I returned to DIY electronics in 2009 after a 20 year pause by building a few kits to get in shape. This blog is for me to keep track of my progress.
LME49830 based amp
This is an implementation of National's reference design for LME49830 with two matched pairs of 2SK1530+2SJ201 per channel. The PCBs were made using National's gerbers (thus National's logos). Sounds surpisingly good, but it has just been completed; I did not have a chance to listen to it carefully yet.
Update: I rebuilt the amp as a pair of monoblocks, each delivering healthy 200W into 8 ohms. It now looks tidier.
Update: the original Gerbers from National are nowhere to be found since national.com was merged into ti.com. Attached are the original archives downloaded from the national.com.
Update: I rebuilt the amp as a pair of monoblocks, each delivering healthy 200W into 8 ohms. It now looks tidier.
Update: the original Gerbers from National are nowhere to be found since national.com was merged into ti.com. Attached are the original archives downloaded from the national.com.
Total Comments 5
Comments
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Very old post.....how does it sound, if you still have it?Posted 26th July 2012 at 05:56 PM by Inprogress
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It sounds ok; not that I can point at any specific problem, but it always leaves something to be desired.Posted 2nd August 2012 at 11:10 AM by alexcp
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Do you have AN-1850 & AN1849 gerber file ?
I can't find them on internet because national.com become ti.com .Posted 26th September 2012 at 03:52 AM by cctv628
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I have them and I attached them to the blog post.Posted 28th September 2012 at 09:02 PM by alexcp
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Thanks a lotPosted 2nd October 2012 at 12:40 PM by cctv628
