Fuzz Factory 1590BThis is the Fuzz Factory in a 1590B enclosure, a classic DIY fuzz pedal project that can be built with either germanium or silicon transistors.
Designators and components Step 2 of 5
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
D1 1N4001 1N4001 DIODE 1A 50V
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
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
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
You can use either germanium (Q2 AC128 Hfe 60-80 and Q3 AC128 Hfe 100-120) or silicon transistors (2N3906). Follow the figures for the correct position of the transistors.
It is recommended to use sockets for the germanium transistors. You can use 3 pin headers (40 PIN DIP SIP IC SOCKETS ADAPTOR SOLDER TYPE).
GENERAL DESCRIPTION OF COMPONENTS
Use a multimeter or the color bands to obtain the resistance value. Resistors do not have polarity, you can place them in any direction.
Electrolytic capacitors have their value printed on them. The negative polarity pin is indicated by a white strip along the can. They also have a longer leg indicating the positive pin. The maximum voltage rating never can be exceeded, make sure you are using at least double voltage rating than your power supply. For example, if you are using a 9V power supply, use a electrolytic capacitor with at least 18V maximum voltage rating.
Polyester capacitors have their value marked with three numbers. Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. These capacitors do not have polarity, you can place them in any direction.
Diodes have their model printed on them. The polarity (cathode) is indicated by the ring near the side. This ring is also marked on the PCB.
Led diodes have polarity, the cathode is indicated as a flat surface on the side of the diode and also it is the shorter led. On the PCB, the cathode is marked as a flat side and anode as a round side.
Transistors are three terminals components and their model is printed on them. To indicate the correct orientation, one side of the transistor is flat and the other one is round.
Potentiometers have their resistance value marked on them. They are marked with A, B or C for logarithmic, linear and reverse logarithmic, respectively.