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Question about ESD


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#1 xacked

xacked

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Posted 20 July 2009 - 03:26 AM

Hi!

I've done a lot of work within computers, but I'd like some clarifications on avoiding ESD (eletrostatic discharge). I tried looking this up in your file database, and I apologize in advanced if I missed it!

As I have gathered, you can:

A) Wear an ESD wrist strap that usually attaches to the third pin (ground) in an electrical socket
:thumbsup: Do the same as A, but attach an the alligator clip to something grounded.
C) Touch the metal part of the computer case.

I have three questions:
1. About B - how would one know for certain that an object (other than the one presented in option A) is truly grounded?
2. About C - another advice I've heard is to either disconnect the I/O switch on the PSU or to unplug the wire that goes from the wall to the PSU. If you unplug the computer from the outlet, it cuts off the 5V continuous supply that goes to the mobo for the soft power-on, yet does doing so render touching the case to discharge ESD futile?
3. Does not unplugging and instead turning off the I/O switch on the PSU leave the ground connected?

Thanks in advanced!
~Jon

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