125B · 2 knobs
PedalPCB· PCB708
Fumble Boost
Based on the JHS Fumble· 4 other boards clone it
- Category
- Boost
- Price
- $10.00in stock
- Tags
- 125B, 125B 2-Knob (Type 1)
From the vendor
Controls
• Input
• Level
Details
• Designed for a 125B enclosure with top-mounted jacks
Schematic
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.
Parts list 16 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| R1 | 1M5 | 1.5M | Resistor, 1/4W | |
| R2 | 1M | 1M | Resistor, 1/4W | |
| R3 | 5K6 | 5.6k | Resistor, 1/4W | |
| R4 | 100R | 100 | Resistor, 1/4W | |
| CLR | 4K7 | 4.7k | Resistor, 1/4W | * LED current limiting resistor |
| Capacitors 6 | ||||
| C1 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 100p | 100p | Ceramic capacitor | |
| C3 | 4u7 | 4.7u | Electrolytic capacitor, 5mm | |
| C4 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C100 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C101 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| Diodes 1 | ||||
| D100 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| Transistors 1 | ||||
| Q1 | J309 | J309 | JFET transistor, N-channel | |
| Potentiometers 2 | ||||
| INPUT | B2M | B2M | 16mm right-angle PCB mount pot | |
| LEVEL | B10K | B10k | 16mm right-angle PCB mount pot | |
| Trimmers 1 | ||||
| BIAS | 20K | 20k | Trimmer potentiometer, 3362P type | |
Other boards based on the JHS Fumble
- JHS Fumble Boost Dirtbox Layouts
- BBC Dumb Fuzz Dog · 1590B · £24.00
- Fumble PCBWay: Glory to Ukraine
- Cast Sheep Sheepylove · €5.00