PCB for Inverted Gainclone

2Bak · 14th December 2003, 07:37 PM

Please find attached PCB layout for IGC, suitable for multichannel GC poweramps. My friend Max made them, and they are cute

The pcb layout was designed for using ERO MKP 1841 filmcaps
http://www.vishay.com/docs/26019/mkp1841.pdf
and Caddock MP915 0,22 R at output.
1000uf's are Elna snap-in types, a bit larger than for example Panasonic FA or FC's, but those will fit also.

Both of these two circuit variations can be used:

http://ampchipdiy.com/invertedLM3875_r2_1.gif
http://home.comcast.net/~greggbaker/invertedLM3875.gif

Suitable pwr-bridge circuit/pcb could be this one:
http://www.diyaudio.com/forums/showt...537#post269537

PCB was designed so that the unused pins of LM3875T should be cut of.

/Jan

2Bak · 14th December 2003, 07:39 PM

another zip

2Bak · 14th December 2003, 07:44 PM

(not scale 100% when printing out, use the pdf-file in the Gainclone.zip instead).

2Bak · 14th December 2003, 07:48 PM

components side

cm961 · 14th December 2003, 10:37 PM

Your friend's design looks terrific. Thanks for taking the time to post it!

The DIY Audio community appreciates your efforts.

Pete

2Bak · 18th February 2004, 11:02 PM

See more pictures and details here:
http://2bak.homepage.dk/gainclone.htm

/Jan

peranders · 18th February 2004, 11:42 PM

Very nice looking, indeed.

palesha · 19th February 2004, 08:25 AM

We were very much impressed with the picture of bridge pcb posted on 11-23-2003. i will like to know which software u used to draw the same. Waiting for ur reply
Mahendra Palesha

2Bak · 19th February 2004, 09:09 AM

Quote:

Originally posted by palesha
We were very much impressed with the picture of bridge pcb posted on 11-23-2003. i will like to know which software u used to draw the same. Waiting for ur reply
Mahendra Palesha

My friend who did the pcb layout used Circad.
An evaluation copy can be dowloaded at http://www.holophase.com/

/Jan

18th February 2004, 11:42 PM	#7
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Very nice looking, indeed. __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

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14th December 2003, 10:37 PM	#5
cm961 diyAudio Member Join Date: Jun 2001 Location: Peterborough, Ontario	Your friend's design looks terrific. Thanks for taking the time to post it! The DIY Audio community appreciates your efforts. Pete

19th February 2004, 08:25 AM	#8
palesha diyAudio Member Join Date: Nov 2001 Location: Pune India	We were very much impressed with the picture of bridge pcb posted on 11-23-2003. i will like to know which software u used to draw the same. Waiting for ur reply Mahendra Palesha