Enclosure not stated · 4 knobs
Prescription Electronics YardboxVerified
Based on the Prescription Electronics Yardbox· 2 other boards clone it
From the post
Per request. Pretty close to a 3-knob Park Sound fuzz with some minor value changes. The additional "Gain" control like a second volume control? 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 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 18K | 18k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N34 | 1N34 | read from the layout by eye | |
| D2 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | PNP Germanium | PNP GERMANIUM | read from the layout by eye | |
| Q2 | PNP Germanium | PNP GERMANIUM | read from the layout by eye | |
| Q3 | PNP Germanium | PNP GERMANIUM | read from the layout by eye | |
| Potentiometers 4 | ||||
| Fuzz | B250K | B250k | Potentiometer | read from the layout by eye |
| Gain | B250K | B250k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
Other boards based on the Prescription Electronics Yardbox
- Prescription Electronics Yardbox Tagboard Effects
- Prescription Electronics Yard Box turretboard.org