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Old 15th June 2010, 07:53 PM   #3941
RCruz is offline RCruz  Switzerland
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Fantastic results.

Did you use NOS BG or did you save them from previous experiments ?

If these are NOS, how long did you burn them in ?
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Old 15th June 2010, 10:10 PM   #3942
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No aren't NOS, are from older projects so are burned.

Imagine the BIG change BG does that now I have to adjust the value for C2 RIAA capacitors: after 16nF024 now 15nF977 & possible will finish 15nF930 or less.
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Old 15th June 2010, 10:12 PM   #3943
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So they are BOS ? burned old stock
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Old 15th June 2010, 10:52 PM   #3944
RCruz is offline RCruz  Switzerland
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BOS might be even better than NOS

Everything depends on the burning.
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Old 15th June 2010, 10:57 PM   #3945
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by NPower View Post
Just finished my main PCB according Salas instructions.
I attached files for main, copper and silkscreen in PDF format.

Right now I gonna prepare my self to etch my first PCB.
Nice work !

Please post some pictures of the pcb (after you etch them).
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Old 16th June 2010, 07:41 AM   #3946
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Quote:
Nice work !

Please post some pictures of the pcb (after you etch them).
Yes, it looks good.

But a comment to the grounding: afaik it is not good to change from wide traces to narrow traces and vice versa.

Specially not when currents are flowing, what is the case for the grounding, specially between the bypass caps.

Franz

/Edit: try to explain (afaik): different size of traces is resulting in minimal differences of conducitvity eg. resistance. When currents are flowing this will produce voltage differences on the grounding traces. And this is to be avoided. Better use one trace width, as large as possible.

Last edited by Franz Gysi; 16th June 2010 at 07:47 AM.
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Old 16th June 2010, 10:44 AM   #3947
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Quote:
Originally Posted by RCruz View Post
BOS might be even better than NOS

Everything depends on the burning.
The burning was doing with 1st quality wood (ebony) & slow fire to cook the cap as better as possible.
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Old 16th June 2010, 10:52 AM   #3948
RCruz is offline RCruz  Switzerland
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You did not forget the garlic did you ?
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Old 16th June 2010, 10:55 AM   #3949
massimo is offline massimo  Italy
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In your pcb I don't like IN gnd + RL gnd not referred with thier own track to star gnd. If you connect them to D4 gnd and R2V gnd, you mix up Signal gnd and Power gnd. Not good at all.
Take example from OUT gnd and R8 gnd: correct routing.
Plenty of space to fix this problem....
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Old 16th June 2010, 01:55 PM   #3950
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Originally Posted by RCruz View Post
You did not forget the garlic did you ?
I forgot thanks for advice I will do "a la llauna" catalan typical foot
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