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RE: Power Supply for my sound card

Thank you very much, Greg!!! Here comes my pic:-



Tentlab clock + flea clock power supply and transformer




Superteddyreg and transformer




My sound card: SQ210A+




Close up to show how the SUperteddyreg is connected to SQ210A+



In the last pic, you can see the twisted wires (red and black) at the bottom right corner of the sound card. The connection is:-

Red wire, i.e. +3.3v from superteddyreg --> output pad of 1117 reg (desoldered) on the sound card PCB
Black wire, i.e. ground from superteddy --> ground pad of 1117 reg (desoldered) on the sound card PCB





Someone suggests that because the ground of the superteddyreg is not connected to the ground of my sound card (i.e. pin 50 or 51 of the gold finger, see: http://en.wikipedia.org/wiki/Conventional_PCI), the circuit does not work.

Therefore, I plan to add the connection between the black wire (already soldered to the ground pad of 1117 on the sound card PCB to pin 50. Any idea?

Thank you very much!!! (again ^.^)

P.S. I use I2S output by desoldering the DAC chip (AK4936 or something like that).

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