Parasitic Inductance Design for Preventing Oscillatory False Triggering of Parallel-Connected GaN-FETs. - Yusuke Hatakenaka; Kazuhiro Umetani; Masataka Ishihara; Eiji Hiraki; Hiroshi Tadano (IECON, 2021)

Tiny Approaches to the Interactive Online Lectures Under the COVID-19 Pandemic. - Eiji Hiraki; Masataka Ishihara; Kazuhiro Umetani (IECON, 2021)

Feasibility of Parasitic Drain Inductance Design for Minimizing Switching Loss in Bridge Circuits Using GaN-FETs. - Koki Abe; Masataka Ishihara; Yusuke Hatakenaka; Kazuhiro Umetani; Eiji Hiraki (ISIE, 2021)

Autonomous Resonant Frequency Tuning Controller for Repeater Resonator in Resonant Inductive Coupling Wireless Power Transfer System. - Akihiro Konishi; Kazuhiro Umetani; Masataka Ishihara; Eiji Hiraki (ISIE, 2021)

High-Efficiency Solenoid Coil Structure for Induction Heating of Cylindrical Heating Object. - Daiki Miyake; Kazuhiro Umetani; Shota Kawahara; Masataka Ishihara; Eiji Hiraki (ISIE, 2022)

Artificial-Voice-Based Conversational Lecture Video Clips for Flipped Classroom. - Kazuhiro Umetani; Yoshitaka Toyota; Masataka Ishihara; Eiji Hiraki (ISIE, 2023)

Actual Circuit Verification of LC Series Resonant Converter with Power Factor Control for Effective Power in Load regulation. - Akito Nakagaki; Eiji Hiraki; Kazuhiro Umetani; Masataka Ishihara; Yuto Yoshimura (IECON, 2024)

Feasibility of Active Reactance Compensator for Autonomously Maximizing Repeater Coil Current of Wireless Power Transfer System Against Variations in Resonant Frequency and Magnetic Coupling Intensity. - Masataka Ishihara; Kazuhiro Umetani; Akihiro Konishi; Eiji Hiraki (IEEE Access, 2024)