On Sat, 12 Mar 2005 03:27:18 -0500, enorbet wrote:

>
>Hello
>  Is this thing accurate enough to where one could adjust voltages on 
>supplys that have trim tabs?

Funny you should ask that - Antec makes just such a power supply. :)

The readings themselves are obtained from a voltmeter... I use a
digital model here, and yes, using the trim tabs, you can adjust the
rails to read exactly what they're supposed to.

The Antec Power Supply Tester doesn't actually give you the readings -
it just gives you a way to turn the power supply on without attaching
it to a motherboard, and provides a constant load on that PSU, so you
can take readings with the voltmeter while the power supply runs at a
known rate.

You can get +12V and +5V readings off any hard drive power cable, but
the +3.3V rail that powers the CPU is tough to get a direct reading on
without this little gizmo.

It's actually better to take the readings directly off the lines than
rely on the onboard sensors on the motherboard... I've noticed
discrepancies between the reported voltages and the readings I've seen
"live" on the digital voltmeter I have.

The Intel motherboard I mentioned last night is showing 4.87V while the
voltmeter shows 4.97V (Red wire), and the 11.875V on the monitor is
bang-on 12.00V (yellow wire) when measured directly.  Power supply is
an Enermax EG465P-VE "Whisper", motherboard is an Intel D865PERL
running a Socket 478 P4 3.0GHz.

In summary - if you're going to tune it, do it right! :)

-Derek


Derek W. Keoughan,
Finnegan Software, Inc.,  Brampton, Ontario, Canada  http://www.finnsoft.com
416-410-4774 phone - 800-258-0033 toll free - 905-846-5516 fax

Consulting, Networking, Cabling, Internet, Hardware, Software, Tech Support
eComStation, OS/2 Warp/Server, WinXP/2000/NT/Me/9x, Linux
Customized PURRformance PC's & Servers, OnSite Services, Installations
and Upgrades

= Celebrating 10 years of "happily purring" computing - Founded
1995-02-02 =




 
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