Power Supply PCB for ES9023 / WM8804 S/PDIF DAC Group Buy - diyAudio
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Old 26th August 2012, 12:12 AM   #1
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Default 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
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Old 28th August 2012, 07:30 AM   #2
danzup is offline danzup  Romania
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I want also a pcb . Can you add me on list ?
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Old 30th August 2012, 08:48 AM   #3
GuidoR is offline GuidoR  Italy
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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
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Old 30th August 2012, 10:11 AM   #4
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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.
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Old 30th August 2012, 03:32 PM   #5
Veggiel is offline Veggiel  Belgium
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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.
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Old 31st August 2012, 09:23 AM   #6
GuidoR is offline GuidoR  Italy
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Quote:
Originally Posted by jean-paul View Post
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
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Old 31st August 2012, 02:37 PM   #7
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Quote:
Originally Posted by Veggiel View Post
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?
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Old 9th September 2012, 06:56 AM   #8
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Quote:
Originally Posted by doors666 View Post
Is this just for the psu pcb or can we get the dac boards also?
This GB is only for the PSU PCB.
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Old 9th September 2012, 07:03 AM   #9
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Updated the first post with pricing / schedule information. Feel free to ask questions if you have any.
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Old 9th September 2012, 08:59 AM   #10
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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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