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hkBattousai earned this badge 6 times |
feb 13 at 20:39
How precise is the frequency of the AC electricity network?
jun 23 '12 at 5:26
How do I open a rectangular hole on a metal case?
jun 13 '12 at 15:53
Why are the high voltage overhead power lines with the same potential being isolated?
sep 6 '11 at 23:06
How to carry high current on PCB
