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Old 30th September 2011, 06:23 PM   #11
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I think an AC kit without the transformer might be attractive as it should save alot on shipping for us internationals.
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Old 30th September 2011, 09:17 PM   #12
amc184 is offline amc184  New Zealand
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Sure, I could do that. I'm not sure that it would save a whole lot though, these transformers aren't that large or heavy.
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Old 30th September 2011, 09:47 PM   #13
quan is offline quan  Australia
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Hi , i would be interested on -2DC/2AC kits please.
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Old 1st October 2011, 08:17 AM   #14
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what Is measured jitter at 11.289 MHz and 16.9344 MHz
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Old 1st October 2011, 06:14 PM   #15
pchw is offline pchw  United States
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I am interested in 6 boards, destined USA. Thx!
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Old 1st October 2011, 07:14 PM   #16
Ginum is offline Ginum  Lithuania
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I am interested in 4 bare boards.
Thanks.
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Old 1st October 2011, 10:46 PM   #17
amc184 is offline amc184  New Zealand
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Okay, it seems there is enough interest for a group buy. Here is what I am going to do:

- In a weeks time (the 9th of September) I will close the first round of this group buy and order the PCBs.
- When the PCBs arrive I will build a couple of units using them and test them. When I'm happy that all is okay with them, I will start accepting payments.
- After I've received payment I'll send out the PCBs to those who wanted bare PCBs and I will order the parts for the kits.
- When all the parts for the kits have arrived I'll send out the PCBs and kits to those who wanted them.

In response to specific questions:

@samoloko: Unfortunately I don't have the equipment necessary to produce a quotable figure for jitter. I have taken both objective and subjective measurements (comparisons of the jitter at a CD player's output and listening tests) that indicate that it has significantly lower jitter compared to a stock CD player master clock.

@apoopoo999: The cost of two DC powered kits shipped to the USA will be about USD57.50 in total.
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Old 2nd October 2011, 01:25 AM   #18
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Hi, great project. Can I suggest bypassing the "upper" voltage dividing resistor for the TL431 regulators with a decent sized say 10uf cap? This reduces noise considerably.

Rob
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Old 2nd October 2011, 02:48 AM   #19
amc184 is offline amc184  New Zealand
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That's something I considered, but I left it out because of space constraints. I think the PSU will be low enough noise as it is, but thanks for the suggestion anyway.
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Old 2nd October 2011, 02:44 PM   #20
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the DC and AC mains pcb got 5 usd price ?
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