Enclosure not stated · 2 knobs
DOD Overdrive Preamp 250Verified
Based on the DOD 250 Overdrive Preamp· 11 other boards clone it
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 17 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×2 | 1M | 1M | one is an added input pulldown; read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 120pF | 120p | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N5817 | 1N5817 | added polarity protection; read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | 1N4148 or 1N914; read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | 1N4148 or 1N914; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Gain | C500K | C500k | Potentiometer | rev. log; read from the layout by eye |
| Level | A100K | A100k | Potentiometer | log (try lin); read from the layout by eye |
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