🚀 go-pugleaf

"John Leister" <MuggySphere@hotmail.com> wrote in message
news:3F80DA6E.B51D2118@hotmail.com...
> I just did a voltage check on my motherboard and I'm wondering
> if something has gone wrong because they seem to vary a lot around
> the place.
>
> Motherboard in question is an MSI  KT2 Combo
> CPU is an AMD Athlon  XP2000+
> 128mb  SD ram
> 20 gig seagate HDD
>
> Here is the list of voltages and I am just wondering if they are all
within normal tolerance
> for this particular CPU and system.
>
> +5.0v   = 50195v
> +12.0v = 110984v
> -12.0v = 11.661v
> -5.0v   = 5.077v
> Vcore  = 1.600v
\

If the computer works then why worry.

John Leister <MuggySphere@hotmail.com> wrote in
message news:3F80DA6E.B51D2118@hotmail.com...

> I just did a voltage check on my motherboard
> and I'm wondering if something has gone wrong
> because they seem to vary a lot around the place.

No, nothing is wrong, just the crummy A/D used to measure them.

You'll find if you use a real multimeter with a max and min
capability, the actual voltages dont vary anything like that.

> Motherboard in question is an MSI  KT2 Combo
> CPU is an AMD Athlon  XP2000+
> 128mb  SD ram
> 20 gig seagate HDD

> Here is the list of voltages and I am just
> wondering if they are all within normal tolerance
> for this particular CPU and system.
>
> +5.0v   = 50195v
> +12.0v = 110984v
> -12.0v = 11.661v
> -5.0v   = 5.077v
> Vcore  = 1.600v

Yeah, those are fine.

Rod Speed wrote:

> John Leister <MuggySphere@hotmail.com> wrote in
> message news:3F80DA6E.B51D2118@hotmail.com...
>
> > I just did a voltage check on my motherboard
> > and I'm wondering if something has gone wrong
> > because they seem to vary a lot around the place.
>
> No, nothing is wrong, just the crummy A/D used to measure them.


By A/D I assume you mean analog digital converter.  And I did use a multimeter


> You'll find if you use a real multimeter with a max and min
> capability, the actual voltages dont vary anything like that.
>
> > Motherboard in question is an MSI  KT2 Combo
> > CPU is an AMD Athlon  XP2000+
> > 128mb  SD ram
> > 20 gig seagate HDD
>
> > Here is the list of voltages and I am just
> > wondering if they are all within normal tolerance
> > for this particular CPU and system.
> >
> > +5.0v   = 50195v
> > +12.0v = 110984v
> > -12.0v = 11.661v
> > -5.0v   = 5.077v
> > Vcore  = 1.600v
>
> Yeah, those are fine.



Thanks

John Leister <MuggySphere@hotmail.com> wrote in
message news:3F810178.A8F99B54@hotmail.com...
> Rod Speed wrote
>> John Leister <MuggySphere@hotmail.com> wrote

>>> I just did a voltage check on my motherboard
>>> and I'm wondering if something has gone wrong
>>> because they seem to vary a lot around the place.

>> No, nothing is wrong, just the crummy A/D used to measure them.

> By A/D I assume you mean analog digital converter.

Yep, whats used by the motherboard to show those voltages in the bios.

> And I did use a multimeter

So what did you mean by 'they seem to vary a lot around the place' ?

I assumed you meant that a particular voltage varys quite a bit over time.
The values shown in the bios do that. With a decent multimeter, they dont.

> > You'll find if you use a real multimeter with a max and min
> > capability, the actual voltages dont vary anything like that.
> >
> > > Motherboard in question is an MSI  KT2 Combo
> > > CPU is an AMD Athlon  XP2000+
> > > 128mb  SD ram
> > > 20 gig seagate HDD
> >
> > > Here is the list of voltages and I am just
> > > wondering if they are all within normal tolerance
> > > for this particular CPU and system.
> > >
> > > +5.0v   = 50195v
> > > +12.0v = 110984v
> > > -12.0v = 11.661v
> > > -5.0v   = 5.077v
> > > Vcore  = 1.600v
> >
> > Yeah, those are fine.

