This inventor holds 3 USPTO granted patents. Top assignee: Pioneer Electronic Corporation. Active years: 1982-1985.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1982-1985
Title: Masamichi Yumino: Innovator in Amplifier Circuit Design
Introduction
Masamichi Yumino is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electronics, particularly in amplifier circuit design. With a total of 3 patents to his name, Yumino's work has garnered attention for its innovative approaches to reducing distortion in audio amplification.
Latest Patents
Yumino's latest patent focuses on a push-pull amplifier circuit utilizing bipolar transistors. This design effectively eliminates non-linear distortion caused by the base-emitter voltages of the amplifying transistors without relying on negative AC feedback. The circuit detects variations in the DC output level at the output terminal and feeds this information back to the input side, significantly improving stability at very low frequencies. The first amplifier stage consists of a first transistor with an input signal applied to its base and a second transistor whose base is connected to the output of the first transistor. The second transistor is of the opposite conductivity type to the first. A current mirror circuit supplies a constant ratio of currents to both transistors. A second amplifying stage mirrors this construction, driving a load through the current flowing in both stages. The circuit's output variations are detected to provide a DC feedback voltage, enhancing the performance of the amplifier.
Career Highlights
Masamichi Yumino is currently employed at Pioneer Electronic Corporation, where he continues to innovate in the field of electronics. His work has been instrumental in advancing amplifier technology, making significant impacts in audio quality and performance.
Collaborations
Yumino has collaborated with notable colleagues, including Akio Ozawa and Susumu Sueyoshi. Their combined expertise has contributed to the development of cutting-edge technologies in the electronics industry.
Conclusion
Masamichi Yumino's contributions to amplifier circuit design exemplify the spirit of innovation in electronics. His patents reflect a commitment to enhancing audio performance and reducing distortion, solidifying his reputation as a leading inventor in his field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile