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Old 8th May 2012, 02:31 PM   #1
superR is offline superR  Netherlands
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Default ESP P3A Amp (99% finished, page 12)

There are many PCB layout screenshots of this amplifier on the forum. However, none seem to be sharing the Eagle files. I want to alter a proven/working design in order to suit my wishes. However, with no initial Eagle files I'm "lost".
Who has a P3A amplifier Eagle design and is willing to share?

Last edited by superR; 27th August 2012 at 01:42 PM.
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Old 8th May 2012, 03:29 PM   #2
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There are always threads for FAQs - you can search threads frpm the home page`
Note that this design is copyright and the forum may not encourage blatant attempts to avoid it.
Rod Elliot P3A Layout - Critics
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Old 8th May 2012, 03:38 PM   #3
superR is offline superR  Netherlands
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I have read all those threads but as soon as the amp layout is approved by those who know what they are talking about there is no Eagle zip-file in sight.

"The author (Rod Elliott) grants the reader the right to use this information for personal use only"

Does that mean one cannot put an Egle zipfile online so that others can use it for personal evaluation too?

Last edited by superR; 8th May 2012 at 03:46 PM.
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Old 8th May 2012, 06:57 PM   #4
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Nope, but often they are shared privately. Surely, you can PM members if you are interested in their work. Posting files on a public forum is not just for personal use - it goes out to any person or organization seeking to quickly capitalise on your work without effort.

I would hope that at least permission was sought from a rip-off who was looking to build clones for profit from my work, don't you?
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Old 8th May 2012, 07:52 PM   #5
superR is offline superR  Netherlands
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"to build clones for profit from my work"
Well that's not the case. Anyway, I will try and find someone to help me.
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Old 9th May 2012, 10:27 AM   #6
superR is offline superR  Netherlands
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Day two,

What about this layout?
Picture
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Old 9th May 2012, 10:39 AM   #7
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Absolutely terrible, its a disaster.

Power traces are way too thin, the CCS for the IPS is miles away, the IPS transistors are not joined front to front for thermal balance, to mention a few.
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Old 9th May 2012, 10:45 AM   #8
superR is offline superR  Netherlands
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Damn, I took the design below as an example which was said to be well designed. Even Sakis, who had commented on 90% of all P3A-layouts said it was ok.

P3A layout
http://www.zelfbouwaudio.nl/forum/do...5458&mode=view
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Old 9th May 2012, 11:49 AM   #9
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OMG ......
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Old 9th May 2012, 11:55 AM   #10
superR is offline superR  Netherlands
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The reason I mentioned your name was because of the fact that in a lot of topics you commented on the layout. Finally I found one that you say is not terrible;
Quote:
this is more or less they lay out i ve done ...with a few minor changes .....

this will work with out any problems at all
Initially I copied the component location of that design and all of a sudden it turns out to be terrible/disastrous.
Attempt4;
http://www.zelfbouwaudio.nl/forum/do...5476&mode=view

Last edited by superR; 9th May 2012 at 11:57 AM.
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