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/diy/ - Do It Yourself

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>> No.1738517 [View]
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1738517

newfag looking at a pc psu, why does this capacitor not combust?
it says 0.47uF and it's across 230v AC
if i'm not mistaken P = U^2/ Xc = (230V)^2 *2*(pi)*50Hz*0.47uF = 7.8W
it's encased in plastic, ~ 2*2*1cm, how does it dissipate so much heat?

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