[ale] multiple PS's in one PC?

[James P. Kinney III]

If they are in the same chassis, they should already share the same
ground through the case. An easy check is to test the resistance between
the black wire pin on the hard drive power plug and the PC chassis. If
it is 0 Ohms, then all the systems are already grounded together. If the
power supplies are plugged into the same AC source then they will have a
common ground already.

The problem comes in when a ground loop is made. That's when there are
too many ground points and a potential arises between them. Just be sure
to ground the power supply to the chassis.

On Sun, 2003-02-23 at 17:22, Christopher Bergeron wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>  
> Should I at least tie the grounds together so they have a common???
> 
> Thanks for the tip!
> - -CB
> 
> 
> 
> David Corbin wrote:
> 
> | I'm not a EE (I dropped that for ICS), but I think the right strategy 
> is to use one ot power half the drive, and one to power the other half 
> and the motherboard.  The two should NOT be connected to one another in 
> any direct way.  (They'll obviously be connected via the power-cords 
> plugged into a common power source, and arguably through the hard drive 
> bus interfaces, but I don't see any problems.)
> |
> | Remember never let the smoke out of the chip!
> |
> | David
> |
> | Christopher Bergeron wrote:
> |
> |> -----BEGIN PGP SIGNED MESSAGE-----
> |> Hash: SHA1
> |>
> |> Ok, what weekend wouldn't be complete without me asking some 
> off-the-wall question?  Here's my latest quandry:  I have a PC thats 
> acting as a fileserver.  I have about 6-8 hard disks in it, but alas, my 
> power supply will only let me connect about 5 devices.  So, I'm sitting 
> here looking at an AT power supply that's just collecting dust, and I'm 
> wondering if I can connect it to some of the drives, connect the grounds 
> together, and connect the +5 and +12 lines to each other corresponding 
> line on the other power supply.
> |>
> |> Are there any EE's out there that can tell me the consequences of 
> doing this? Can this work, or am I going to find myself in a mist of 
> magic computer smoke?
> |>
> |> Thanks again...!
> |> - -CB
> |>
> |>
> |>
> |> -----BEGIN PGP SIGNATURE-----
> |> Version: GnuPG v1.2.1 (MingW32)
> |> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> |>
> |> iD8DBQE+WTkRTKCy0t3zQgURAliCAKDEidymqtxsoo8Jjaok9srSE0K/6ACeN/Fg
> |> Tv36sXyIgZ+gzntULiej3F4=
> |> =r/TB
> |> -----END PGP SIGNATURE-----
> |>
> |>
> |> _______________________________________________
> |> Ale mailing list
> |> Ale at ale.org
> |> http://www.ale.org/mailman/listinfo/ale
> |>
> |
> |
> | _______________________________________________
> | Ale mailing list
> | Ale at ale.org
> | http://www.ale.org/mailman/listinfo/ale
> |
> |
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.1 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>  
> iD8DBQE+WUmkTKCy0t3zQgURAposAKDe2ykx1S7wEIs8610iQtEdMPz7cACgyHqL
> i/9FyOinJijd7uQ9BxiFpFY=
> =BkKp
> -----END PGP SIGNATURE-----
> 
> 
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
-- 
James P. Kinney III          \Changing the mobile computing world/
CEO & Director of Engineering \          one Linux user         /
Local Net Solutions,LLC        \           at a time.          /
770-493-8244                    \.___________________________./
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics) <jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7 

 This is a digitally signed message part