Big Muff Pi PCB

mictester · Post by **mictester** » 31 Oct 2009, 03:01

I was asked to make a few Big-Muff-Pi-alikes recently. Here is the board layout I used, and the components I chose. The diodes were all vanilla 1N4148, and the transistors were all metal-canned BC109C (I've got a lot of them).

Hope this layout is useful. I drilled a couple of holes near the lower corners to attach mounting pillars, and used the pots to support the upper end of the board. The PCB fits rigidly into the box. I used a foam block to contain the battery, and the whole thing fits into a small Eddystone diecast box.

SPeter · Post by **SPeter** » 31 Oct 2009, 19:27

Thanks!

whydoesitmatter · Post by **whydoesitmatter** » 09 Nov 2009, 21:05

roseblood11 · Post by **roseblood11** » 10 Nov 2009, 23:38

"Electric Warrior" has posted a really great layout at musikding.de:
http://forum.musikding.de/cpg/thumbnails.php?album=246

mictester · Post by **mictester** » 11 Nov 2009, 00:35

roseblood11 wrote:"Electric Warrior" has posted a really great layout at musikding.de:
http://forum.musikding.de/cpg/thumbnails.php?album=246

It's OK, but it's bigger than mine, and I think mine is a bit neater! I've made a lot of BMPs with this board, and haven't had any of the problems that you often get with high gain circuits. The layout seems to work very well.