Enclosure not stated · 5 knobs
PedalPCB / Chuck D. Bones Purple Dragon Fuzz
Based on the PedalPCB Chuck D. Bones Purple Dragon Fuzz
From the post
Schematic is avaiable HERE.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 41 rows
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Check before you build · 2 values the reader of this layout was not sure of
- 75K at column 16 rows C-E: printed clearly, unusual value
- Mids pot printed '20kW': W taper kept as printed (W20K)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×4 | 10K | 10k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×2 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 75K | 75k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 390K | 390k | read from the layout by eye | |
| ×1 | 3.9K | 3.9k | read from the layout by eye | |
| ×1 | 560Ω | 560 | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| Capacitors 13 | ||||
| ×3 | 47nF | 47n | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 470nF | 470n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 68nF | 68n | read from the layout by eye | |
| ×1 | 6.8nF | 6.8n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 1uF | 1u | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×3 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q2 | 2N5087 | 2N5087 | read from the layout by eye | |
| Q3 | P28 | P28 | Low gain with low leakage PNP Germanium; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL074 | TL074 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Gain | C1K | C1k | Potentiometer | read from the layout by eye |
| Fuzz | C250K | C250k | Potentiometer | read from the layout by eye |
| Treble | B10K | B10k | Potentiometer | read from the layout by eye |
| Mids | W20K | W20k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
| Switches 3 | ||||
| Fat | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Clip | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Mid Shift | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |