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Old 26th January 2011, 05:58 PM   #61
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Quote:
Originally Posted by superR View Post
I today verified that pinkmouse's design still works
Good, I need to build a couple more.
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Old 26th January 2011, 06:09 PM   #62
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So, at the risk of asking a question that been asked tons of times and on an old thread to boot: what can I do with the Eagle files? Does the free version of Eagle allow you to import them and modify? Does it allow you make the Gerber files with it? Can you import Eagle into some of the other free PCB software?
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Old 26th January 2011, 06:13 PM   #63
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Whatever you want, yes, yes, don't know, (I only have Eagle and Protel and they don't play together, others may).
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Old 26th January 2011, 07:26 PM   #64
superR is offline superR  Netherlands
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If you are interested in the "ready to etch" pdf's I can upload those for you. It is a basic application of the LM4780 but it seems to work well. Pinkmouse, what is your exoerience with the zobel resistor and cap? I have not used it since I did not have the parts. If you can convince me to use them, I will purchase the parts
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Old 26th January 2011, 07:37 PM   #65
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I used to live next door to the Crystal Palace TV transmitter, and had a few problems with noise getting back up the speaker lines with the NS chips, the Zobel sorted it, and I've since been putting it in by habit. You might not need it, but it doesn't hurt. Your call.
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Old 26th January 2011, 09:30 PM   #66
superR is offline superR  Netherlands
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Hmmz, ok, what values do you use and what power rating? There is only one mentioning of some sort of protection circuit which uses 2.7ohm 2 watt and 100nf, is that right?
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Old 26th January 2011, 09:49 PM   #67
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Unless you want to dig into the maths and work out the exact corner frequency, 2.7 -10 ohm values are practical with your 100nF.
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Old 31st January 2011, 11:35 AM   #68
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Afternoon folks, updated version is now attached. Layout and grounding improved, and dimensions reduced to fit my current application. As always, files in Eagle format, lines on top copper are jumpers. Enjoy.
Attached Files
File Type: zip LM4780narrow.zip (69.0 KB, 220 views)
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Old 17th February 2012, 03:23 AM   #69
yugaaa is offline yugaaa  India
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Default My LM4780

I tried pinkmouse pcb and it works . The Amp is super silent and yes , i used the component values from audiosector .Thanks to pinkmouse and Peter .
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File Type: jpg IMG_0952.JPG (193.4 KB, 382 views)
File Type: jpg IMG_0953.JPG (154.7 KB, 379 views)
File Type: jpg IMG_0954.JPG (148.7 KB, 369 views)
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Old 17th February 2012, 03:30 AM   #70
GloBug is offline GloBug  Canada
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Cool man!
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