Hyung Dong Roh

Title: Hyung Dong Roh: Innovator in Circuit Design

Introduction

Hyung Dong Roh is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of electrical engineering, particularly in circuit design. With a total of 2 patents, his work focuses on enhancing the efficiency and precision of electronic components.

Latest Patents

One of his latest patents is a "Switched capacitor circuit with reduced leakage current." This innovative circuit prevents leakage current by equalizing voltages at nodes where leakage current tends to flow during a sampling mode. It also minimizes voltage drop caused by leakage current in an integrating mode, thereby preventing errors in the output signal. Another notable patent is the "Band-gap reference voltage generator for low-voltage operation and high precision." This generator minimizes voltage drop by connecting resistors in parallel to bipolar transistors. It cancels temperature dependence by properly adjusting a resistor in the output stage, ensuring a stable reference voltage that remains unaffected by temperature changes, even with low power supply voltage.

Career Highlights

Hyung Dong Roh has worked with reputable organizations, including the Electronics and Telecommunications Research Institute and the Industry-University Cooperation Foundation at Hanyang University. His experience in these institutions has allowed him to develop and refine his innovative ideas in circuit design.

Collaborations

Throughout his career, he has collaborated with notable colleagues such as Jeong Jin Roh and Jong Kee Kwon. These partnerships have contributed to the advancement of his research and inventions.

Conclusion

Hyung Dong Roh's contributions to circuit design through his patents demonstrate his commitment to innovation and precision in electrical engineering. His work continues to influence the field and inspire future advancements.