LM4780 SS Pcb - Page 7

pinkmouse · 26th January 2011, 05:58 PM

Quote:

Originally Posted by superR

I today verified that pinkmouse's design still works

Good, I need to build a couple more.

leadbelly · 26th January 2011, 06:09 PM

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?

pinkmouse · 26th January 2011, 06:13 PM

Whatever you want, yes, yes, don't know, (I only have Eagle and Protel and they don't play together, others may).

superR · 26th January 2011, 07:26 PM

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

pinkmouse · 26th January 2011, 07:37 PM

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.

superR · 26th January 2011, 09:30 PM

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?

pinkmouse · 26th January 2011, 09:49 PM

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.

pinkmouse · 31st January 2011, 11:35 AM

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.

yugaaa · 17th February 2012, 03:23 AM

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 .

GloBug · 17th February 2012, 03:30 AM

Cool man!

26th January 2011, 06:09 PM	#62
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	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? __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

26th January 2011, 06:13 PM	#63
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Whatever you want, yes, yes, don't know, (I only have Eagle and Protel and they don't play together, others may). __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

26th January 2011, 07:37 PM	#65
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	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. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

26th January 2011, 09:49 PM	#67
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	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. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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26th January 2011, 07:26 PM	#64
superR diyAudio Member Join Date: Nov 2006	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

26th January 2011, 09:30 PM	#66
superR diyAudio Member Join Date: Nov 2006	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?

17th February 2012, 03:30 AM	#70
GloBug Banned Join Date: Jun 2011	Cool man!

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