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Old 11th March 2013, 01:23 PM   #1391
EUVL is offline EUVL  Europe
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> Which effects does offset at the inputs generate?

Different for different DACs.
Read datasheet and ask manufacturer at their application forum.


Patrick
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Old 11th March 2013, 10:02 PM   #1392
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Hello Patrick,
my SEN proto works fantastic with no noise at all.
Thanks a lot.
Guglielmo
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Old 11th March 2013, 10:50 PM   #1393
RollE2k is offline RollE2k  Sweden
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guglielmope: Is that a Single Ended set run on two simple 18v external AC(?) supplies?
interesting what regulators are you using between them and the SEN?
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Old 11th March 2013, 10:56 PM   #1394
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by guglielmope View Post
Hello Patrick,
my SEN proto works fantastic with no noise at all.
Thanks a lot.
Guglielmo
You have it connected single ended or only one channel is done?

Your build does not justify Italian design

But I know it sounds gooood...

Thanks to Patrick - of course
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Old 12th March 2013, 08:04 AM   #1395
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Yes It's Single Ended with 2 external 24V DC and Salas Shunt regolator.
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Old 12th March 2013, 11:26 AM   #1396
smms73 is offline smms73  Portugal
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That is interesting Guglielmo. I was thinking that a transformer with secondary away from primary was mandatory, like in a R-core transformer, to keep the line noises from getting in to the signal.
can you open the case of the transformer ?, just to see if it has separate primary and secondary, sometimes even a cheap transformer has them in separate bobbins. Thanks.
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Last edited by smms73; 12th March 2013 at 11:29 AM.
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Old 12th March 2013, 12:16 PM   #1397
RollE2k is offline RollE2k  Sweden
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Well, now i really need to order a custom r-core 4 x 0-18V secondary ~200-250mA, to try with - just waiting for the to92 coolers right now, and the possibly the transformer.
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Old 12th March 2013, 10:46 PM   #1398
smms73 is offline smms73  Portugal
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This is not a R-core transformer but it has a bobbin for primary separate from the secondary, so it has low interwinding capacitance and is very cheap.

FP24-500 Triad Magnetics | Mouser
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Old 14th March 2013, 07:50 AM   #1399
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Quote:
Originally Posted by RollE2k View Post
Well, now i really need to order a custom r-core 4 x 0-18V secondary ~200-250mA, to try with - just waiting for the to92 coolers right now, and the possibly the transformer.
how about 4 x 9Vac
you can always do a 2 x 18Vac
If you can arrange It there will be much people Involved and price will be lower
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Old 14th March 2013, 09:39 AM   #1400
CeeVee is offline CeeVee  Portugal
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Have you considered these ?

Selectronic
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