Sharp Kabushiki Kaisha Corporation

Yutaka Tateyama

Toshihiro Kamii

Hirokazu Ooe

In an ion elution unit, a drive circuit applies a voltage between electrodes to elute metal ions from the electrodes. Polarities of the electrodes are reversed cyclically with a voltage application halt period placed in-between. A current detection circuit detects the current flowing between the electrodes. A check of operation of the current detection circuit is carried out before the application of a voltage to the electrodes is started. The operation of the current detection circuit is started when a predetermined period of time passes after the application of a voltage to the electrodes is started.

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Moriguchi, Japan

Yutaka Tateyama