One Knob Fuzz

This is the One Knob Fuzz, a high gain silicon fuzz with a very smooth response. This pedal is a classic DIY project, it is very easy to build and has a great fuzz sound.
Steps

Created by DHEA
Status: Active
6ad5cfedb16d6a272994ad5c2b2b82c7?s=30

Designators and components Step 2 of 5

COMPONENT LIST 

PCB
PCB    ONE KNOB FUZZ DIY PCB GUITAR EFFECT
Capacitors        
C1    100n   100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2    220p    220PF 50V CERAMIC DISC CAPACITOR
C3    10u   10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C4    220n    220NF 0.22UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C5    47u    47UF 25V 105C ALUMINUM ELECTROLYTIC CAPACITOR 5X11MM PANASONIC
Transistors
Q1    BC109    BC109 BC109B NPN GENERAL PURPOSE TRANSISTOR
Q2    BC108    BC108 BC108B NPN SMALL SIGNAL TRANSISTOR
Resistors
R1    1M    1M OHM 1/4W 1% METAL FILM RESISTOR
R2    150k    150K OHM 1/4W 1% METAL FILM RESISTOR
R3    1k    1K OHM 1/4W 1% METAL FILM RESISTOR
R4    10k    10K OHM 1/4W 1% METAL FILM RESISTOR
R5    2.2k    2.2K OHM 1/4W 1% METAL FILM RESISTOR
R6    82    82 OHM 1/4W 1% METAL FILM RESISTOR
Potentiometer
VOL   500k-A    500K OHM LOGARITHMIC TAPER POTENTIOMETER
 

PCB

PCB SCHEMATIC

 

GENERAL DESCRIPTION OF COMPONENTS

Resistors

The resistors should be ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors do not have polarity, you can place them in any direction.

Electrolytic capacitors

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

The 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.

Ceramic capacitors

The ceramic 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 assemble them in any direction.

Transistors

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

Potentiometers have their resistance value marked on them. They are marked with A, B or C for logarithmic, linear and reverse logarithmic, respectively.