Is anyone aware of any PSU kits that could be used for the purpose of powering up PC?
What I found so far is stuff that provides 5/12V but up to 1A, and it does not seem to be sufficient.
Can for example some amplifier PSU kits be adapted for such purpose?
I would not like to get involved in making PCB from some schematics, I would rather use some tried PSU kits and such if there is such a thing.
What I found so far is stuff that provides 5/12V but up to 1A, and it does not seem to be sufficient.
Can for example some amplifier PSU kits be adapted for such purpose?
I would not like to get involved in making PCB from some schematics, I would rather use some tried PSU kits and such if there is such a thing.
QUOTE]OK, what about keeping switching PSU and adding some additional regulation and filtering just before going into the motherboard? Does it make any sense?[/QUOTE]
Makes a ton of sense. I've asked this before, I'll ask again. For folks using a computer as a source component, why is it different from any other source? For an upgrade, isn't one of the first things you go after is to provide clean power?
Ignore that it is a SMPS and enjoy the large benefits of simple mods.
Makes a ton of sense. I've asked this before, I'll ask again. For folks using a computer as a source component, why is it different from any other source? For an upgrade, isn't one of the first things you go after is to provide clean power?
Ignore that it is a SMPS and enjoy the large benefits of simple mods.
compressit said:
Well, actually it doesn't make sense at all. The first problem is dissipation. With the currents consumed in PC's, linear regulation will easily add up to several counts of watts dissipation, even if you use post regulation.
Second problem is you don't resolve anything because the equipment inside the PC generates sufficient radiated and conducted emissions that a clean supply line will quickly turn just as "dirty" as all the others.
Third is size. You will *never* be able to fit all your transformers, regulators, capacitors and heatsinks in a reasonably sized box, to make any sense at all given the average size of a PC. You will go back to the Enigma-size computers. Let alone trying to fit it inside the PC box.
Linear Computer PSU: it's been tried before. Forget it.
True, but it is DIY. Where there is a will there is a way. Flat desktop box would be preferred to a tower for something like this. BTW, I did mean modding an existing ATX supply, not adding iron or regulation. Nobody has done this? Nobody has noticed any difference? Hard to believe. Quality rectifier, increased/ better smoothing caps as a crude start.
Please stay away from this.
Switching power supplies are a really sensitive species and all PC-power supplies are made under extreme cost pressure. They're stripped down to the bare minimum of parts that work flawlessly and randomly exchanging parts can _only_ lead to problems - right down to a defunct unit.
And dangerous is it as well as it works directly with lethal voltages.
I just don't see why one would want to modify the PSU instead of going directly for an external soundcard.
Have fun and stay safe, Hannes
EDIT: I'm very sorry, I really lost track of your original reason that is to reduce jitter. Why do you think that you have too much jitter in the first place?
SashaV said:
If you were aware of the ultra-high speed switching stuff taking place on your motherboard, and particularly on PCI, AGP and memory buses, you would regard the worst Chinese ATX power supply as wonderful
(in fact the old school ones still use bipolar transistors for very smooth switching).On the other hand, the own sound chipset which produces the analog outputs has a lot of high speed switching in it...
SashaV said:
Well, the blunt answer to that question is: No, and No.
Don't take this personally, because the pursuit of having a pristine power supply in a computer is -from an audiophile point of view- understandable.
The issue is that the need will not justify the means, and there are better ways to get improvements from your PC sound if that is what you pursue.
Linear PS for PC
I am doing just that with my PC in an Antec case using the Peter Daniels linear supply. He posted the schematic a few weeks ago.
Also see GStews posts on AA concerning the same issue. He has made numerous mods in this area.
Contrary to naysayers this does improve ripple and make noticable improvements in SQ if that is what you are after.
I am doing just that with my PC in an Antec case using the Peter Daniels linear supply. He posted the schematic a few weeks ago.
Also see GStews posts on AA concerning the same issue. He has made numerous mods in this area.
Contrary to naysayers this does improve ripple and make noticable improvements in SQ if that is what you are after.
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