1590A · 1 knob
Xotic EP BoosterVerified
Based on the Xotic EP Booster· 12 other boards clone it
From the post
Here's another circuit from Xotic. Simple JFET boost with an output buffer borrowed from the Tube Screamer. Originals have 2SP1815 transistors with BCE pinout, but I've laid this out for the more common 2N5088 with CBE pinout. The originals also have the Bright and Fat switches internally as DIP switches. Having these externally should be much easier on the user, and it shouldn't be too hard to fit in a 1590A. Well, no harder than any other 1590A layout.
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 20 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 10K | 10k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | read from the layout by eye | |
| Potentiometers 1 | ||||
| Boost | C10K | C10k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Bright | SPST | SPST | toggle; read from the layout by eye | |
| Fat | SPST | SPST | toggle; read from the layout by eye | |
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