In J Chung

Title: In J Chung: Innovator in High Voltage Zinc Oxide Varistor Technology

Introduction

In J Chung is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of electrical engineering, particularly in the development of high voltage zinc oxide varistors. His innovative approach has led to advancements in circuit protection technologies.

Latest Patents

In J Chung holds a patent for a "Fabrication method for high voltage zinc oxide varistor." This method involves producing a zinc oxide varistor, which is a voltage-current non-linear type of resistor. The varistor includes zinc oxide as the primary ingredient, with bismuth oxide or manganese dioxide as additives. The invention outlines a process that includes sintering a zinc oxide composition lacking bismuth oxide at temperatures between 1200°C and 1350°C. This process is effective in forming a primary sintered body. Following this, the primary sintered body is heat-treated with a metal oxide paste containing mostly bismuth oxide at temperatures ranging from 1000°C to 1200°C. This step is crucial for diffusing the metal oxide paste to the grain boundaries of the zinc oxide grains.

Career Highlights

In J Chung is affiliated with the Korea Institute of Science and Technology, where he continues to engage in research and development. His work has been instrumental in enhancing the performance and reliability of circuit protection devices.

Collaborations

In his career, In J Chung has collaborated with notable colleagues, including Myung Hwan Oh and Kyung Jae Lee. These collaborations have fostered a productive research environment, leading to innovative solutions in the field.

Conclusion

In J Chung's contributions to the field of high voltage zinc oxide varistors exemplify his dedication to innovation and technology. His patented methods are paving the way for advancements in circuit protection, showcasing the importance of research and collaboration in engineering.