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Old 23rd April 2012, 04:49 AM   #1
sofus79 is offline sofus79  Denmark
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Default atx linear power supply newbie help

where do i get the pcb i need for such a build
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Old 23rd April 2012, 04:57 AM   #2
sofus79 is offline sofus79  Denmark
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and how do i know if lets say the transformer fits etc
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Old 27th April 2012, 07:00 AM   #3
sofus79 is offline sofus79  Denmark
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no one ??
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Old 27th April 2012, 07:34 AM   #4
Boscoe is offline Boscoe  United Kingdom
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What power do you need? You will have to go for a 12v output after rectification then regulate for all the other voltages but it will have to be accurate output for a PC.
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Old 27th April 2012, 07:48 AM   #5
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Quote:
Originally Posted by sofus79 View Post
where do i get the pcb i need for such a build
This discussion took place last fall and it's a poor idea. What is the point of a massively inefficient power supply running a PC motherboard that has switching power supplies on it? You can't get rid of the ones on the motherboard. You'd fare far better with a better analog interface to the motherboard to eliminate ground loops which are FAR more troublesome than switching supplies. If you're using optical or digital outputs rather than analog, it truly is unimportant.

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Old 27th April 2012, 10:32 AM   #6
AndrewT is offline AndrewT  Scotland
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Save linear PSU for the few analogue circuits in the PC. That is if they can be separately fed.
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Old 27th April 2012, 10:58 AM   #7
sofus79 is offline sofus79  Denmark
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it has been don with great succes and its not inefficient coreaudioteknoligi has done so
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Old 27th April 2012, 12:00 PM   #8
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Originally Posted by AndrewT View Post
Save linear PSU for the few analogue circuits in the PC. That is if they can be separately fed.
I think that's an almost impossible challenge, UNLESS, you use the USB and then supply the USB sound card with a linear regulator.

There is so much digital switching going on that I can see very little benefit though.

IMHO far better just to buy a good quality sound card in the first instance.
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Old 27th April 2012, 01:34 PM   #9
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it has been don with great succes and its not inefficient coreaudioteknoligi has done so
I may be wrong but I don`t think the coreaudiotek is a linear supply, it is a switching supply with additional linear filtering. A complete ATX linear supply would be the size of a desktop PC and be probably less than 50% efficient. A decent quality soundcard is a much better option, or use something like a squeezebox touch.
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Old 27th April 2012, 01:45 PM   #10
sofus79 is offline sofus79  Denmark
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