> Thanks
>

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:blraha$f58b0$1@ID-69072.news.uni-berlin.de...
>
> John Leister <MuggySphere@hotmail.com> wrote in
> message news:3F810178.A8F99B54@hotmail.com...
> > Rod Speed wrote
> >> John Leister <MuggySphere@hotmail.com> wrote
>
> >>> I just did a voltage check on my motherboard
> >>> and I'm wondering if something has gone wrong
> >>> because they seem to vary a lot around the place.
>
> >> No, nothing is wrong, just the crummy A/D used to measure them.
>
> > By A/D I assume you mean analog digital converter.
>
> Yep, whats used by the motherboard to show those voltages in the bios.
>
> > And I did use a multimeter
>
> So what did you mean by 'they seem to vary a lot around the place' ?
>
> I assumed you meant that a particular voltage varys quite a bit over time.
> The values shown in the bios do that. With a decent multimeter, they dont.
>

With a scope and memory they do.

> > So what did you mean by 'they seem to vary a lot around the place' ?
> >
> > I assumed you meant that a particular voltage varys quite a bit over
time.
> > The values shown in the bios do that. With a decent multimeter, they
dont.
> >
>
> With a scope and memory they do.
>

Heh..
I think this is a little OT..

his +12 is out by 7.5% according to his reading but everything else is in
pretty good I think..
It's hard for DVM's to read some stuff as posted previously, and unless you
have a fairly nice scope you could still have problems.. Anyhow.. Those
readings look good to me and I think the same amp (from the psu) will drive
all of the  lines (except the 5vsb) so if they are out then it will just be
the design of the supply.. after all the +5v is spot on so if the supply is
regulating by the +5 line then I say it's all good

"rstlne" <.@.> wrote in message
news:hIbgb.7904$QH3.605@newsfep4-winn.server.ntli.net...
> > > So what did you mean by 'they seem to vary a lot around the place' ?
> > >
> > > I assumed you meant that a particular voltage varys quite a bit over
> time.
> > > The values shown in the bios do that. With a decent multimeter, they
> dont.
> > >
> >
> > With a scope and memory they do.
> >
>
> Heh..
> I think this is a little OT..
>
> his +12 is out by 7.5% according to his reading but everything else is in
> pretty good I think..
> It's hard for DVM's to read some stuff as posted previously, and unless
you
> have a fairly nice scope you could still have problems.. Anyhow.. Those
> readings look good to me and I think the same amp (from the psu) will
drive
> all of the  lines (except the 5vsb) so if they are out then it will just
be
> the design of the supply.. after all the +5v is spot on so if the supply
is
> regulating by the +5 line then I say it's all good

Every time I move my mouse the energy consumption of my PC varies. It has a
very slight but audible change in tone. As with all things in a PC you have
output, loads and interference caused by fans. ripples, noise ....... hard
to say what the actual voltage is.

Rod Speed wrote:

> John Leister <MuggySphere@hotmail.com> wrote in
> message news:3F810178.A8F99B54@hotmail.com...
> > Rod Speed wrote
> >> John Leister <MuggySphere@hotmail.com> wrote
>
> >>> I just did a voltage check on my motherboard
> >>> and I'm wondering if something has gone wrong
> >>> because they seem to vary a lot around the place.
>
> >> No, nothing is wrong, just the crummy A/D used to measure them.
>
> > By A/D I assume you mean analog digital converter.
>
> Yep, whats used by the motherboard to show those voltages in the bios.
>
> > And I did use a multimeter
>
> So what did you mean by 'they seem to vary a lot around the place' ?
>
> I assumed you meant that a particular voltage varys quite a bit over time.
> The values shown in the bios do that. With a decent multimeter, they dont.\



I was a bit concerned at the difference between the positive and negative
rails

"John Leister" <MuggySphere@hotmail.com> wrote in message
news:3F80DA6E.B51D2118@hotmail.com...
> I just did a voltage check on my motherboard and I'm wondering
> if something has gone wrong because they seem to vary a lot around
> the place.
>
> Motherboard in question is an MSI  KT2 Combo
> CPU is an AMD Athlon  XP2000+
> 128mb  SD ram
> 20 gig seagate HDD
>
> Here is the list of voltages and I am just wondering if they are all
within normal tolerance
> for this particular CPU and system.
>
> +5.0v   = 50195v
> +12.0v = 110984v
> -12.0v = 11.661v
> -5.0v   = 5.077v
> Vcore  = 1.600v

