Sandspur Fuzz

Based on the Analogman Sunface BC108· 1 other board clones it

From the vendor

Controls

• Fuzz – Adjusts the amount of fuzz

• Volume – Controls the output volume

• Sun – External bias control

• Clean (internal trim) – Cleans up the fuzz signal (similar to rolling back guitar volume)

• Bias (internal trim) – Internal (preset) bias control

Specifications

• Designed for a 125B enclosure with top-mounted jacks

Documentation

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type
Resistors 5
R1	100K	100k	Resistor, 1/4W
R2	33K	33k	Resistor, 1/4W
R3	1K	1k	Resistor, 1/4W
R4	470R	470	Resistor, 1/4W
R10	4K7	4.7k	Resistor, 1/4W
Capacitors 4
C1	1u	1u	Electrolytic capacitor, 5mm
C2	22u	22u	Electrolytic capacitor, 5mm
C3	10n	10n	Film capacitor, 7.2 x 2.5mm
C6	47u	47u	Electrolytic capacitor, 5mm
Diodes 1
D1	1N5817	1N5817	Schottky diode, DO-41
Transistors 2
Q1	BC108	BC108	BJT transistor, NPN TO-18
Q2	BC108	BC108	BJT transistor, NPN TO-18
Potentiometers 3
VOLUME	A250K	A250k	16mm right-angle PCB mount pot
SUNDIAL	B5K	B5k	16mm right-angle PCB mount pot
FUZZ	B1K	B1k	16mm right-angle PCB mount pot
Trimmers 2
CLEAN	50K	50k	Trim potentiometer (3362P type)
BIAS	5K	5k	Trim potentiometer (3362P type)