Enclosure not stated · 1 knob
Chase Tone Secret PreampVerified
Based on the Chase Tone Secret Preamp· 4 other boards clone it
From the post
Per request. 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 19 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 240K at column 13 rows E-H: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×3 | 100K | 100k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 240K | 240k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 6 | ||||
| ×2 | 220uF | 220u | electrolytic; read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×2 | 22nF | 22n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| Diodes 2 | ||||
| ×5 | 1N5817 | 1N5817 | D1-D5; read from the layout by eye | |
| D6 | 1N4748A | 1N4748A / 22V | 22V Zener; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | MAX1044 | MAX1044 | legend: MAX1044, ICL7660S etc.; read from the layout by eye | |
| Potentiometers 1 | ||||
| Volume | A500K | A500k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 50K | 50k | read from the layout by eye | |
| Switches 1 | ||||
| Switch | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
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