[sdiy] Fuzz

[René Schmitz]

Hi Niklas,

> I tested this rather simple fuzz circuit:
> http://www.montagar.com/~patj/jshfuzz.gif
> 
> But I have run into problems, that I'm pretty sure you can help me to
> solve. I can't get the circuit to work. I tested with my scope and I have a
> nice signal at Q1 base, and a signal at Q2 base but there is no signal at
> Q2 emitter or collector. So I tried to replace Q2 with a new one, but that
> didn't help. Then I discovered that I had put a 22k resistor instead of
> 22ohm (in some versions there is a 220ohm instead) at the Q3 emitter, maybe
> this did destroy the new Q2?

Q2 isn't properly biassed. I think that because of this the transistor 
doesn't do anything. Add a biassing network to the base of Q2.
(Maybe a divider of 220k/22k or something.)

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159