Enclosure not stated · 4 knobs
TWA Source Code OverdriveVerified
Based on the TWA Source Code Overdrive· 2 other boards clone it
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 32 rows
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Check before you build · 4 values the reader of this layout was not sure of
- D1-D2: legend prints 'IS1588', taken as 1S1588
- 10uF x7: only the one at lower left (rows S-U, column 2) shows a polarity stripe; the other six may be non-polarised
- IC2: legend says only 'Sanded "Magic" dual op amp', no part number
- Tone pot printed '20kW' (W taper), kept as W20K
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×2 | 20K | 20k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 180Ω | 180 | read from the layout by eye | |
| ×1 | 910Ω | 910 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| ×1 | 510K | 510k | read from the layout by eye | |
| Capacitors 8 | ||||
| ×3 | 47pF | 47p | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 330pF | 330p | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×7 | 10uF | 10u | electrolytic; six drawn without a polarity stripe; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1S1588 | 1S1588 | D1, D2; legend prints IS1588; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N5088 | 2N5088 | read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | read from the layout by eye | |
| Q3 | 2N5088 | 2N5088 | read from the layout by eye | |
| ICs 3 | ||||
| IC1 | JRC4558DD | JRC4558DD | read from the layout by eye | |
| IC2 | ? | ? | value not given; legend says Sanded "Magic" dual op amp; read from the layout by eye | |
| IC3 | TC1044SCPA | TC1044SCPA | read from the layout by eye | |
| Potentiometers 4 | ||||
| Drive | A500K | A500k | Potentiometer | read from the layout by eye |
| Tone | W20K | W20k | Potentiometer | printed 20kW; read from the layout by eye |
| Bite | B10K | B10k | Potentiometer | read from the layout by eye |
| Level | B10K | B10k | Potentiometer | read from the layout by eye |
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