Does anyone know how PCI Express sound cards derive sufficient positive and negative voltages to drive the op-amp stages?
The PCI bus supplies + and - 12V. The PCI Express bus supplies only +5V and +3V.
The PCI bus supplies + and - 12V. The PCI Express bus supplies only +5V and +3V.
PCI vs. PCI-Express Sound Card Supply Voltages - Update
I had to reply to my own thread to include the PCI and PCI-E bus pinouts so everyone would know what I was talking about. The "editorial" staff does not allow edits after 30 minutes.
Anyway ... pinout tables are attached.
I had to reply to my own thread to include the PCI and PCI-E bus pinouts so everyone would know what I was talking about. The "editorial" staff does not allow edits after 30 minutes.
Anyway ... pinout tables are attached.
On my Xonar STX you connect a power molex to the card to power the boards outputs. If you want you can build a regulated linear supply to drive the card.
- Status
- Not open for further replies.