There is nothing wrong with those readings.  Most PSU's have a +-5%
tolerance on the +3.3v and +5.0v rails and +-10% on the +12v rail and at
least 10% for the negative voltages which, BTW, are no longer used.  They
were used for ISA cards, so the negative voltages haven't been used for a
long time.
>
>

Miro <miro01@hotmail.com> wrote in message
news:3f81353f$0$32142$afc38c87@news.optusnet.com.au...
> Rod Speed <rod_speed@yahoo.com> wrote
>> John Leister <MuggySphere@hotmail.com> wrote
>>> Rod Speed wrote
>>>> John Leister <MuggySphere@hotmail.com> wrote

>>>>> I just did a voltage check on my motherboard
>>>>> and I'm wondering if something has gone wrong
>>>>> because they seem to vary a lot around the place.

>>>> No, nothing is wrong, just the crummy A/D used to measure them.

>>> By A/D I assume you mean analog digital converter.

>> Yep, whats used by the motherboard to show those voltages in the bios.

>>> And I did use a multimeter

>> So what did you mean by 'they seem to vary a lot around the place' ?

>> I assumed you meant that a particular voltage varys quite a bit over time.
>> The values shown in the bios do that. With a decent multimeter, they dont.

> With a scope and memory they do.

Have fun explaining why a decent multimeter like a Fluke with max/min doesnt see them.

rstlne <.@.> wrote in message
news:hIbgb.7904$QH3.605@newsfep4-winn.server.ntli.net...

>>>> +5.0v   = 50195v
>>>> +12.0v = 110984v
>>>> -12.0v = 11.661v
>>>> -5.0v   = 5.077v
>>>> Vcore  = 1.600v

>>> So what did you mean by 'they seem to vary a lot around the place' ?

>>> I assumed you meant that a particular voltage varys quite a bit over time.
>>> The values shown in the bios do that. With a decent multimeter, they dont.

> > With a scope and memory they do.

> Heh..
> I think this is a little OT..

Depends on the group..

> his +12 is out by 7.5% according to his reading

Dunno, I assumed that was a typo and he meant +12.0v = 11.984v
His original of +12.0v = 110984v isnt even possible number of digits
wise and I know he has an eyesight problem.

> but everything else is in pretty good I think..

> It's hard for DVM's to read some stuff as posted previously,

Not with a decent one with max/min

> and unless you have a fairly nice scope you could still have problems..
> Anyhow.. Those readings look good to me and I think the same amp
> (from the psu) will drive all of the  lines (except the 5vsb) so if they are
> out then it will just be the design of the supply.. after all the +5v is spot on

Dunno, looks like the same typo with that too.

> so if the supply is regulating by the +5 line then I say it's all good

"John Leister" <MuggySphere@hotmail.com> wrote in message news:3F818357.32CA5C3E@hotmail.com...
> Rod Speed wrote:
>
> > John Leister <MuggySphere@hotmail.com> wrote in
> > message news:3F810178.A8F99B54@hotmail.com...
> > > Rod Speed wrote
> > >> John Leister <MuggySphere@hotmail.com> wrote
> >
> > >>> I just did a voltage check on my motherboard
> > >>> and I'm wondering if something has gone wrong
> > >>> because they seem to vary a lot around the place.
> >
> > >> No, nothing is wrong, just the crummy A/D used to measure them.
> >
> > > By A/D I assume you mean analog digital converter.
> >
> > Yep, whats used by the motherboard to show those voltages in the bios.
> >
> > > And I did use a multimeter
> >
> > So what did you mean by 'they seem to vary a lot around the place' ?
> >
> > I assumed you meant that a particular voltage varys quite a bit over time.
> > The values shown in the bios do that. With a decent multimeter, they dont.\
>
>
>
> I was a bit concerned at the difference between the positive and negative
> rails

Thats irrelevant. The -12 and -5 rails arent used for anything much
anymore and the -12 particularly is VERY non critical voltage wise.
Its basically just used for the negative swing on the serial ports now.

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:blshte$g3r3d$1@ID-69072.news.uni-berlin.de...

> Have fun explaining why a decent multimeter like a Fluke with max/min
doesnt see them.
>

Multimeters are toys for little boys.

