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fuzz guys advice

Posted: Fri Mar 05, 2010 9:16 pm
by chisa
currently trying to build my own silicon fuzz. however, the only sound i am gettting out of it is a spluttering as though it is gated. is this down to a fucked transistor?

Posted: Fri Mar 05, 2010 9:41 pm
by Fran
Are they in the right order? One should be the 'hot' (forgot the correct terminology its been 4 years since i built Fuzz pedals) or the three legs could be in the wrong order. I had this problem but like i said it was a long time ago.

Posted: Fri Mar 05, 2010 9:58 pm
by chisa
i have em in the right way, however, on 1st attempt i may have put them in the wrong way and fucked them :lol:

did you get the pickups ok?

Re: fuzz guys advice

Posted: Fri Mar 05, 2010 11:18 pm
by NickS
chisa wrote:currently trying to build my own silicon fuzz. however, the only sound i am gettting out of it is a spluttering as though it is gated. is this down to a fucked transistor?
Not necessarily. My son built a silicon fuzz face and that's exactly what happened. I put the 1K gain pot the other side of the bypass capacitor and used a 2K2 in the second transistor emitter instead. Works great now. What circuit are you using?

Posted: Fri Mar 05, 2010 11:27 pm
by chisa
http://www.aronnelson.com/gallery/main. ... 1.gif.html

working to that

checked the soldering. have had it kinda working but got a load of RF noise with guitar vol at min. there does seem to be a problem at the gain pot though i am unsure what it is. i have rigged it with a 3pdt switch with an led and works fine on bypass and led working correctly so the circuit is getting power.

Posted: Sat Mar 06, 2010 12:02 am
by NickS
Just try disconnecting the 1K pot connection to ground (1K-1) and putting a 2K2 resistor from the emitter (e.g. hole next to 1K-3) to GND. I'm pretty sure that's the value I used.

Posted: Sat Mar 06, 2010 12:18 am
by Fran
chisa wrote:i have em in the right way, however, on 1st attempt i may have put them in the wrong way and fucked them :lol:

did you get the pickups ok?
Yeah, thanks mate ;)

It sounds like the transistors are'nt right fo sho. Silicon should be reliable though, may be better when one of the FX guys reads this.

Posted: Sat Mar 06, 2010 4:04 pm
by chisa
NickS wrote:Just try disconnecting the 1K pot connection to ground (1K-1) and putting a 2K2 resistor from the emitter (e.g. hole next to 1K-3) to GND. I'm pretty sure that's the value I used.
nice you're a genius! :D

why does that work then?

Posted: Sat Mar 06, 2010 4:23 pm
by chisa
although now the fuzz pot is either on or off. do i need to ground it?

Posted: Sat Mar 06, 2010 5:06 pm
by chisa
chisa wrote:although now the fuzz pot is either on or off. do i need to ground it?
solved this, i was using a 1000k pot instead ok 1k. doh!