Power Supply PCB for ES9023 / WM8804 S/PDIF DAC Group Buy

unixdeveloper · 05:56 AM

All -

As mentioned in the DAC GB thread here is the thread dedicated to the PSU PSB for our ES9023 / WM8804 S/PDIF DAC.

I have attached the signup sheet here (with interest from DAC PCB GB copied). Will post the details of pricing and estimated shipping date in the next few days.

Schematics:
https://docs.google.com/open?id=0B9E...kJuY3RjMGFfU2s

BOM:
https://docs.google.com/open?id=0B9E...U5sWkJrSWxuRmM

Group Buy Closed.

Cheers!
Subbu

danzup · 28th August 2012, 07:30 AM

I want also a pcb . Can you add me on list ?

GuidoR · 30th August 2012, 08:48 AM

Any chance to have the schematic? (I can guess from the BOM that is very similar to that of the datasheet, plus some tricks as the common mode choke, but there are some components left over...)

Thanks

Guido

jean-paul · 30th August 2012, 10:11 AM

Schematics will only be sent to those that buy a board. The BOM should be enough to buy parts etc. It is standard datasheet schematic PNP pass transistor and common mode choke + some extra decoupling.

A chip that has been around for 40 years has proven its merits. There are very few improvements that can be made with the already excellent LM723.

Veggiel · 30th August 2012, 03:32 PM

Please add me to the list for one board.
I never saw a message with the combined shipping option for the dac boards, I probably missed it.

GuidoR · 31st August 2012, 09:23 AM

Quote:

Originally Posted by jean-paul

Schematics will only be sent to those that buy a board. The BOM should be enough to buy parts etc. It is standard datasheet schematic PNP pass transistor and common mode choke + some extra decoupling.

A chip that has been around for 40 years has proven its merits. There are very few improvements that can be made with the already excellent LM723.

Thanks jean-paul, it was my thought.
I'll add myself to the list.

Guido

doors666 · 31st August 2012, 02:37 PM

Quote:

Originally Posted by Veggiel

Please add me to the list for one board.
I never saw a message with the combined shipping option for the dac boards, I probably missed it.

Is this just for the psu pcb or can we get the dac boards also?

unixdeveloper · 9th September 2012, 06:56 AM

Quote:

Originally Posted by doors666

Is this just for the psu pcb or can we get the dac boards also?

This GB is only for the PSU PCB.

unixdeveloper · 9th September 2012, 07:03 AM

Updated the first post with pricing / schedule information. Feel free to ask questions if you have any.

necplusultra · 9th September 2012, 08:59 AM

question:

would it be possible to have another group buy for the dac pcb?

OR:

would it be possible to sell me another dac pcb?

26th August 2012, 12:12 AM	#1
unixdeveloper diyAudio Member Join Date: Jun 2010 Location: SF Bay Area	Power Supply PCB for ES9023 / WM8804 S/PDIF DAC Group Buy All - As mentioned in the DAC GB thread here is the thread dedicated to the PSU PSB for our ES9023 / WM8804 S/PDIF DAC. I have attached the signup sheet here (with interest from DAC PCB GB copied). Will post the details of pricing and estimated shipping date in the next few days. Schematics: https://docs.google.com/open?id=0B9E...kJuY3RjMGFfU2s BOM: https://docs.google.com/open?id=0B9E...U5sWkJrSWxuRmM Group Buy Closed. Cheers! Subbu Last edited by unixdeveloper; 9th December 2012 at 05:56 AM. Reason: GB Closed

28th August 2012, 07:30 AM	#2
danzup diyAudio Member Join Date: Oct 2007 Location: Bucuresti	I want also a pcb . Can you add me on list ? __________________ There are not better tube than 6P3S and 6N2P for my ears !

30th August 2012, 10:11 AM	#4
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: Germany	Schematics will only be sent to those that buy a board. The BOM should be enough to buy parts etc. It is standard datasheet schematic PNP pass transistor and common mode choke + some extra decoupling. A chip that has been around for 40 years has proven its merits. There are very few improvements that can be made with the already excellent LM723. __________________ It's only audio

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30th August 2012, 08:48 AM	#3
GuidoR diyAudio Member Join Date: Jun 2006 Location: Bergamo	Any chance to have the schematic? (I can guess from the BOM that is very similar to that of the datasheet, plus some tricks as the common mode choke, but there are some components left over...) Thanks Guido

30th August 2012, 03:32 PM	#5
Veggiel diyAudio Member Join Date: Jun 2010	Please add me to the list for one board. I never saw a message with the combined shipping option for the dac boards, I probably missed it.

9th September 2012, 07:03 AM	#9
unixdeveloper diyAudio Member Join Date: Jun 2010 Location: SF Bay Area	Updated the first post with pricing / schedule information. Feel free to ask questions if you have any.

9th September 2012, 08:59 AM	#10
necplusultra diyAudio Member Join Date: Jan 2011 Location: sitting down	question: would it be possible to have another group buy for the dac pcb? OR: would it be possible to sell me another dac pcb?

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