| 摘要 |
An electrode power supply for an electrochemical ion exchange cell having an ion exchange membrane between a pair of electrodes, has a voltage selector to receive an AC voltage and selectively couple the AC voltage to a voltage supply. The voltage supply produces an output voltage from the AC voltage. A zero crossing detector detects zero-crossing events in the AC voltage and produce an indication related to the zero-crossing events. The selective coupling of the voltage selector is enabled based on the indication of the zero-crossing events.
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