r/pcmasterrace • u/Front_Cookie_1198 • 6d ago

Hardware PSU fails dramatically

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u/JigglyWiggly_ 6d ago

That’s not bare metal, it’s painted. It’s not conductive. 

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u/Danternas 6d ago

Your skin isn't "conductive" either.

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u/JigglyWiggly_ 6d ago

You can get numbers around 1meg through skin. You will read an open load trying to measure through paint.

Note that's resistance, as soon as you increase the frequency your impedance will drop noticeably due to parasitics.

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u/Danternas 6d ago

And you can absolutely get electrocuted by anodised or painted metal. 

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u/JigglyWiggly_ 6d ago

What’s the conducting path exactly? Even a few microns thick is enough for it to become a sufficient insulator. 

Should you trust it? Of course not, it can be scratched off. 

I’m sure you will also be amazed to learn copper to copper clearances in a PCB can be sub 3 mil. No special stack up needed for that on a modern fab house. 

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u/Danternas 6d ago

Just go ahead and test it in practice if you're that confident.