Location History:
- Daitou, JP (1998)
- Daido, JP (2009)
- Yao, JP (2010 - 2013)
Company Filing History:
6 out of 8,780 
3 out of 306 
1 out of 3,593 
Years Active: 1998-2013
Title: Ryuji Yamamoto: Innovator in Power Supply Circuits
Introduction
Ryuji Yamamoto is a notable inventor based in Yao, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of power supply circuits. With a total of 7 patents to his name, Yamamoto's work has had a considerable impact on the industry.
Latest Patents
Yamamoto's latest patents include innovative designs such as a power supply circuit using amplifiers and a current voltage converter aimed at improving ripple removal rates and differential balance. This power supply circuit features a power transistor, a differential amplifier, an I/V converter circuit, and an inverting amplifier. The differential amplifier consists of two current paths, each with a resistor element, current mirror transistor, and control transistor connected in series. Additionally, the circuit incorporates a phase compensating capacitor element and a ripple removal rate improving capacitor element, enhancing its overall performance.
Another significant patent involves a power supply circuit that switches from a series regulator section to a switching regulator section. This design includes a feedback loop that temporarily opens to maintain output stability while charging a phase compensating capacitor of the switching regulator section.
Career Highlights
Throughout his career, Ryuji Yamamoto has worked with prominent companies such as Sanyo Electric Co., Ltd. and Sanyo Semiconductor Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Yamamoto has collaborated with talented individuals in the field, including Kazunori Nohara and Tomoshi Yoshida. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Ryuji Yamamoto is a distinguished inventor whose work in power supply circuits has advanced the field of electrical engineering. His innovative patents and collaborations with industry professionals highlight his commitment to technological progress.