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Old 13th December 2004, 05:46 PM   #1
wxn is offline wxn  Lithuania
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Default GC PSU PCB comments wanted :)

Ok, so here it is. Scematic closely (if not identically) corresponds to carlosfm's unregulated psu with snubbers.
Any comments?
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Old 13th December 2004, 05:47 PM   #2
wxn is offline wxn  Lithuania
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btw, the image is 300dpi
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Old 13th December 2004, 06:06 PM   #3
wxn is offline wxn  Lithuania
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And here's the amp itself.
LM3886, modified RoadKill's pcb.
And yes, I know, I shoud've used polypropilene caps wherever possible but they are very hard to get here and are a bit too pricey. I just hope my amp won't oscillate
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Old 13th December 2004, 11:50 PM   #4
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Default Re: GC PSU PCB comments wanted :)

Quote:
Originally posted by wxn
Ok, so here it is. Scematic closely (if not identically) corresponds to carlosfm's unregulated psu with snubbers.
Any comments? [/B]

the layout looks good for me,what is the footprint size of C3 and C4?

It would be better if the corner is a little softer.
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Old 14th December 2004, 04:52 AM   #5
wxn is offline wxn  Lithuania
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Diameter 35mm.
Which corner did you mean?
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Old 14th December 2004, 05:56 AM   #6
digi01 is offline digi01  China
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i have do some modify use paint
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Old 14th December 2004, 06:44 AM   #7
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I mean, that PCB of PA is uncorrect - pin 1 on output must be grouded.
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Old 14th December 2004, 07:23 AM   #8
wxn is offline wxn  Lithuania
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Upupa: no. That's a feature of RoadKill's design, it has been debated and seems to be good thing. After all, I can always connect these tracks or even ommit zobel...

digi01: thank you, the corrections make sense.
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Old 15th December 2004, 04:55 AM   #9
wxn is offline wxn  Lithuania
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No more faults spotted?
Good, I'm off to make some PCBs then
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Old 15th December 2004, 10:28 PM   #10
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can you post the files please
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