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Yuji Kumagai

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Publication

Featured researches published by Yuji Kumagai.

Archive | 2003

Dimmable ballast for an electrodeless discharge lamp

Shinji Makimura; Hiroshi Kido; Shingo Masumoto; Yuji Kumagai; Akira Nakajo

Archive | 1995

Class-e push-pull power amplifier circuit

Shinichi Anami; Burei Deretsuku; Koji Hiramatsu; Shozo Kataoka; Yuji Kumagai; Koji Nishimura; Futoshi Okamoto; Eiji Shiohama; Shohei Yamamoto; ブレイ デレック; 英二 塩浜; 正平 山本; 太志 岡本; 宏司 平松; 祐二 熊谷; 省三 片岡; 広司 西村; 真一 阿南

Archive | 1997

Power source device with minimized variation in circuit efficiency due to variation in applied voltage to driving transformer

Hiroshi Kido; Yuji Kumagai; Shinji Makimura

Proceedings of Annual Conference of The Illuminating Engineering Institute of Japan Proceedings of 2004 Annual Conference of The Illuminating Engineering Institute of Japan | 2004

Development of electronic ballast for low frequency electrodeless lamps.

Shohei Yamamoto; Yuji Kumagai; Akira Nakajo; Futoshi Okamoto

Archive | 2003

Dimmbares vorschaltgerät für eine elektrodenlose entladungslampe Dimmable control gear for an electrodeless discharge lamp

Shinji Makimura; Hiroshi Kido; Shingo Masumoto; Yuji Kumagai; Akira Nakajo

Journal of The Illuminating Engineering Institute of Japan | 2003

A study of dimming method for electrodeless lamp

Shingo Masumoto; Shinji Makimura; Yuji Kumagai; Hiroshi Kido

Archive | 2002

An electrodeless discharge lamp lighting device

Yuji Kumagai; Shohei Yamamoto; 正平 山本; 祐二 熊谷

Journal of The Illuminating Engineering Institute of Japan | 2002

A study of single-ended high frequency circuit for electrodeless lamp

Yuji Kumagai; Shohei Yamamoto; Shinji Makimura; Hiroshi Kido; Futoshi Okamoto

Journal of The Illuminating Engineering Institute of Japan | 2001

A study of the starting control method for electrodeless HID lamp system

Yuji Kumagai; Shohei Yamamoto; Hiroshi Kido; Futoshi Okamoto

Journal of The Illuminating Engineering Institute of Japan | 2001

A study on starting characteristic of electrodeless fluorescent lamp system

Shohei Yamamoto; Yuji Kumagai; Hiroshi Kido; Futoshi Okamoto

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Collaboration

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Shohei Yamamoto

Panasonic Electric Works

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Kenshi Suzuki

Tokai University

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Koji Hiramatsu

Panasonic

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