ge fuzz face problems

Started by ninjadave7, October 12, 2011, 03:20:08 PM

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ninjadave7

ok, good to know.  Didn't work on this for a while, but just built one using this layout, using 2N3906's:

http://www.aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/album18/album144/SILICON_FF_VERO_001.gif.html

it's doing the same thing.  I built it right to spec, no worrying about reversing polarity or anything.  Volume works kind of, the fuzz knob does nothing.  It's not sharing parts with old builds, so I don't know.   

Q1:
C=3.44v
B=2.81v
E=0v

Q2:
C=4.08v
B=3.44v
E=.57v
david L

LucifersTrip

Quote from: ninjadave7 on October 24, 2011, 07:22:43 PM
just built one using this layout, using 2N3906's:

http://www.aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/album18/album144/SILICON_FF_VERO_001.gif.html

I built it right to spec, no worrying about reversing polarity or anything.  Volume works kind of, the fuzz knob


I'm a bit confused by your wording. Did you or didn't you reverse polarity in this NPN layout you inked? You're using 2N3906 (PNP), so you have to...and the voltage readings should be negative.

always think outside the box

ninjadave7

Ok. I didn't realize the 3906 was different than the 3904.  It's been a long time since I did anything with transistors.  I DIDN'T do anything different than is diagrammed on the linked schematic, but I used a 3906, instead of a 3904, and that is a problem.

I was trying to just start over because people were confused by what I was saying at the beginning of the thread, when I had reversed polarity based on an AMZ schematic I was using, where Jack does that. 
david L