Enclosure not stated · 3 knobs
Jon Patton's Snow Day OverdriveVerified
Based on the Jon Patton Snow Day Overdrive
From the post
Here's a cool design by Jon Patton (seriously though, everything he designs is pretty awesome). He was kind enough to share his work and offer a full circuit explanation over on DIYSB and Madbean's forum too. Check out the thread here or here for his schematic and other goodies.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 36 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 10K | 10k | read from the layout by eye | |
| ×6 | 1M | 1M | read from the layout by eye | |
| ×4 | 33K | 33k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×3 | 390Ω | 390 | read from the layout by eye | |
| ×2 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| Capacitors 12 | ||||
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 390nF | 390n | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N5817 | 1N5817 | read from the layout by eye | |
| ×1 | 12v | 12V | zener; read from the layout by eye | |
| Transistors 7 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q3 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q4 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| Q5 | 2N3904 | 2N3904 | legend: 2N3904 or similar; read from the layout by eye | |
| Q6 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| Q7 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | LT1054 | LT1054 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | B500K | B500k | Potentiometer | read from the layout by eye |
| Treble | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×3 | 10K | 10k | read from the layout by eye | |
| Switches 1 | ||||
| Hi/No/Lo | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |