Fuzz Factory 1590B

The Fuzz Factory is an iconic five-knob fuzz pedal with a huge range of sound possibilities. This project is designed to fit into a compact 1590B enclosure.
Steps

Created by DHEA
Status: Active
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Designators and components Step 2 of 5

COMPONENT LIST

PCB
PCB             FUZZ FACTORY 1590B DIY PCB GUITAR EFFECT

Capacitors        
C1    10u      10UF 25V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C2    100n    100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C3    10u      10UF 25V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C4    10u      10UF 25V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C5    47u      47UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM

Diodes        
D1    1N4001       1N4001 DIODE 1A 50V

Transistors
Q1    2N3904       2N3904 NPN GENERAL PURPOSE TRANSISTOR
Q2    2N3906       2N3906 PNP GENERAL PURPOSE TRANSISTOR
Q3    2N3906       2N3906 PNP GENERAL PURPOSE TRANSISTOR
Q2/Q3   Socket    40 PIN 2.54MM DIP SIP IC SOCKETS ADAPTOR SOLDER TYPE

Resistors        
R1    220k    220K OHM 1/4W 1% METAL FILM RESISTOR
R2    10k      10K OHM 1/4W 1% METAL FILM RESISTOR
R3    470      470 OHM 1/4W 1% METAL FILM RESISTOR
R4    47k      47K OHM 1/4W 1% METAL FILM RESISTOR
R5    5.1k     5.1K OHM 1/4W 1% METAL FILM RESISTOR
R6    220k    220K OHM 1/4W 1% METAL FILM RESISTOR
R7    1M       1M OHM 1/4W 1% METAL FILM RESISTOR

Potentiometers        
STAB     5k-B      5K OHM LINEAR TAPER POTENTIOMETER
VOL       5k-B      5K OHM LINEAR TAPER POTENTIOMETER
COMP   10k-B    10K OHM LINEAR TAPER POTENTIOMETER
DRIVE   10k-B    10K OHM LINEAR TAPER POTENTIOMETER
GATE    10k-B    10K OHM LINEAR TAPER POTENTIOMETER

 

PCB

 

SCHEMATIC

 

TRANSISTORS

You can use either germanium (Q2 AC128, Hfe 60-80 and Q3 AC128, Hfe 100-120) or silicon (2N3906) transistors. Refer to the figures below for the correct orientation of the transistors.

 

TRANSISTOR SOCKETS

For easy swapping and experimentation, use either 3-PIN HEADERS or dedicated transistor sockets.