors connected in series between a positive and a negative power supply. A fluctuating signal, referred to as RPL, occurs at a fluctuation detection terminal and is supplied to the inverted input terminal of a differential amplifier within a non-inverted amplifier circuit. The non-inverted amplifier circuit inverts the fluctuating signal RPL, mixes it with the input signal, amplifies the mixed signal, and supplies the amplified signal to the PWM circuit. This innovation is crucial for improving the stability and efficiency of electronic systems.

Career Highlights

Sou Fujioka is currently associated with Onkyo Corporation, a company renowned for its audio and video equipment. His work at Onkyo has allowed him to apply his inventive skills in a practical setting, contributing to the advancement of audio technology.

Collaborations

He has collaborated with notable colleagues such as Kazuhiro Hida and Joji Kasai, who share his passion for innovation in technology. Their teamwork has fostered an environment of creativity and technical excellence.

Conclusion

Sou Fujioka's contributions to the field of switching amplifiers exemplify the impact of innovative thinking in technology. His patent reflects a commitment to enhancing electronic performance, and his work continues to influence the industry.