flat4power's Guepard - a VW type 1 oriented board

A home for new designs that are growing but haven't quite got their legs yet!
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Fred
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Re: Guepard board

Post by Fred »

flat4power wrote:
Fred wrote:What is the point of the top side ground traces on the caps/reg?
can you made a mark on the picture to localise the point ?
This latest one doesn't have it. All is well. Carry on :-)
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flat4power
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Re: Guepard board

Post by flat4power »

super
I continue tomorrow ;)

thanks for your help
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Re: Guepard board

Post by johntramp »

You should avoid ground loops too
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Re: Guepard board

Post by Fred »

johntramp wrote:You should avoid ground loops too
Please be more specific.
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Re: Guepard board

Post by Dan »

looking good :-)
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Re: Guepard board

Post by johntramp »

Fred wrote:
johntramp wrote:You should avoid ground loops too
Please be more specific.
http://www.ultracad.com/articles/loop.pdf
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Re: Guepard board

Post by Fred »

johntramp wrote:
Fred wrote:
johntramp wrote:You should avoid ground loops too
Please be more specific.
http://www.ultracad.com/articles/loop.pdf
Please don't be a dick on purpose.
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Re: Guepard board

Post by johntramp »

How is pointing him to an article on the topic being 'a dick on purpose'? It can easily be improved with a copper pour on the top layer as well.
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Re: Guepard board

Post by Fred »

OK, let me try to be more clear: Please point at something, anything, very specific, in his layout, that is wrong, and can be improved. The "copper pour" comment is along the right lines, but uses "as well" implying there is something else, which the article doesn't mention, because the author of the article has not seen this particular half-finished design ;-) I was wondering whether you simply failed to see what was missing or were being a smart arse. Clearly the former.
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Re: Guepard board

Post by johntramp »

Fred wrote:OK, let me try to be more clear: Please point at something, anything, very specific, in his layout, that is wrong, and can be improved. The "copper pour" comment is along the right lines, but uses "as well" implying there is something else, which the article doesn't mention, because the author of the article has not seen this particular half-finished design ;-) I was wondering whether you simply failed to see what was missing or were being a smart arse. Clearly the former.
By "as well", I was referring to "as well as the bottom layer". Going only by the small screenshot it looks like there hasn't been any consideration of return current paths. Eg. the ground path of the lower SMD IC inside the ignition block has a couple of paths out which all lead to pinch points.
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