Les Lius

PCB DESIGNATORS

PCB
PCB      LES LIUS PCB

Resistors        
R1    1M         1M OHM 1/4W 1% METAL FILM RESISTOR
R2    3.3M      3.3M OHM 1/4W 1% METAL FILM RESISTOR
R3    Not mounted
R4    3.3k       3.3K OHM 1/4W 1% METAL FILM RESISTOR
R5    330        330 OHM 1/4W 1% METAL FILM RESISTOR
R6    1k          1K OHM 1/4W 1% METAL FILM RESISTOR
R7    Not mounted
R8    Jumper
R9    Not mounted

Capacitors        
C1    47n       47NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2    47u       47UF 25V ELECTROLYTIC CAPACITOR 5X11MM
C3    100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C4    47u       47UF 25V ELECTROLYTIC CAPACITOR 5X11MM
C5    100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR

Transistors
Q1    2N5088     2N5088 GERENAL PURPOSE TRANSISTOR

Diodes
D1    1N914        1N914 SMALL SIGNAL DIODE 200MA 100V
D2    1N914        1N914 SMALL SIGNAL DIODE 200MA 100V
D3    BAT46        BAT46 SCHOTTKY BARRIER DIODE
D4    BAT46        BAT46 SCHOTTKY BARRIER DIODE
D5    BAT46        BAT46 SCHOTTKY BARRIER DIODE
D6    Not mounted

Switches
S1    Footswitch
S2    SPDT ON/OFF/ON        MINI TOGGLE SWITCH ON-OFF-ON

Potentiometers
VOL      100k-B    100K OHM LINEAR TAPER POTENTIOMETER
GAIN    1k-B        1K OHM LINEAR TAPER POTENTIOMETER

PCB

PCB SCHEMATIC

MODIFICATIONS

Replacing the diodes allows you to explore a range of distortion tones: germanium diodes (1N60, 1N270, or 1N34A) produce a softer, smoother distortion. Silicon diodes (1N914 or 1N4148) deliver a harder, more aggressive tone. LEDs create a fuzzier, crunchier sound. You can also experiment with different combinations, either symmetric or asymmetric clipping.

GENERAL DESCRIPTION OF COMPONENTS

Resistors

Resistors don't have polarity, so you can place them in any direction. Determine their resistance value by using a multimeter or by reading the color bands.

Electrolytic capacitors

Electrolytic capacitors have their value and maximum voltage rating printed on the body. The negative pin is indicated by a white stripe along the can, and it also has a shorter leg. The longer leg is positive. Never exceed the maximum voltage rating. Ensure the capacitor's voltage rating is at least double that of your power supply (e.g., use an 18V capacitor for a 9V power supply).

Polyester capacitors

Polyester capacitors don't have polarity and can be placed in any direction. Their value is marked using a three-number code. The first two numbers represent the first and second digits of the value, and the third number is the multiplier code (read in picofarads, pF).

Ceramic capacitors

Ceramic capacitors don't have polarity and can be placed in any direction. Their value is marked using a three-number code. The first two numbers represent the first and second digits of the value, and the third number is the multiplier code (read in picofarads, pF).

Diodes

Diodes have their model number printed on them. The polarity (cathode) is indicated by a stripe or ring near one end. This ring corresponds to the polarity marking on the PCB.

Led diodes

LEDs (Light Emitting Diodes) have polarity. The cathode is indicated by a flat edge on the side of the LED's plastic casing and a shorter leg. The longer leg is the anode. On the PCB, the cathode is marked with a flat side and the anode with a round side.

Transistors

Transistors are three-terminal components with their model number printed on them. To ensure correct orientation, one side of the transistor's body is flat while the other is curved.

Potentiometers

Potentiometers have their resistance value marked on them. They are also marked with a letter to indicate their taper: A for logarithmic, B for linear, and C for reverse logarithmic.