PCB for Inverted Gainclone

[2Bak]

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/showthread.php?postid=269537#post269537

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

/Jan

 

[2Bak]

circuit and components side

another zip

 

[2Bak]

it looks like this..

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

 

[2Bak]

componets side

components side

 

[cm961]

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

The DIY Audio community appreciates your efforts.

Pete

 

[2Bak]

Amp finished

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

/Jan

 

[peranders]

Very nice looking, indeed.

 

[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

 

[2Bak]

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