Koichiro Sawa

17 papers Journal 17
YearRankTypeTitle / Venue / Authors
2020 J jnl
A Study on Contact Voltage Waveform and Its Relation with Deterioration Process of AgPd Brush and Au-Plated Slip-Ring System with Lubricant.
IEICE Trans. Electron.
Koichiro Sawa, Yoshitada Watanabe, Takahiro Ueno, Hirotasu Masubuchi
2019 J jnl
Technical Trends and International Standardization Activities in Electromagnetic Relays for Control Systems.
IEICE Trans. Electron.
Takeshi Aoki, Kenjiro Hamada, Kiyoshi Yoshida, Koichiro Sawa
2017 J jnl
A Method for Evaluating Degradation Phenomenon of Electrical Contacts Using a Micro-Sliding Mechanism - Minimal Sliding Amplitudes against Input Waveforms (2) -.
IEICE Trans. Electron.
Shin-ichi Wada, Koichiro Sawa
2017 J jnl
Commutation Phenomena and Brush Wear of DC Motor at High Speed Rotation.
IEICE Trans. Electron.
Masayuki Isato, Koichiro Sawa, Takahiro Ueno
2016 J jnl
A Method for Evaluating Degradation Phenomenon of Electrical Contacts Using a Micro-Sliding Mechanism - Minimal Sliding Amplitudes against Input Waveforms -.
IEICE Trans. Electron.
Shin-ichi Wada, Koichiro Sawa
2016 J jnl
Fundamental Characteristics of Arc Extinction at DC Low Current Interruption with High Voltage (<500V).
IEICE Trans. Electron.
Koichiro Sawa, Masatoshi Tsuruoka, Makito Morii
2013 J jnl
Evaluation of Basic Dynamical Parameters in Printed Circuit Board - Mass, Force, and Acceleration -.
IEICE Trans. Electron.
Shin-ichi Wada, Koichiro Sawa
2012 J jnl
Effect of Lubricant on Lifetime of Au-Plated Slip-Ring and Ag-Pd-Cu Brush System for Small Electric Power.
IEICE Trans. Electron.
Koichiro Sawa, Yasunori Suzuki, Noboru Morita, Kaoru Endo, Takahiro Ueno
2012 J jnl
Influence of Arc Discharge on Contact Resistance of AgNi Contacts for Electromagnetic Contactors.
IEICE Trans. Electron.
Kiyoshi Yoshida, Koichiro Sawa, Kenji Suzuki, Masaaki Watanabe
2011 J jnl
Influence of Voltage on Arc Characteristics and Electrode Mass Change of AgNi Contacts for Electromagnetic Contactors.
IEICE Trans. Electron.
Kiyoshi Yoshida, Koichiro Sawa, Kenji Suzuki, Masaaki Watanabe
2010 J jnl
A Study on Wear of Brush and Carbon Flat Commutator of DC Motor for Automotive Fuel Pump.
IEICE Trans. Electron.
Koichiro Sawa, Takahiro Ueno, Hidenori Tanaka
2007 J jnl
Consideration on Contact Mechanism of YBaCuO Bulk Superconductor with Deposited Metal Layer.
IEICE Trans. Electron.
Hiroyuki Fujita, Katsuya Fukuda, Koichiro Sawa, Masaru Tomita, Masato Murakami, Naomichi Sakai, Izumi Hirabayashi
2007 J jnl
Development of the Lead-Free Brush Material for the High-Load Starter.
IEICE Trans. Electron.
Ryoichi Honbo, Youichi Murakami, Koichiro Sawa, Hiroyuki Wakabayashi, Naruhiko Inayoshi, Kyoji Inukai, Takeshi Shimoyama, Naoki Morita
2007 J jnl
Numerical Study on Electromagnetisms and Material Characteristics of Magnetic Flux Shield for Eddy-Current Type Proximity Sensor.
IEICE Trans. Electron.
Koichi Koibuchi, Koichiro Sawa, Takashi Honma, Takumi Hayashi, Kuniyoshi Ueda, Hiroshi Sasaki
2005 J jnl
Characteristic Analysis and Enhancement of Sensing Property for Eddy-Current Type Proximity Sensor.
IEICE Trans. Electron.
Koichi Koibuchi, Koichiro Sawa, Takashi Honma, Takumi Hayashi, Kuniyoshi Ueda, Hiroshi Sasaki
2005 J jnl
Development of the Lead-Free Carbon Brush Material for Starters.
IEICE Trans. Electron.
Ryoichi Honbo, Koichiro Sawa, Youichi Murakami, Hiroyuki Wakabayashi, Naruhiko Inayoshi, Kyoji Inukai, Takeshi Shimoyama, Naoki Morita
2005 J jnl
Fabrication Process of Nonarcing Power MEMS Switch.
IEICE Trans. Electron.
Yu Yonezawa, Noboru Wakatsuki, Yoshio Satoh, Tadashi Nakatani, Koichiro Sawa