FuzzDog Exploder, Instruction Manual

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Sch BOM
R1 1M
R2 1M
R3 4K7
R4 1K
R5 470R
R6 470R
R7 100K
R8 100K
R9 1K5
C1 1u elec
C2 1n
C3 47p
C4 100p
C5 68n
C6 1u elec
C7 22u elec
C8 100u elec
D1 1N4001
Q1 2N5457*
Q2-3 2N2222**
XFM1 42TL019
T1 4K7-10K trim
T2 100K trim***
BIAS 10KB
VOL 100KA***
*Original uses PF5102. It makes no difference at all to the sound. Pads are provided
for through-hole or SMT FETs. The SMT version of 2N5457 is MMBF5457.
**Original uses 2N497. Try any low gain BJT transistors in here.
Pinout on the PCB is E B C with emitter indicated by the tab.
***Use a trimmer OR the volume pot. Not both.
Other transformers may work but we’ve only tried it with this one.
Note: the 42TL series has a much smaller footprint than 42TM, so don’t mix them up.