Sansha Electric Manufacturing Company, Limited

Hideo Isii

Kenzo Danjo

Tetsuro Ikeda

Masao Katooka

Yuji Ikejiri

Shuji Yokoyama

A printed circuit board () includes an insulating substrate () on which conductive films () are formed. Semiconductor devices () disposed external to the printed circuit board () have their leads () connected to the conductive films. A flexible portion () is formed in the insulating substrate () at a location near the location where the leads () are connected to the conductive films ().

Heat sink arrangement for electrical apparatus

A power supply apparatus for use with arc-utilizing apparatuses includes a plurality of power supply blocks of the same capacity. Each power supply block includes an input-side rectifying circuit, an inverter, a transformer, and an output-side rectifying circuit. The inverter is controlled by a control circuit in such a manner that high-frequency current flowing the inverter or current flowing through the output-side rectifying circuit can correspond to a reference signal provided by a reference signal generator. The outputs of the output-side rectifying circuits of the power supply blocks are connected in parallel with each other. The values of the reference signals generated by the reference signal generators are made always equal by the action of equipotential lines.

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Osaka, Japan

Hideo Isii