Lightning strikes probably don't occur any more now than they did 30 years ago. Yet, the increase in computer-based control systems and their susceptibility to becoming corrupted or even physically damaged by lightning means we now need to protect many aspects of 'electronics infrastructure' more than ever. Furthermore, of course, lightning is not the only source or cause of surges that can cause fatal damage to control systems and equipment. The users of electric or electronic equipment and telephone and data-processing systems also face the problem of keeping equipment in operation in spite of the transient overvoltages induced by lightning.
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