External power for sound card in PCI slot?

SashaV · 3rd April 2009, 01:34 AM

Has anyone tried to bring an external clean regulated power to PCI sound card in a PC?
Apparently 3.3 Volts is what is needed to power up the card in a PCI slot.
I am thinking of doing so for Lynx L22 sound card so that it is not powered by switching PSU in PC, but I have no clue how it would be done, if I would have to lift up one leg on card’s PCI bus connector, or…?

luxury54 · 3rd April 2009, 07:42 AM

but the PC's ground is very noisy,so even if you would bring external regulated supply to the card ,you would still have to connect the GND,so i don't see the point...

SashaV · 3rd April 2009, 12:13 PM

Quote:

Originally posted by luxury54
but the PC's ground is very noisy,so even if you would bring external regulated supply to the card ,you would still have to connect the GND,so i don't see the point...

I assume there is really nothing that could be done about the ground, other than designing your own motherboard?

3rd April 2009, 01:34 AM	#1
SashaV diyAudio Member Join Date: Feb 2006 Location: Toronto	External power for sound card in PCI slot? Has anyone tried to bring an external clean regulated power to PCI sound card in a PC? Apparently 3.3 Volts is what is needed to power up the card in a PCI slot. I am thinking of doing so for Lynx L22 sound card so that it is not powered by switching PSU in PC, but I have no clue how it would be done, if I would have to lift up one leg on card’s PCI bus connector, or…?

3rd April 2009, 07:42 AM	#2
luxury54 diyAudio Member Join Date: Dec 2008	but the PC's ground is very noisy,so even if you would bring external regulated supply to the card ,you would still have to connect the GND,so i don't see the point... __________________ == NIHIL SINE DEO - Nothing Without GOD ==

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