Kei Mitsuyasu

Title: The Innovative Mind of Kei Mitsuyasu

Introduction

Kei Mitsuyasu, an accomplished inventor based in Osaka, Japan, has made significant contributions to the field of electrical engineering through his innovative patents. With a total of six patents to his name, Mitsuyasu's work emphasizes the advancement of lighting technology and power supply systems.

Latest Patents

Among his latest patents is the "Dimming lighting circuit and luminaire," which features a sophisticated dimming mechanism. This circuit includes a rectifier circuit, a phase detection circuit that outputs a dimming signal corresponding to the conduction phase angle of an AC voltage, and a DC-DC converter that supplies the light source with a DC current based on the dimming signal's level. Notably, if the conduction phase angle at power-on is below a predetermined angle, the phase detection circuit outputs a substitute signal for a specified duration, improving the functionality of traditional dimming systems.

Another significant patent is the "Power supply device and lighting apparatus using the same." This invention encompasses a transformer with a primary winding in series with a main switching element, which connects in parallel to a resonance capacitor and a sub-switching element. The secondary winding of the transformer interacts with a rectifying element and a resonance inductor. The unique design ensures that the waveform generated during operation resembles a protruding curve shape, thanks to the resonance phenomenon of the integrated components.

Career Highlights

Throughout his career, Mitsuyasu has worked with renowned companies such as Matsushita Electric Works, Ltd. and Panasonic Corporation. His experiences in these organizations have greatly influenced his innovative capabilities, allowing him to develop technologies that push the boundaries of modern lighting and power systems.

Collaborations

Mitsuyasu has collaborated with notable colleagues, including Katsunobu Hamamoto and Yoshifumi Kuroki. Their joint efforts have undoubtedly enhanced the innovation process, leading to the development of groundbreaking technologies in their respective fields.

Conclusion

Kei Mitsuyasu stands out as an influential figure in the realm of electrical engineering, with a robust portfolio of patents that reflect his commitment to innovation. His contributions in lighting technology and power supply systems continue to pave the way for future advancements, showcasing his remarkable prowess as an inventor.