Enclosure not stated · 5 knobs
Paul Cochrane Zefram OverdriveVerified
Based on the Paul Cochrane Zefram Overdrive· 1 other board clones it
- Category
- Distortion
- Build
- Vero· 21×20· 31 cuts, 14 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Distortion, Overdrive, Paul Cochrane
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 37 rows
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Check before you build · 1 value the reader of this layout was not sure of
- CLR (column 2, rows C-F): LED current-limiting resistor, no value printed
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×2 | 1.5K | 1.5k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 9.1K | 9.1k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 22Ω | 22 | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 7 | ||||
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×4 | 33nF | 33n | read from the layout by eye | |
| ×3 | 1uF | 1u | film; read from the layout by eye | |
| ×2 | 100pF | 100p | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 1.5nF | 1.5n | read from the layout by eye | |
| ×3 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 9 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| D4 | 1N4148 | 1N4148 | read from the layout by eye | |
| D5 | 1N4148 | 1N4148 | read from the layout by eye | |
| D6 | 1N4148 | 1N4148 | read from the layout by eye | |
| D7 | 1N4148 | 1N4148 | read from the layout by eye | |
| D8 | 1N5817 | 1N5817 | read from the layout by eye | |
| D9 | 1N4742 | 1N4742 / 12V | Zener; read from the layout by eye | |
| ICs 3 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | RC4558 | RC4558 | read from the layout by eye | |
| IC3 | TC1044SCPA | TC1044SCPA | charge pump; read from the layout by eye | |
| Potentiometers 5 | ||||
| Gain | A500K | A500k | Potentiometer | read from the layout by eye |
| Treble | C10K | C10k | Potentiometer | read from the layout by eye |
| Bass | C25K | C25k | Potentiometer | read from the layout by eye |
| Mids | C50K | C50k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Clip | SPDT | SPDT | on/off/on toggle; read from the layout by eye | |
| Cut | DPDT | DPDT | on/off/on toggle; read from the layout by eye | |
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