Enclosure not stated · 2 knobs
Foxx / Sears Phasing Pedal
Based on the Foxx Sears Phasing Pedal
From the post
Here is a monster layout for a 70s phaser made famous by Brian May.
No many infos/videos around.
You can find the schematic in the original DIY thread here and FSB's here.
To draw a layout for this wasn't easy. To build it would be as difficult.
Double check everything is correct before starting.
There are no great quality videos but I'll add a couple just to give an idea.
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 28 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- Count of 10K (22) and 100K (15): dense board, tallied from overlapping tiles by coordinates; a miscount of one is possible
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×22 | 10K | 10k | read from the layout by eye | |
| ×15 | 100K | 100k | read from the layout by eye | |
| ×2 | 4K7 | 4.7k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 2M2 | 2.2M | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 270K | 270k | read from the layout by eye | |
| ×1 | 6K8 | 6.8k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 560R | 560 | read from the layout by eye | |
| Capacitors 8 | ||||
| ×9 | 10n | 10n | 5 film, 4 ceramic; read from the layout by eye | |
| ×2 | 220n | 220n | read from the layout by eye | |
| ×1 | 470n | 470n | read from the layout by eye | |
| ×1 | 180p | 180p | read from the layout by eye | |
| ×1 | 1u | 1u | electrolytic; read from the layout by eye | |
| ×2 | 2u2 | 2.2u | electrolytic; read from the layout by eye | |
| ×5 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×5 | 1N4148 | 1N4148 | D1-D5; read from the layout by eye | |
| Transistors 1 | ||||
| ×6 | PN4302 | PN4302 | matched JFETs (original were PN4302. Test J112 or others); read from the layout by eye | |
| ICs 1 | ||||
| ×3 | LM324 | LM324 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Depth | B1M | B1M | Potentiometer | read from the layout by eye |
| Threadle | 100K | 100k | Potentiometer | wah pot; read from the layout by eye |
| Trimmers 2 | ||||
| ×1 | 1M | 1M | Bias; read from the layout by eye | |
| ×1 | 1M | 1M | unlabelled, lower left; read from the layout by eye | |
| Switches 2 | ||||
| Mode | DPDT | DPDT | Switch 1, footswitch; read from the layout by eye | |
| Rate | DPDT | DPDT | Switch 2; read from the layout by eye | |