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Old 7th February 2012, 08:18 PM   #521
alex mm is online now alex mm  Romania
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Default PCB REV 1.8

...... I layout this rev 1.8 and ask you what's wrong with PCB ? Size only 190 mm X 88 mm . I can also modify OS PCB for us in better shape ......
Alex.
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Old 7th February 2012, 08:55 PM   #522
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Alex, that PCB looks good, but the diyAudio PCB needs to work with heatsinks already drilled for a different project to meet the goals set forth at the beginning.

It stinks OS is unable to give his final sign of approval on the board, but he has been inactive since 10/2011. I agree it is time to move on, especially since the PCB design seems to be complete except for some small details.
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Old 7th February 2012, 09:06 PM   #523
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Quote:
Originally Posted by alex mm View Post
...... I layout this rev 1.8 and ask you what's wrong with PCB ? Size only 190 mm X 88 mm . I can also modify OS PCB for us in better shape ......
Alex.
Nice PCB Alex, way to go!
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Old 7th February 2012, 10:34 PM   #524
AJT is offline AJT  Philippines
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Quote:
Originally Posted by alex mm View Post
...... I layout this rev 1.8 and ask you what's wrong with PCB ? Size only 190 mm X 88 mm . I can also modify OS PCB for us in better shape ......
Alex.
nice layout, users of Conrad Engineering hatsinks will find this layout very useful...
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Old 7th February 2012, 11:33 PM   #525
Variac is offline Variac  United States
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+1. We will move forward ASAP on getting the boards - That I promise..
Quote:
Originally Posted by Stormrider View Post
Alex, that PCB looks good, but the diyAudio PCB needs to work with heatsinks already drilled for a different project to meet the goals set forth at the beginning.

It stinks OS is unable to give his final sign of approval on the board, but he has been inactive since 10/2011. I agree it is time to move on, especially since the PCB design seems to be complete except for some small details.
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Old 9th February 2012, 01:42 AM   #526
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Quote:
Originally Posted by alex mm View Post
...... I layout this rev 1.8 and ask you what's wrong with PCB ? Size only 190 mm X 88 mm . I can also modify OS PCB for us in better shape ......
Alex.

love that alex mm is here for us . his pcb design work just amazes me !!!! however i do question all the heat from the outputs so tightly together .

cheers Woody
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Old 9th February 2012, 02:17 AM   #527
AJT is offline AJT  Philippines
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imho, having those power trannies close together means they will track each other better, not a bad thing......especially when using conrad engineering heatsinks....
Conrad Heatsinks - Products
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Old 9th February 2012, 05:47 AM   #528
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Alex, the decision to put the rails both on one side of the board, instead of wrapping around it was made for a reason. Furthermore, the feedback point is at not at the output terminal where it should be. OS's board was very carefully designed. Do not underestimate OS's work.

- keantoken
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Old 9th February 2012, 12:13 PM   #529
AndrewT is online now AndrewT  Scotland
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Do not redesign the Ost PCB.

Variac, don't dare say a word !
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Old 9th February 2012, 02:01 PM   #530
AKN is offline AKN  Sweden
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Hi Andrew,

I remember that it was you who influenced OS to put the rails together. IMO a wise decision. If one wonder, just look back in the thread.


My
The layout could perhaps be even better while keeping the OS style layout. If we look at the PS section, loop area could be smaller. The cap closest to output section could feed BJT's furthest away and vise verse...
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