[olug] shocking case

[J Randall Wilson]

I generally agree.  Your computer is acting like an rc network with a long
time constant.  The problem is two-fold.  A bad ground means that a charge
build up can't be dissipated, which would also affect your surge protection.
A high resistance short in the power supply, possibly caused by a dust
build up, would cause an electron build up in the conductor (the case).
The result is a capacitor with no discharge path.

The 7 volts is about 60% of 12 volts (B*) reached in an hour.  I would
wager that another hour would have added an additional 3 volts (60& of
the remaining 5 volts) and anouther hour would have seen another 1.2 volts.

The case is of no concern because the power supply attaches with screws.

Enlight is a very good case.


Randy


On Wed, 10 Oct 2001, Eric Penne wrote:

> I agree with Phil on the poor grounding scenario.  The power supply is
> probably shorting somewhere.  The power supply has large caps in it to
> smooth any power ripples and is holding the charge.  This slowly
> dissipated over night.  The reason it only showed 7 volts the next day
> was the grounding issue.  The bad ground can have a different
> resistance.  You might just replace the power supply if you like your
> current case.  Otherwise get a new case and power supply.
>
> I would also check the wall outlet and make sure it is a 3 prong outlet
> that is actually  wired correctly.  this is for your protection so the
> current that wants to go through you to whatever ground might find an
> easier path going to the ground in the outlet.
>
>
> --- Phil Brutsche <phil at giedi.obix.com> wrote:
> > A long time ago, in a galaxy far, far way, someone said...
> >
> > > Please help.  Where's a good place to buy a new case (with power
> > > suply)?
> >
> > Think less "a good place to buy them" and more "what's a good brand
> > to get
> > and where do I get it".
> >
> > To answer my own question, get an Enlight case.  They rock.  You can
> > get
> > them at DIT and PC Support.
> >
> > > What could have caused this shocking behavior?
> >
> > Poor grounding is all I can think of.
> >
> > > I bought this case in December 2000.  There are not any loose wires
> > > etc etc.
> >
> > --
> >
> > Phil
> >
> >
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