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Old 16th June 2015, 11:39 AM   #161
sq225917 is offline sq225917  United Kingdom
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Meldano's AC psu is very good. By far the best Ac controller I've built yet and I must have built twenty of so over the years.
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Old 18th June 2015, 11:22 AM   #162
meldano is offline meldano  Germany
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Here a blog in german

krishu.de AC-Motorsteuerung mit uController
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Old 18th June 2015, 03:28 PM   #163
merlin el mago is offline merlin el mago  Europe
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Quote:
Originally Posted by sq225917 View Post
Meldano's AC psu is very good. By far the best Ac controller I've built yet and I must have built twenty of so over the years.
You have pm
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Old 19th June 2015, 03:31 PM   #164
kffern is offline kffern  Australia
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Originally Posted by sq225917 View Post
Meldano's AC psu is very good. By far the best Ac controller I've built yet and I must have built twenty of so over the years.
sq225917,
What voltage transformer did you use?
I can only get 2x25v so wondering if there was any overheating problems.
Regards,
kffern
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Old 19th June 2015, 05:12 PM   #165
sq225917 is offline sq225917  United Kingdom
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I used a pair of dual secondary 18v 30VA traffos.mthe PSU has adjustable voltage, you'll be fine.
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Old 20th June 2015, 02:23 PM   #166
kffern is offline kffern  Australia
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Originally Posted by sq225917 View Post
I used a pair of dual secondary 18v 30VA traffos.mthe PSU has adjustable voltage, you'll be fine.
I'm not sure what you mean by "a pair". Did you use 18v x 2 TX?
Any pictures or diagrams of your build would be of assistance. I'm not sure how well google translate will convert the instructions.
Thanks,
kffern
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Old 20th June 2015, 03:10 PM   #167
meldano is offline meldano  Germany
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You can use one transformer with 2x18V secondary or two transformers with 1x18V
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Old 20th June 2015, 03:58 PM   #168
sq225917 is offline sq225917  United Kingdom
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Kffern, I was assuming you were referring to stepping up the output voltage, not which mains transformer to use to power it. I built mine exactly as per the instructions from Daniel. 1x 18v / 15va.

https://www.flickr.com/photos/596848...7629553367709/
If you look in my flicker you'll see a version for 20v output and a 110v version.
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Old 21st June 2015, 02:40 AM   #169
kffern is offline kffern  Australia
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Thanks sq,
I will wait for Daniels instructions before asking any more questions.
The BOM he sent me stated a 2x22v TX for the power supply, which is not available here. I can get 2x18 and 2x25v easily.
kffern
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Old 15th August 2015, 09:38 AM   #170
Drewaudio is offline Drewaudio  New Zealand
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I've just completed my build based on Meldano's board. I used a transformer with two 25vac windings which proved perfect to drive a Rega 24v motor.

I'm really impressed with Meldano's software design and implementation. My Rega performs better and sounds better than the stock 24vac walwart. Top stuff...

Andrew
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