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The simple act of walking across a carpet can charge a person up to 35,000V in dry winter weather. If the person then picks up a cell phone or touches an appliance, this voltage will cause a discharge into the unsuspecting item and possibly render it permanently useless. Here again, overvoltage protection is needed, and a varistor can easily be used to prevent product damage.
PTM Published on: 2011-05-31
