Mitsubishi Denki Kabushiki Kaisha

Shinji Murata

Akihiko Iwata

Yoichiro Tabata

Takashi Kumagai

Tomohiro Sasagawa

Akihiro Suzuki

Tatsuki Okamoto

Yoshihiro Ueda

Haruhiko Nagai

Hitoshi Wakata

Kenyu Haruta

Hiroshi Itou

Isamu Tanakura

Yuito Kimura

A switch device used for a laser device, includes series-parallel connected switch elements or modules. The switch elements or modules are simultaneously turned on by trigger signals from trigger circuits. The transmission lines for connecting the trigger circuits to respective switch elements are equal to one another in length. A protecting circuit is provided for the switch elements, and indicators are provided for indicating the shortcircuit of the switch elements. In the switch device, the number of wires for the switch elements is made small and heat generated from the switch elements is effectively radiated. The modules are easily stacked, and firmly connected to a control unit for controlling the switch elements. A discharge excited laser device using the switch device has a high efficiency and a long lifetime and is reliable.

Switch device for laser

In a pulse generator circuit for a laser unit etc., plural semiconductor switches arranged in matrix alignment on an outer surface of a first tube are connected in series and parallel with one another, and an end of each series-connection of the semiconductor switches is electrically connected to a second tube provided in coaxial alignment to the first tube, thereby realizing a synthetic semiconductor switch for switching high voltage and large current between the other end of the series-connection of the semiconductor switches and the second tube.

Semiconductor switching apparatus

Growing community of inventors

Amagasaki, Japan

Shinji Murata