Miro <miro01@hotmail.com> wrote in message
news:3f8200cd$0$28040$afc38c87@news.optusnet.com.au...
> Rod Speed <rod_speed@yahoo.com> wrote

>> Have fun explaining why a decent multimeter
>> like a Fluke with max/min doesnt see them.

> Multimeters are toys for little boys.

Even you should be able to wank yourself out of your
predicament better than that pathetic effort, child.

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:blt85q$ftc0u$1@ID-69072.news.uni-berlin.de...
>
> Miro <miro01@hotmail.com> wrote in message
> news:3f8200cd$0$28040$afc38c87@news.optusnet.com.au...
> > Rod Speed <rod_speed@yahoo.com> wrote
>
> >> Have fun explaining why a decent multimeter
> >> like a Fluke with max/min doesnt see them.
>
> > Multimeters are toys for little boys.
>
> Even you should be able to wank yourself out of your
> predicament better than that pathetic effort, child.
>
Miro, one of the great geniuses of our times. Not.

"Ken Taylor" <ken123@xtra.co.nz> wrote in message
news:bltd0d$gh1e5$1@ID-76636.news.uni-berlin.de...
> "Rod Speed" <rod_speed@yahoo.com> wrote in message
> news:blt85q$ftc0u$1@ID-69072.news.uni-berlin.de...
> >
> > Miro <miro01@hotmail.com> wrote in message
> > news:3f8200cd$0$28040$afc38c87@news.optusnet.com.au...
> > > Rod Speed <rod_speed@yahoo.com> wrote
> >
> > >> Have fun explaining why a decent multimeter
> > >> like a Fluke with max/min doesnt see them.
> >
> > > Multimeters are toys for little boys.
> >
> > Even you should be able to wank yourself out of your
> > predicament better than that pathetic effort, child.
> >
> Miro, one of the great geniuses of our times. Not.

Anyone that thinks a multimeter is an analytical tool is a "Rod Speed"

The latest spec for the ATX power supply can be found here:
http://www.formfactors.org/FFDetail.asp?FFID=1&CatID=2


Gary


"John Leister" <MuggySphere@hotmail.com> wrote in message
news:3F80DA6E.B51D2118@hotmail.com...
> I just did a voltage check on my motherboard and I'm wondering
> if something has gone wrong because they seem to vary a lot around
> the place.
>
> Motherboard in question is an MSI  KT2 Combo
> CPU is an AMD Athlon  XP2000+
> 128mb  SD ram
> 20 gig seagate HDD
>
> Here is the list of voltages and I am just wondering if they are all
within normal tolerance
> for this particular CPU and system.
>
> +5.0v   = 50195v
> +12.0v = 110984v
> -12.0v = 11.661v
> -5.0v   = 5.077v
> Vcore  = 1.600v
>
>

"Ken Taylor" <ken123@xtra.co.nz> wrote in message news:bltd0d$gh1e5$1@ID-76636.news.uni-berlin.de...
> "Rod Speed" <rod_speed@yahoo.com> wrote in message
> news:blt85q$ftc0u$1@ID-69072.news.uni-berlin.de...
> >
> > Miro <miro01@hotmail.com> wrote in message
> > news:3f8200cd$0$28040$afc38c87@news.optusnet.com.au...
> > > Rod Speed <rod_speed@yahoo.com> wrote
> >
> > >> Have fun explaining why a decent multimeter
> > >> like a Fluke with max/min doesnt see them.
> >
> > > Multimeters are toys for little boys.
> >
> > Even you should be able to wank yourself out of your
> > predicament better than that pathetic effort, child.
> >
> Miro, one of the great geniuses of our times. Not.

Yep, just another terminally pig ignorant know it all child
who in fact knows sweet fuck all about anything at all.

