Category Archive: electronics

Jan 16 2012

Why do Western Digital hard drive power supplies leak so much AC voltage?

Western Digita Power Supply #3 - 44 volts leakage

We recently changed out a case on a computer power supply.  The new case is metal whereas the old one was plastic, and as I was plugging in a USB cable from a USB hub I got a shock.  Not only that, when I accidentally touched it to the bottom of the computer’s case, the …

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