Location History:
- Osaka, JP (2004)
- Sakai, JP (2007)
Company Filing History:
Years Active: 2004-2007
Title: Innovations by Yoshitaka Handa
Introduction
Yoshitaka Handa is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of electronics, particularly in the development of switching amplifiers and pulse width modulation circuits. With a total of 2 patents, Handa's work showcases his expertise and innovative spirit.
Latest Patents
One of Handa's latest patents is a switching amplifier that includes a PWM circuit, a driver, a switching output circuit, and a fluctuation detection circuit. This circuit is designed to detect fluctuations in the power supply voltage. The fluctuation detection circuit comprises detection resistors connected in series between a positive power supply and a negative power supply. A fluctuating signal occurring at a fluctuation detection terminal is supplied to the inverted input terminal of a differential amplifier within a non-inverted amplifier circuit. This circuit inverts the fluctuating signal, mixes it with the input signal, amplifies the mixed signal, and supplies the amplified signal to the PWM circuit.
Another significant patent is a pulse width modulation circuit that features pulse generation means powered by a first power supply. This circuit is charged with a first current and a second current, distributing a constant current to turn ON/OFF a switching element, thereby generating a pulse from a first output section. The pulse modulation means controls the charging while adjusting the distribution ratio between the first current and the second current based on an input signal, which changes the pulse width of the output pulse.
Career Highlights
Yoshitaka Handa is currently employed at Onkyo Corporation, where he continues to innovate and develop new technologies. His work has had a significant impact on the electronics industry, particularly in audio and signal processing.
Collaborations
Handa has collaborated with notable coworkers such as Kazuhiro Hida and Joji Kasai. Their combined expertise has contributed to the successful development of various projects within the company.
Conclusion
Yoshitaka Handa's contributions to the field of electronics through his patents and work at Onkyo Corporation highlight his role as an influential inventor. His innovative designs in switching amplifiers and pulse width modulation circuits continue to shape the industry.