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Old 28th September 2012, 10:38 AM   #81
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Default PCB

Hi,
I am going to order few PCbs for this amp.Please let me know if anyone wants a PCB.


Regards,
Sachin
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Old 28th September 2012, 04:42 PM   #82
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Well guys, i just tested the boards on a stereo setup and work like charm, rly quiet and no distortion or hummmm sound.

Ty guys for help me to make this pcb.

Cheers
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Old 28th September 2012, 06:14 PM   #83
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necrofago, hope you noticed that your latest files had an error - the polarity of C1 was
wrong. I fixed it and make some minor cosmetic improvements.
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File Type: png lm3886-fix.png (34.0 KB, 183 views)
File Type: png lm3886-fix-sch.png (12.6 KB, 182 views)
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File Type: zip lm3886-fix.zip (66.9 KB, 46 views)
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Old 28th September 2012, 07:19 PM   #84
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Ty quadtech i didint saw it, i just build the amp from memory. Ty for the advice.
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Old 6th October 2012, 06:51 PM   #85
vilts is offline vilts  Estonia
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I downloaded the Eagle files from quadtech post #83, but for some reason I can't see the ground plane. Any ideas of what I might be doing wrong in Eagle?
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Old 6th October 2012, 07:29 PM   #86
KSTR is offline KSTR  Germany
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Use the "ratsnest" button, or simply type "r" (then return) in Eagle's command line.

You can specify if ratsnest processes polygons or not :
"set poly on"
"set poly off"
in the commandline, again (and without ")

Once a polygon have been rendered, there is no easy way to turn it off again, but there are workarounds :
a) drag one edge a bit away, then back again, then refresh display (zoom out, etc).
c) close the .BRD only and the open it again from the schematic editor. DO save changes if prompted so, otherwise board and schematic will be inconsistent and will stop being updated synchronuously (the so-called back-annotation).
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Old 8th October 2012, 08:40 PM   #87
vilts is offline vilts  Estonia
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Thanks, 'ratsnest' command did the trick.
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