Hi,
I will order a little batch boards primary for Naim CD Player / Streamer (ND5 XSS, NDX, NDX2...) and DAC.
Facts:
- 280x400mm PCB
- 2mm thick, 2 OZ Cu
- 6+1 Rail (2 balanced rails, 2 unbalanced and one extra unbalanced for an extend output)
- each Rail 3.3-45V / 1-1,5A
- HF, DC transormer primary blocker with VDR´s
- Active Rectifiers based on LT4320 and MOSFET´s
- Common Mode Choke´s at transformer secundary
- optional CRC Snubber
- CRC (20.000µF) at main rails
- Cap Multiplier with BDW93/94C
- Stacked Regulators inspired by Jung/Didden Super Regs with some enhancements (trimpot to adjust output voltage, option for TL431 Voltage Ref...)
The board price depends on the number of pieces.
I think around 80€ for the Mainboard and 8-10€ for each Regulator-Board.
The Regs are tested.
See attachements
ToDo:
- complete shematic
- test layout
- write bom
I will order a little batch boards primary for Naim CD Player / Streamer (ND5 XSS, NDX, NDX2...) and DAC.
Facts:
- 280x400mm PCB
- 2mm thick, 2 OZ Cu
- 6+1 Rail (2 balanced rails, 2 unbalanced and one extra unbalanced for an extend output)
- each Rail 3.3-45V / 1-1,5A
- HF, DC transormer primary blocker with VDR´s
- Active Rectifiers based on LT4320 and MOSFET´s
- Common Mode Choke´s at transformer secundary
- optional CRC Snubber
- CRC (20.000µF) at main rails
- Cap Multiplier with BDW93/94C
- Stacked Regulators inspired by Jung/Didden Super Regs with some enhancements (trimpot to adjust output voltage, option for TL431 Voltage Ref...)
The board price depends on the number of pieces.
I think around 80€ for the Mainboard and 8-10€ for each Regulator-Board.
The Regs are tested.
See attachements
ToDo:
- complete shematic
- test layout
- write bom
Attachments
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The PSU blow a Teddy Pardo or Naim XPS DR away.
Much more deeper soundstage with huge power for every little event.
Tested with a Naim DAC, Naim NDX and Naim NDX 2.
Much more deeper soundstage with huge power for every little event.
Tested with a Naim DAC, Naim NDX and Naim NDX 2.
Sounds terrific Meldano!
But with the superreg in place, I keep wondering if it really would make a difference if you would bypass the cap multiplier and one 10k Uf cap.
When using the remote sense connections the output resistance of the superreg is really really very low.
But with the superreg in place, I keep wondering if it really would make a difference if you would bypass the cap multiplier and one 10k Uf cap.
When using the remote sense connections the output resistance of the superreg is really really very low.
You are correct regarding the caps to PE after the CMC. Filtering would improve.
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The VDR is only to prevent high voltage from L/N to PE. I don’t prefer Y-Caps in audio applications.
Daniel
Daniel
It's not about the cap type, it is about effectivity of filtering without caps to PE. A filter should filter as good as possible, especially in audio.
I would keep the VDR's though.
I would keep the VDR's though.
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