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Old 11th December 2011, 11:49 PM   #951
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Quote:
Originally Posted by pchw View Post
Hi Greg,

The way I connected is the same as Erin's diagram in DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532. I used to wires to connect one wiring section of the {12-0}-12 to the second AC connector.

Thanks!!
Did you add the link under the PCB when you used a single transformer?
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Old 12th December 2011, 12:00 AM   #952
pchw is online now pchw  United States
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Hi Greg,

See the attached picture of how I connected to the 2nd AC connector with one transformer. I didn't have any other connection under the PCB.

Thanks!!
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File Type: jpg DSC07092.JPG (150.7 KB, 974 views)
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Old 12th December 2011, 12:05 AM   #953
F1 FAN is offline F1 FAN  Canada
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The second bridge rectifier(in digital sec.)is not needed,simply adding a jumper at the alotted space on the bottom of PC Board will feed the positive DC voltage to the digital section.

Last edited by F1 FAN; 12th December 2011 at 12:08 AM.
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Old 12th December 2011, 12:15 AM   #954
pchw is online now pchw  United States
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Originally Posted by F1 FAN View Post
The second bridge rectifier(in digital sec.)is not needed,simply adding a jumper at the alotted space on the bottom of PC Board will feed the positive DC voltage to the digital section.
Totally understood, I could run a wire from the +ve DC of the 1st bridge which is probably what Greg meant either.

It was more like the stubborn side of me trying to figure out why the configuration flowing around, as posted by Erin, would work for others but not me

Thanks,
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Old 12th December 2011, 02:07 AM   #955
erin is offline erin  Australia
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My diagram was incorrect. Oops, sorry. Embarrassing. Perhaps the moderators could remove the original diagram so others don't make that mistake.

Last edited by erin; 12th December 2011 at 02:13 AM.
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Old 12th December 2011, 02:16 AM   #956
pchw is online now pchw  United States
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Originally Posted by erin View Post
Was my cruel and unusual diagram incorrect?
It didn't work for me that way as you can see that's what I did at first.
If you follow the schematic, this wiring will effective connect the ground to one side of the AC input of the +3.3 connector.

Thanks,
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Old 12th December 2011, 02:19 AM   #957
erin is offline erin  Australia
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Yes. I see the problem now.
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Old 12th December 2011, 02:35 AM   #958
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Just in case there is still confusion to the link I was referring to, here is a picture, link in red.

And yes, only wire to 15-0-15 terminals.
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File Type: jpg link.jpg (83.9 KB, 935 views)
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Old 12th December 2011, 05:23 AM   #959
pchw is online now pchw  United States
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That's what I ended up doing after I saw yours and F1's reply.
Thanks for the hint!! Now, its time to make LPF correction and
other mods. Yes, I have ordered the parts :-)
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Old 12th December 2011, 09:58 AM   #960
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For the fun i try this output stage .

There is no output capacitor because there is one on my WA6 input ( Headphone tube amp ) .

My conclusions today .
Better than the OP ,better than the direct output ( Just a serial capa ,or the RC filter ) ...

Serge
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