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Modern MoBo's have some 3 or 4 Adjustable switched mode PSU's

1. CPU Voltage
2. Ram "
3. AGP "


All these are adjustable, and are High current supplies, look at what a CPU
uses, many Amps..

These Switched Mode power Supplies us a Choke and a Electrolytic Cap to
filter out the Ripple, plus this ripple most be no more that the manufactures
specs for the CPU etc.

So they use Low ESR Elect Caps, as these produce the low ripple, and they
don't get hot like standard Elect caps do..

That Ripple energy has to be dissipated into the Elect cap, so if they are not
Low ESR they can get hot and dry out...

They also produce high ripple noise on the supply voltage..

The GHOST of WOGER. wrote:
> Modern MoBo's have some 3 or 4 Adjustable switched mode PSU's
>
> 1. CPU Voltage
> 2. Ram "
> 3. AGP "
>
>
> All these are adjustable, and are High current supplies, look at what
> a CPU uses, many Amps..
>
> These Switched Mode power Supplies us a Choke and a Electrolytic Cap
> to filter out the Ripple, plus this ripple most be no more that the
> manufactures specs for the CPU etc.
>
> So they use Low ESR Elect Caps, as these produce the low ripple, and
> they don't get hot like standard Elect caps do..
>
> That Ripple energy has to be dissipated into the Elect cap, so if
> they are not Low ESR they can get hot and dry out...
>
> They also produce high ripple noise on the supply voltage..

Thank you woger.
--
~misfit~

> That Ripple energy has to be dissipated into the Elect cap,

Not quite. A perfect electrolytic would be would not dissapate ANY energy.
High ESR caps dissapate energy because they have significant internal
resistance which heats because of the high ripple currents involved.

Regards

Ron

"The GHOST of WOGER." <> wrote in message
news:...
>
>
> Modern MoBo's have some 3 or 4 Adjustable switched mode PSU's
>
> 1. CPU Voltage
> 2. Ram "
> 3. AGP "
>
>
> All these are adjustable, and are High current supplies, look at what a
CPU
> uses, many Amps..
>
> These Switched Mode power Supplies us a Choke and a Electrolytic Cap to
> filter out the Ripple, plus this ripple most be no more that the
manufactures
> specs for the CPU etc.
>
> So they use Low ESR Elect Caps, as these produce the low ripple, and they
> don't get hot like standard Elect caps do..
>
> That Ripple energy has to be dissipated into the Elect cap, so if they are
not
> Low ESR they can get hot and dry out...
>
> They also produce high ripple noise on the supply voltage..
>
>
>
>
>
>