Enclosure not stated · 4 knobs
Prescription Electronics ExperienceVerified
Based on the Prescription Electronics Experience· 2 other boards clone it
From the post
Here is the well known Prescription Electronics Experience, a Foxx Tone Machine with extra switchable Swell effect.
Octave & Swell Switches Diagram:
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 39 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 3 values the reader of this layout was not sure of
- 78K resistor, right of centre, middle rows: printed clearly, unusual value
- 50n film cap, centre: printed clearly, unusual value
- 3n film cap, top right next to D4: printed clearly, unusual value (could be 3n3 cut short)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 17 | ||||
| ×5 | 100K | 100k | read from the layout by eye | |
| ×4 | 4K7 | 4.7k | read from the layout by eye | |
| ×3 | 47K | 47k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 470R | 470 | read from the layout by eye | |
| ×1 | 220R | 220 | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1K5 | 1.5k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 78K | 78k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 6K8 | 6.8k | read from the layout by eye | |
| ×1 | 4M7 | 4.7M | read from the layout by eye | |
| ×1 | 680K | 680k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×9 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100n | 100n | read from the layout by eye | |
| ×1 | 50n | 50n | read from the layout by eye | |
| ×1 | 3n | 3n | read from the layout by eye | |
| ×1 | 1n | 1n | read from the layout by eye | |
| C1 | 220n | 220n | suggested mod: 22n; read from the layout by eye | |
| Diodes 4 | ||||
| D1 | 1N4001 | 1N4001 | Try 1n4001, 1n4148 or 1n34A; read from the layout by eye | |
| D2 | 1N4001 | 1N4001 | Try 1n4001, 1n4148 or 1n34A; read from the layout by eye | |
| D3 | 1N34A | 1N34A | read from the layout by eye | |
| D4 | 1N34A | 1N34A | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | 2N3565 | 2N3565 | 2n3565 (3904, 5088...); read from the layout by eye | |
| Q2 | 2N3565 | 2N3565 | 2n3565 (3904, 5088...); read from the layout by eye | |
| Q3 | 2N3565 | 2N3565 | 2n3565 (3904, 5088...); read from the layout by eye | |
| Q4 | 2N3565 | 2N3565 | 2n3565 (3904, 5088...); read from the layout by eye | |
| Q5 | BC546 | BC546 | BC546 (3904, 5088...); read from the layout by eye | |
| Q6 | BC546 | BC546 | BC546 (3904, 5088...); read from the layout by eye | |
| Potentiometers 4 | ||||
| Volume | B50K | B50k | Potentiometer | read from the layout by eye |
| Fuzz | B50K | B50k | Potentiometer | read from the layout by eye |
| Tone | B50K | B50k | Potentiometer | read from the layout by eye |
| Swell | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Octave | DPDT | DPDT | read from the layout by eye | |
| Swell | DPDT | DPDT | read from the layout by eye | |
Other boards based on the Prescription Electronics Experience
- Prescription Electronics Experience Experimentalists Anonymous
- Prescription Electronics Experience turretboard.org