" Miro" <miro01@hotmail.com> wrote in message news:3f824cdc$0$10595$afc38c87@news.optusnet.com.au...
>
> "Ken Taylor" <ken123@xtra.co.nz> wrote in message
> news:bltd0d$gh1e5$1@ID-76636.news.uni-berlin.de...
> > "Rod Speed" <rod_speed@yahoo.com> wrote in message
> > news:blt85q$ftc0u$1@ID-69072.news.uni-berlin.de...
> > >
> > > Miro <miro01@hotmail.com> wrote in message
> > > news:3f8200cd$0$28040$afc38c87@news.optusnet.com.au...
> > > > Rod Speed <rod_speed@yahoo.com> wrote
> > >
> > > >> Have fun explaining why a decent multimeter
> > > >> like a Fluke with max/min doesnt see them.
> > >
> > > > Multimeters are toys for little boys.
> > >
> > > Even you should be able to wank yourself out of your
> > > predicament better than that pathetic effort, child.
> > >
> > Miro, one of the great geniuses of our times. Not.

> Anyone that thinks a multimeter is an analytical tool

It is for that particular question of the range of voltage seen on a
supply rail with a decent max/min system, pig ignorant fuckwit child.

Hi Rod


My readings were done on a 3.5 digit digital multimeter
but it wasn't a fluke brand one. I'm still using my 21 range
micronta brand meter

> Anyone that thinks a multimeter is an analytical tool is a "Rod Speed"
>

Quality Multimeters keep this world running.. Without them it would all be
shut down, no utilities would work, no mfg'ing planets would work..
electrical systems in your house would be verry expensive to troubleshoot.
If you dont think it's a tool then you have never seen one that is valued at
more than about 10 quid

"rstlne" <.@.> wrote in message
news:pxwgb.8595$QH3.2941@newsfep4-winn.server.ntli.net...
> > Anyone that thinks a multimeter is an analytical tool is a "Rod Speed"
> >
>
> Quality Multimeters keep this world running.. Without them it would all be
> shut down, no utilities would work, no mfg'ing planets would work..
> electrical systems in your house would be verry expensive to troubleshoot.
> If you dont think it's a tool then you have never seen one that is valued
at
> more than about 10 quid

Why do they have test equipment ? Geez !!!

" Miro" <miro01@hotmail.com> wrote in message
news:3f829988$0$10595$afc38c87@news.optusnet.com.au...
>
> "rstlne" <.@.> wrote in message
> news:pxwgb.8595$QH3.2941@newsfep4-winn.server.ntli.net...
> > > Anyone that thinks a multimeter is an analytical tool is a "Rod Speed"
> > >
> >
> > Quality Multimeters keep this world running.. Without them it would all
be
> > shut down, no utilities would work, no mfg'ing planets would work..
> > electrical systems in your house would be verry expensive to
troubleshoot.
> > If you dont think it's a tool then you have never seen one that is
valued
> at
> > more than about 10 quid
>
> Why do they have test equipment ? Geez !!!
>

Multimeters are test equipment..
If you need an oscope to understand EVERYTHING that you work on then you
probably dont know enough about electronics to be working on electronics..
Yea yea yea your a hardware engineer and you just finish'd your schooling
last year and now your in a good paying job or whatever.. that doesnt mean
you know 1 fucking through about electronics, your obvious ragging of dvm's
show that you dont know much

John Leister <MuggySphere@hotmail.com> wrote in
message news:3F825875.650C09E4@hotmail.com...

> My readings were done on a 3.5 digit digital
> multimeter but it wasn't a fluke brand one.

You really need one with a max/min capability for that sort
of clear idea of how much the supply rails vary over time.

> I'm still using my 21 range micronta brand meter

> >
> > +5.0v   = 50195v
> > +12.0v = 110984v
> > -12.0v = 11.661v
> > -5.0v   = 5.077v
> > Vcore  = 1.600v
>
> There is nothing wrong with those readings.  Most PSU's have a +-5%
> tolerance on the +3.3v and +5.0v rails and +-10% on the +12v rail and at
> least 10% for the negative voltages which, BTW, are no longer used.  They
> were used for ISA cards, so the negative voltages haven't been used for a
> long time.
> >

The serial port uses the +12V and -12V lines for data transmission from the
port (and can receive down to +/-5V).

Dave wrote:
>
> The serial port uses the +12V and -12V lines for data transmission from
> the port (and can receive down to +/-5V).

Many serial drivers only require a positive supply of say 5V, they use
onboard charge chumps and dc-dc convertors to get �12V.  I'm not sure whats
used on modern PCs it's not a MAX232 style chip, but they can do that.

Ben
-- 
I'm not just a number. To many, I'm known as a String...