On Mon, Sep 30, 2013 at 12:36 AM, Doug wrote:
> On 09/29/2013 06:02 AM, Joel Rees wrote:
>> On Sun, Sep 29, 2013 at 5:18 AM, Doug wrote:
> /snip/
>>>
>>> Do I understand correctly that there are two switching power supply
>>> chips at the input to the CPU to produce 3.3Volts? Obviously, a linera
From http://www.debian.org/News/weekly/2011/05/#offtopic ...
Have you ever wanted to discuss things completely unrelated to Debian or
even computers with fellow users or developers? On debian-user the
custom is to put [OT] in the subject and fire away.
Unfortunately, this can be disruptive for un
On Sun, 2013-09-29 at 13:20 -0400, Doug wrote:
> On 09/29/2013 06:47 AM, Ralf Mardorf wrote:
> > On Sun, 2013-09-29 at 19:02 +0900, Joel Rees wrote:
> >> I7m confused. Did you mean can't produce a gain in current or power?
> >
> > Assumed there should be a linear voltage regulator able to provide
On Sun, 2013-09-29 at 11:36 -0400, Doug wrote:
> So a linear regulator is a lossy device
law of conservation of energy --->
energy exchange -->
thermal conduction
If you use it as voltage stabiliser + heater, it provides 100%
efficiency too. It's simply a question of the point of view.
;)
--
On 09/29/2013 06:47 AM, Ralf Mardorf wrote:
> On Sun, 2013-09-29 at 19:02 +0900, Joel Rees wrote:
>> I7m confused. Did you mean can't produce a gain in current or power?
>
> Assumed there should be a linear voltage regulator able to provide the
> needed Ampere, how large should the heat sink be? T
On 09/29/2013 06:02 AM, Joel Rees wrote:
> On Sun, Sep 29, 2013 at 5:18 AM, Doug wrote:
/snip/
>>
>> Do I understand correctly that there are two switching power supply
>> chips at the input to the CPU to produce 3.3Volts? Obviously, a linera
>> regulator cannot produce and gain in current. Iin =
On Sun, 2013-09-29 at 19:02 +0900, Joel Rees wrote:
> I7m confused. Did you mean can't produce a gain in current or power?
Assumed there should be a linear voltage regulator able to provide the
needed Ampere, how large should the heat sink be? The voltage isn't an
issue. By a quick search I found
On Sun, Sep 29, 2013 at 5:18 AM, Doug wrote:
> On 09/28/2013 03:23 PM, Stan Hoeppner wrote:
>> On 9/27/2013 6:37 PM, Joel Rees wrote:
>>> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner
>>> wrote:
A point I forgot to make. This is something everyone should know.
Subject: The mark
>>
Yes, though they are for different voltages, typically 3.3V and 2.5V or
1.8V, see the voltage monitoring in the BIOS or MB monitor for the
values for a particular board.
You'll find two inductors, probably toroids, and a group of tall
aluminium electrolytic capacitors in the are
On Sat, 2013-09-28 at 19:15 -0500, Stan Hoeppner wrote:
> However, another cost saving aspect to this I didn't mention
> previously is component commonality. If a vendor sizes it PSUs
> optimally, most if not every PSU in the line can use the same
> regulator FETs. For instance, a 25A regulator c
On 9/28/2013 3:18 PM, Doug wrote:
> On 09/28/2013 03:23 PM, Stan Hoeppner wrote:
>> On 9/27/2013 6:37 PM, Joel Rees wrote:
>>> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner
>>> wrote:
A point I forgot to make. This is something everyone should know.
Subject: The marketing myth o
On Sat, 28 Sep 2013 16:18:30 -0400
Doug wrote:
> On 09/28/2013 03:23 PM, Stan Hoeppner wrote:
> > On 9/27/2013 6:37 PM, Joel Rees wrote:
> >> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner
> >> wrote:
> >>> A point I forgot to make. This is something everyone should know.
> >>>
> >>> Subject:
On 09/28/2013 03:23 PM, Stan Hoeppner wrote:
> On 9/27/2013 6:37 PM, Joel Rees wrote:
>> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner
>> wrote:
>>> A point I forgot to make. This is something everyone should know.
>>>
>>> Subject: The marketing myth of multiple +12V rails
>>> [...]
>>
>> What
On 9/27/2013 6:37 PM, Joel Rees wrote:
> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner wrote:
>> A point I forgot to make. This is something everyone should know.
>>
>> Subject: The marketing myth of multiple +12V rails
>> [...]
>
> What I want to know is why Intel CPUs still need the +12V.
T
On Sat, 2013-09-28 at 08:25 +0900, Joel Rees wrote:
> But the upshot is that capacitors are exposed to higher
> voltages and/or effective power than they can handle, and get burned,
> and it is a manufacturing problem, and sometimes an engineering
> problem.
And sometimes vendors knowingly use und
On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner wrote:
> A point I forgot to make. This is something everyone should know.
>
> Subject: The marketing myth of multiple +12V rails
> [...]
What I want to know is why Intel CPUs still need the +12V.
Have you considered copying these kinds of posts t
On Sat, Sep 28, 2013 at 2:29 AM, Doug wrote:
> On 09/27/2013 09:21 AM, Ralf Mardorf wrote:
> /snip/
>
>> However, undersized voltage for capacitors for switching power supply is
>> an often used fraud against consumers and switching power supplies
>> pollute the mains. Exotic resistors sometimes m
On 09/27/2013 09:21 AM, Ralf Mardorf wrote:
/snip/
> However, undersized voltage for capacitors for switching power supply is
> an often used fraud against consumers and switching power supplies
> pollute the mains. Exotic resistors sometimes make them a PITA when you
> want to repair one and you
On Fri, 2013-09-27 at 07:36 -0500, Stan Hoeppner wrote:
> It simply makes wiring your PC more difficult, as you have to balance
> your 12V devices across an arbitrary boundary placed across the 12V
> output current of your power supply.
> And of course, now you should be asking yourself, given wha
A point I forgot to make. This is something everyone should know.
Subject: The marketing myth of multiple +12V rails
Switching regulator MOSFETs provide the 3.3, 5/5VSB, and 12VDC output
current of a PC PSU. Before the days of waffle iron CPUs and GPUs, PSUs
had a single 12V regulator providin
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