Fuzz face PNP adaptor problem

[emerswin]

any help for my second build...I built the PNP Transistor, Positive Ground FF from GGG with the germaniums from smallbear. Sounds great with a battery. Won't work with a pos tip adaptor. Any suggestions? I guess it could be a bad adaptor jack, but it's a new one...

[petemoore]

Battery
 GEO Spyder
  Anything except 'adapter' 'cause FF's don't like'em

[emerswin]

tried a different adaptor jack...same thing. If I had know this I wouldn't even have drilled the hole in the box...

[R.G.]

Your problem may be that most power adapters put out positive on the outer shell of the plug and negative on the inner pin, backwards from most jacks. If you're not careful, you hooked up the power jack backwards. Worse, unless the jack is isolated from the housing, the jack hooks positive to the shell - which may work for you in this one case, but for NPN negative ground pedals it's a huge problem

I would get out my DMM and find out what is happening to the voltage on my PCB when I plug in a power adapter rather than junking it. Then at least you'd know.

[petemoore]

I put a leather coat on a box, it was sparking against the adjacent box, I don't know if PS issues caused that or not, I was running batteries.
 I suppose it would, since you have + of battery one on box 1's shielding and negative of battery 2 on box 2's shielding....cable inbetween connecting the + and - grounds...