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Old 11th June 2011, 01:31 PM   #4931
woood09 is offline woood09  Netherlands
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Hi apoopoo999
It looks very good.
Have fun.
Woood09
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Old 11th June 2011, 02:38 PM   #4932
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Quote:
Originally Posted by Dr.H View Post
Stunning mate! Any guidelines for someone hoping to do something similar?
Size and thickness of Aluminum slab?
Where did you have it cut, etc.
The aluminum is 2" thick, here is a copy of the template I sent to the machine shop
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File Type: pdf CD_Chassis_Part2a.pdf (123.5 KB, 225 views)
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Old 11th June 2011, 03:33 PM   #4933
BMW850 is offline BMW850  Netherlands
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Hi apoopoo999,

Very very nice, maby is this some inspiration for the display?

Regards,
Rudy
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Old 11th June 2011, 07:18 PM   #4934
Pocoyo is offline Pocoyo  Indonesia
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Quote:
Originally Posted by Dr.H View Post
Stunning mate! Any guidelines for someone hoping to do something similar?
Size and thickness of Aluminum slab?
Where did you have it cut, etc.
Here is the picture for thickness alumunium slab
Good Luck
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Old 11th June 2011, 11:19 PM   #4935
BMW850 is offline BMW850  Netherlands
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Quote:
Originally Posted by Erik van Voorst View Post
Hi Rudy

I am waiting for your pictures of platform/puck in action.
I reckon you also do no longer post on the dutch htforum like I use to do...

Erik
Hi Erik,

I've just created a few photos and it looks pretty good I say so myself.
It strikes me now that there are many CDs that are not purely flat.

Of topic:
Spent today with my DDDAC to build in 7 Sallas regulator, connected to 1 Transformer 2x12 volt 500VA.
The problem is when I connect 3 Sallas regulator to the DDDAC receiver board I blow up the diodes on the minus side from 1 Sallas regulator

2 Sallas regulator works good, after that I connect the third Sallas regulator to another 12 volt transformer and everything works fine.
And I must say the sound is realy good with only 3 Sallas regs on the receiver board.

What is the reason why the diodes blows up from the third one, who giveís the right answer to me?
Sallas told me there is no problem to connect 7 Sallas regulator to 1 Transformer

That I no longer write on the Dutch forum is because there are no Shigaclone builders anymore

Rudy
Edit: more fotos
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File Type: jpg P1010119.JPG (109.5 KB, 632 views)
File Type: jpg P1010125.JPG (117.3 KB, 612 views)
File Type: jpg P1010126.JPG (119.3 KB, 598 views)
File Type: jpg P1010127.JPG (106.4 KB, 234 views)
File Type: jpg P1010129.jpg (100.3 KB, 293 views)
File Type: jpg P1010128.jpg (111.0 KB, 303 views)
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Last edited by BMW850; 11th June 2011 at 11:44 PM.
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Old 12th June 2011, 12:03 AM   #4936
BMW850 is offline BMW850  Netherlands
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2 more pictures 1 with a bottle what I need now
And the other one how I connect the DDDAC with the 3 Sallas regulator.
The + 12volt DC is not connected.

Regards,
Rudy
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File Type: jpg P1010130.jpg (89.5 KB, 245 views)
File Type: jpg DDDAC.jpg (424.4 KB, 275 views)
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Last edited by BMW850; 12th June 2011 at 12:05 AM.
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Old 12th June 2011, 12:21 PM   #4937
BMW850 is offline BMW850  Netherlands
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This is the final definitive schematic of the Salas regulator.
I hope this is the right one, I ask in the other thread the schematic and I get this one.
I hope somebody can help me to connect all the Sallas regs to the DDDAC to use 1 Transformer.

Regards,
Rudy
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File Type: gif 1V2RposMedium.gif (9.4 KB, 299 views)
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Old 12th June 2011, 09:06 PM   #4938
woood09 is offline woood09  Netherlands
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Hi rudy,
I saw the drawing of the regulator, and there isn't an op-amp in the circuit. Use a Sulzer or a Walt Jung reg,
make some by yourself, they are easy to bult, cheap,stable and very good. I have no doubt that they are better then the one on the drawing.
I have good results with the Sulzer regs, and the circuits
are free to download on the Walt Jung site.
Give it a try!!

Woood09
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Old 14th June 2011, 04:46 AM   #4939
nezbleu is offline nezbleu  Canada
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Hi:

Not sure where you got that regulator schematic, but it shows DC in, not AC. I think the diodes you are blowing are not on the schematic, so it is hard to diagnose why they are blowing. Also, the schematic you posted has sense connections which you do not show on your earlier wiring diagram; do your Salas reg boards have sense connections?

Anyway, if you are blowing the rectifier diodes then you are puling too much current through them. This would imply that the regulator is shorted to ground. I don't know anything about the circuit you are connecting to, but you should double-check your connections. You should also fuse your transformer primary so you blow a cheap fuse instead of rectifiers or other components.
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Old 14th June 2011, 04:51 AM   #4940
nezbleu is offline nezbleu  Canada
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Quote:
Originally Posted by woood09 View Post
Hi rudy,
I saw the drawing of the regulator, and there isn't an op-amp in the circuit.
The presence or absence of an op-amp is irrelevant to the performance of a regulator. Some very good Jung-style series voltage regulators use op-amps as error amps. The Salas regulator design is a shunt regulator, and does not use an op-amp, but it performs very well indeed.

The problem here is not one of regulator performance. The problem is he is blowing up the (rectifier?) diodes in his regulator. This suggests the regulator is hooked up incorrectly, and a Jung/Sulzer regulator will perform no better under such circumstances.

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