This article explores how earth leakage protection devices work, their construction, and their various applications.

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When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...

There are forearm-based heart rate monitors, wrist-based heart rate monitors, smartwatches, fitness trackers and even ...