Enclosure not stated · 3 knobs
Boss OD-2r Turbo Overdrive - Turbo channel
Based on the Boss OD-2r Turbo Overdrive - Turbo channel
From the post
Schematic and more info about this circuit 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 42 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×14 | 4.7K | 4.7k | read from the layout by eye | |
| ×7 | 10K | 10k | read from the layout by eye | |
| ×5 | 100K | 100k | read from the layout by eye | |
| ×3 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 1.8K | 1.8k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 270K | 270k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| Capacitors 12 | ||||
| ×2 | 100pF | 100p | read from the layout by eye | |
| ×1 | 6.8nF | 6.8n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×2 | 18nF | 18n | read from the layout by eye | |
| ×3 | 22nF | 22n | read from the layout by eye | |
| ×1 | 27nF | 27n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×3 | 1uF | 1u | read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×3 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 8.2V Zener | 8V2 | read from the layout by eye | |
| D2 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 12 | ||||
| Q1 | J201 | J201 | JFET; 2SK117-GR in original; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; 2SK117-GR in original; read from the layout by eye | |
| Q3 | J201 | J201 | JFET; 2SK117-GR in original; read from the layout by eye | |
| Q5 | J201 | J201 | JFET; 2SK117-GR in original; read from the layout by eye | |
| Q6 | J201 | J201 | JFET; 2SK117-GR in original; read from the layout by eye | |
| Q4 | 2N3906 | 2N3906 | 2SA970-GR in original; read from the layout by eye | |
| Q7 | 2N3906 | 2N3906 | 2SA970-GR in original; read from the layout by eye | |
| Q9 | 2N3906 | 2N3906 | 2SA970-GR in original; read from the layout by eye | |
| Q8 | 2N3904 | 2N3904 | 2SC3378-GR in original; read from the layout by eye | |
| Q10 | 2N5088 | 2N5088 | 2SC2458-GR in original; read from the layout by eye | |
| Q11 | 2N5088 | 2N5088 | 2SC2458-GR in original; read from the layout by eye | |
| Q12 | 2N5088 | 2N5088 | 2SC2458-GR in original; read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | A250K | A250k | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |