"Comparative Study of High-Voltage Isolated Filament Power Supply for Driving a High-Power Magnetron" Joo-Young Lee, Min-Kyu Choi, Hyun-Bin Jo and Hong-Je Ryoo , Trans. On Plasma Science , I.F : 1.2 , VoL. 52 , NO. 7 , 2699 - 2705 , July. 2024

"Design and Implementation of a xenon flash lamp power supply system for electronic printing application" Min-Kyu Choi, Seung-Ho Song, Hong-Je Ryoo , Journal of Power Electronics , I.F : 1.3 , VOL. 24 , 361-372 , Jan. 2024

"DC Series Arc Fault Detector With Differential DWT and Variable Threshold Method for Photovoltaic Systems" Jae-Beom Ahn, Seung-Jae-Jeong, Chan-Gi Cho, and Hong-Je Ryoo , Trans. On Industrial Informatics , I.F : 12.3 , VOL. 20 , NO. 7 , 9343-9351 , July. 2024

"10-kV, 400-A, 10-kHz Solid-State Switch for Lightning Indirect Effect Test" Woo-Cheol Jeong, Su-Mi Park, Joo-Young Lee, Min-Kyu Choi, and Hong-Je Ryoo , Trans. On Plasma Science , I.F : 1.5 , VOL. 51 , NO. 10 , pg. 2872-2877 , Oct. 2023