fuzz face cap connection confusion

[kvb]

two schematics with two different orientations of C2.

Just need to clarify.

Which end of the cap goes to the wiper of the fuzz pot - positive or negative.  I'm using an electrolytic.

Jack Orman's at muzique.com has the positive end going to the wiper.

[delbowski]

hi...

take a look at the schematics at GGG

http://www.generalguitargadgets.com/index.php?%20option=content&task=view&id=154&Itemid=18354

looks like the pnp version has the negative side to fuzz and the npn has the positive side to fuzz.  that seems to be the difference.  as jd says the easiest one is the pnp negative ground, and you can use it with a common adaptor.  i'm by no means the final word on this, but that seems to be the answer i could find... hope this helps!

del

[twabelljr]

looks like the pnp version has the negative side to fuzz and the npn has the positive side to fuzz.  that seems to be the difference.

I agree. It depends on the type of transistors you are using.

[kvb]

Yes. I looked again and noticed the polarity as far as the different schematics are concerned.

I've got a layout from http://smallbox.zeonhost.com/   I think it has some mistakes.

I am using NPN. The positive battery lead goes to the top of the layout. so that means that the pot wiper is the + side and C2 goes to ground. yes?

[delbowski]

so that means that the pot wiper is the + side and C2 goes to ground. yes?

yup looks right... i find jd's layouts a lot easier to read though

http://www.generalguitargadgets.com/diagrams/fuzzface_lo_nn.gif

del

[guitar_199]

IMHO that smallbox layout has some issues.  He specs Ge PNP transistors, brings the positive side of the battery over to the PCB as ground and even correctly references the fuzz pot and the fuzz cap to that positive ground.  But then he takes the negative side of the battery runs it through the tradidtion sleeve-ring switching (which, unless he isolates the jacks, ties the negative battery to chassis) then uses it to ground the other jack, THEN feeds it to the PCB as power for the circuit....and then takes it on to the volume pot and uses it ( the negative) as the ground for the output pot.  Something about that makes me itch a little.

[kvb]

  i find jd's layouts a lot easier to read

Thanks for the link.   Having the right layout is a must for a beginner.

[3/4 North]

I've tried the 22uf and 2.2uf both ways with a NPN negative ground. It worked both ways and I heard no difference. The byoc board has them going opposite the "boutique fuzz" at ggg.