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Class D Switching Power Amplifiers and Power D/A conversion

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Old 3rd January 2012, 04:03 PM   #1171
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Quote:
Originally Posted by Bruno Putzeys View Post
Tempting, isn't it?
Whoa, what's this Bruno, the design of the Hypex fully completed NC400 product?
 
Old 3rd January 2012, 04:09 PM   #1172
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Quote:
Originally Posted by Yves Smolders View Post
Whoa, what's this Bruno, the design of the Hypex fully completed NC400 product?
No it's something I threw together yesterday whilst waiting for the caffeine in my morning cup to wake up, pull itself together and get to work.
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Old 3rd January 2012, 04:19 PM   #1173
bavmike is offline bavmike  Canada
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Originally Posted by slowlearner View Post
I'm not sure the enclosure is big enough even for monoblocks (which I intend to build). Vincent's email said to simply subtract the wall thickness to arrive at interior dimensions and after doing so, I am not sure the enclosure will be big enough even for monoblocks to allow for any room around the boards.

And as far as shipping goes, I am used to getting stung on shipping. I live in Hawaii and Mainland companies often charge as much or more for similar shipping. It's like they think Hawaii is another country on the far side of the planet !

Interior dimensions should be 131mm wide x 282mm deep and 60mm high. The smps600 is 145x85x50 and the NC400 is 88mm wide and 37mm high. If you put the smps600 in the long way everything should fit fine. You will have 10mm clearance from the top of the lid, and 23mm clearance on each side of the smps600. And you will have 49mm extra space the long way, which should be enough to have a small gap between the modules and room for binding posts etc.

Last edited by bavmike; 3rd January 2012 at 04:25 PM.
 
Old 3rd January 2012, 04:28 PM   #1174
cOz is offline cOz  United States
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Do you all prefer black anodized or brushed aluminum? Does the ideal case hold 1 power supply and 2 amp modules or do you all want true mono 1 power supply and 1 amp module?
 
Old 3rd January 2012, 04:40 PM   #1175
bavmike is offline bavmike  Canada
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Originally Posted by cOz View Post
Do you all prefer black anodized or brushed aluminum? Does the ideal case hold 1 power supply and 2 amp modules or do you all want true mono 1 power supply and 1 amp module?

I think everyone has their own opinions and budgets, but I am going dual mono and like the look of a brushed aluminum front with black anodized sides\back\top\bottom. But for my project I'm going all black anodized because my DAC is all black anodized and I want them to match.
 
Old 3rd January 2012, 06:08 PM   #1176
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Quote:
Originally Posted by Bruno Putzeys View Post
Tempting, isn't it?
Obviously a Car Hifi Sub Amp
 
Old 3rd January 2012, 06:50 PM   #1177
Goophy is offline Goophy  Norway
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Quote:
Originally Posted by Bruno Putzeys View Post
So, all lights but no sound. Is it switching at all? Check by measuring DC offset with and without load. Without load and no switching the output wanders off a bit because output impedance becomes high.

Can you do a quick check of the supply voltage, say between a screw and the two pins marked with a red arrow.
DC offset without load is 1,39V.
DC offset with load is 2,2mV.

The supply voltage is 66.5V.
 
Old 3rd January 2012, 07:15 PM   #1178
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Not switching then. See PM.
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Old 3rd January 2012, 08:07 PM   #1179
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Quote:
Originally Posted by Bruno Putzeys View Post
No it's something I threw together yesterday whilst waiting for the caffeine in my morning cup to wake up, pull itself together and get to work.
Very nice drawing for a case. Where can you buy it?
 
Old 3rd January 2012, 09:29 PM   #1180
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Originally Posted by RogerSch View Post
Very nice drawing for a case. Where can you buy it?
Not in our web shop if that's what you're angling at

It was a sketch I made to liven up the case discussion. It would be quite cool to see not just a "group buy" but also a "group design" effort. But you need a first sketch for people to shoot at. And I just love toying with SketchUp. That's the real reason.
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Last edited by Bruno Putzeys; 3rd January 2012 at 09:48 PM.
 

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