Devices to protect the grid from EMPs (IMAGE)

DOE/Sandia National Laboratories

Devices to protect the grid from EMPs

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Luke Yates, left, a Sandia National Laboratories electrical engineer, passes Jack Flicker, a grid resiliency expert, a gallium nitride wafer with an array of diodes that can shunt a record-breaking 6,400 volts of electricity within a few billionths of a second.

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Photo by Rebecca Gustaf/Sandia National Laboratories

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