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Chip Amps Amplifiers based on integrated circuits

My tiny single sided LM3886 PCB layout. :)
My tiny single sided LM3886 PCB layout. :)
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Old 12th July 2005, 05:21 PM   #1
Russ White is offline Russ White  United States
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Default My tiny single sided LM3886 PCB layout. :)

Please have a look at this and tell me what you think.

It is designed to utilize Carlos' Snubberized PS.

Cheers!
Click the image to open in full size.
Click the image to open in full size.
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Old 12th July 2005, 09:31 PM   #2
Russ White is offline Russ White  United States
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Well I guess there is nothing seriously wrong with it or someone would have piped up by now.
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Old 12th July 2005, 09:49 PM   #3
tobias_svensk is offline tobias_svensk  Sweden
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Helu Russ, do you have Eagle in your "Autostart"?

I'm sure it will work, and I'm also sure that you already have etch it?

On my board (wich is a 99% BrianGT copy, so thanks/sorry Brian ) I added snubberz before the big cap.
http://www.ettnet.se/~tobias/diy/lm3886/3886.png
Another (big)
http://www.ettnet.se/~tobias/diy/lm3...3886opabuf.png

Keep spitting 'em out...
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Old 12th July 2005, 10:08 PM   #4
Russ White is offline Russ White  United States
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Quote:
Originally posted by tobias_svensk
Helu Russ, do you have Eagle in your "Autostart"?
Ah autostart now there an idea!

Nice work Tobias!

Thanks for the reassurance.
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Old 12th July 2005, 11:31 PM   #5
asgorath is offline asgorath  United States
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could you please post the eagle files?
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Old 13th July 2005, 03:09 PM   #6
Russ White is offline Russ White  United States
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Quote:
Originally posted by asgorath
could you please post the eagle files?

I will let this think loose into the wild only after I have tested it.
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Old 13th July 2005, 03:11 PM   #7
Russ White is offline Russ White  United States
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Default Update

OK, I tweaked the layout a little and etched the boards. I will build the amp tonight. Here is the latest layout:

Click the image to open in full size.
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Old 13th July 2005, 03:20 PM   #8
richie00boy is offline richie00boy  United Kingdom
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My tiny single sided LM3886 PCB layout. :)
Nice, but no zobel option?
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Old 13th July 2005, 03:23 PM   #9
Russ White is offline Russ White  United States
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Quote:
Originally posted by richie00boy
Nice, but no zobel option?

I have thought about adding that. But, my speakers already have zobels in them, so I figured why have two zobels in the output?
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Old 13th July 2005, 04:12 PM   #10
richie00boy is offline richie00boy  United Kingdom
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My tiny single sided LM3886 PCB layout. :)
The zobel in the speakers is a different zobel to the one on the amp output.
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