Location History:
- Kasawaki, JP (1997)
- Kawasaki, JP (1993 - 2002)
Company Filing History:
Years Active: 1993-2002
Title: Innovations by Tachio Yuasa
Introduction
Tachio Yuasa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of electronics, holding a total of 10 patents. His work primarily focuses on digital-analog conversion circuits and stabilized current mirror circuits, showcasing his expertise in low-power electronic designs.
Latest Patents
One of Yuasa's latest patents is a digital-analog conversion circuit capable of functioning at a low power supply voltage. This innovative circuit includes three resistor strings connected in series, a controller, and a switch group. The controller manages the switchover of the switch group based on a signal from the high-order bits of an input digital signal, resulting in an analog output that corresponds to these bits. Additionally, another controller adjusts the potentials of two variable voltage sources according to the low-order bits of the input digital signal, ensuring a constant potential difference across the resistor strings. This design allows for efficient analog output to an output terminal.
Another notable patent is the stabilized current mirror circuit. This circuit features an input-stage nMOS transistor and an output-stage nMOS transistor, along with an error amplifier that regulates the output current in response to changes in output potential. The design includes a current mirror circuit with pMOS transistors, ensuring that the circuit operates effectively under varying conditions. This innovation enhances the reliability and performance of current mirror circuits in electronic applications.
Career Highlights
Tachio Yuasa has been associated with Fujitsu Corporation, where he has contributed to various projects and innovations. His work has been instrumental in advancing the company's technological capabilities in the electronics sector. Yuasa's expertise and innovative mindset have positioned him as a key figure in the field.
Collaborations
Throughout his career, Yuasa has collaborated with notable colleagues, including Osamu Kobayashi and Atsushi Matsuda. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Tachio Yuasa's contributions to the field of electronics through his patents and innovations have made a significant impact. His work continues to influence the development of efficient electronic circuits, showcasing the importance of innovation in technology.